User Guide FTB-5240S/5240BP Optical Spectrum Analyzer for FTB-500
Copyright © 2009–2010 EXFO Inc. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form, be it electronically, mechanically, or by any other means such as photocopying, recording or otherwise, without the prior written permission of EXFO Inc. (EXFO). Information provided by EXFO is believed to be accurate and reliable.
Contents Contents Certification Information ....................................................................................................... vi 1 Introducing the FTB-5240S/5240BP Optical Spectrum Analyzer ................ 1 Models ....................................................................................................................................2 Typical Applications ................................................................................................................
Contents 9 Setting Up the Instrument in EDFA Mode ...............................................209 Defining Preferences ...........................................................................................................210 Setting Up EDFA Analysis Parameters .................................................................................230 Setting Up Acquisition Parameters .....................................................................................265 10 Testing DWDM Systems .........
Contents A Technical Specifications ........................................................................... 437 B SCPI Command Reference ....................................................................... 439 Quick Reference Command Tree .........................................................................................440 Product-Specific Commands—Description ..........................................................................443 C Formulas Used with Your Optical Spectrum Analyzer ...
Certification Information Certification Information F.C.C. Information Electronic test equipment is exempt from Part 15 compliance (FCC) in the United States. However, compliance verification tests are systematically performed on most EXFO equipment. Information Electronic test equipment is subject to the EMC Directive in the European Union. The EN61326 standard prescribes both emission and immunity requirements for laboratory, measurement, and control equipment.
Certification Information DECLARATION OF CONFORMITY Application of Council Directive(s): Manufacturer’s Name: Manufacturer’s Address: Equipment Type/Environment: Trade Name/Model No.: 2006/95/EC - The Low Voltage Directive 2004/108/EC - The EMC Directive 93/68/EEC - CE Marking And their amendments EXFO Electro-Optical Engineering Inc.
1 Introducing the FTB-5240S/5240BP Optical Spectrum Analyzer The FTB-5240S/5240BP Optical Spectrum Analyzer (OSA) is designed to measure optical power as a function of wavelength or frequency and Optical Signal to Noise Ratio (OSNR). Your Optical Spectrum Analyzer offers truly portable spectral characterization for DWDM network commissioning as well as In-Band Optical Signal to Noise Ratio (OSNR) measurement for ROADM and 40 Gbit/s signals and networks.
Introducing the FTB-5240S/5240BP Optical Spectrum Analyzer Models Models The Optical Spectrum Analyzer comes in different models: 2 ³ FTB-5240S: The FTB-5240S is a small form factor expert OSA (two-slot unit). It offers new modulation schemes, such as non-return-to-zero (NRZ), duo binary, differential phase-shift keying (DPSK), quadrature phase shift keying (QPSK), which present large line widths and often display multiple peaks.
Introducing the FTB-5240S/5240BP Optical Spectrum Analyzer Typical Applications Typical Applications You can use your Optical Spectrum Analyzer for the following tasks: ³ Characterizing channels in the O- to U-band spectra ³ Testing laser sources for spectral purity and power distribution ³ Testing the transmission characteristics of optical devices ³ Troubleshooting and monitoring key parameters on CWDM or DWDM signals to check system stability ³ Characterizing all channel spacings, from 50 GHz D
Introducing the FTB-5240S/5240BP Optical Spectrum Analyzer Conventions Conventions Before using the product described in this manual, you should understand the following conventions: WARNING Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. Do not proceed unless you understand and meet the required conditions. CAUTION Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
2 Safety Information WARNING Do not install or terminate fibers while a light source is active. Never look directly into a live fiber and ensure that your eyes are protected at all times. WARNING Use of controls, adjustments and procedures for operation and maintenance other than those specified herein may result in hazardous radiation exposure or impair the protection provided by this unit. Your instrument is a Class 1 laser product in compliance with standards IEC 60825-1:2007 and 21 CFR 1040.10.
3 Getting Started with Your Optical Spectrum Analyzer Inserting and Removing Test Modules CAUTION Never insert or remove a module while the FTB-500 is turned on. This will result in immediate and irreparable damage to both the module and unit. WARNING When the laser safety LED ( ) is flashing on the FTB-500, at least one of your modules is emitting an optical signal. Please check all modules, as it might not be the one you are currently using. To insert a module into the FTB-500: 1.
Getting Started with Your Optical Spectrum Analyzer Inserting and Removing Test Modules 3. Take the module and place it so that the connector pins are at the back, as explained and shown below. Identification sticker must be facing up and connector pins at the right of the retaining screw hole. Retaining screw hole at the back Connector pins at the back FTB-500 right panel Identification sticker facing up Protruding edges at bottom 4.
Getting Started with Your Optical Spectrum Analyzer Inserting and Removing Test Modules 7. While applying slight pressure to the module, turn the retaining screw clockwise until it is tightened. This will secure the module into its “seated” position. Turn retaining screw knob clockwise FTB-500 left panel When you turn on the unit, the startup sequence will automatically detect the module.
Getting Started with Your Optical Spectrum Analyzer Inserting and Removing Test Modules To remove a module from the FTB-500: 1. Exit ToolBox and turn off your unit. 2. Position the FTB-500 so that the left panel is facing you. 3. Turn the retaining screw counterclockwise until it stops. The module will be slowly released from the slot. Turn retaining screw knob(s) counterclockwise FTB-500 left panel 4. Place the FTB-500 so that the right panel is facing you.
Getting Started with Your Optical Spectrum Analyzer Inserting and Removing Test Modules 5. Hold the module by its sides or by the handle (NOT by the connector) and pull it out.
Getting Started with Your Optical Spectrum Analyzer Starting the Optical Spectrum Analyzer Application Starting the Optical Spectrum Analyzer Application Your FTB-5240S/5240BP Optical Spectrum Analyzer module can be configured and controlled from its dedicated ToolBox application. Note: For details about ToolBox, refer to the FTB-500 user guide. To start the application: 1. From the main window, select the module to use. It will turn blue to indicate that it is highlighted. 2.
Getting Started with Your Optical Spectrum Analyzer Starting the Optical Spectrum Analyzer Application The main window (shown below) contains all the commands required to control the Optical Spectrum Analyzer: Display panes Function buttons Result panes IMPORTANT For optimal test results, you must allow a minimum warm up period of two hours for your Optical Spectrum Analyzer before starting your tests.
Getting Started with Your Optical Spectrum Analyzer Exiting the Application Status Bar The status bar, located at the bottom of the main window, identifies the current operational status of the FTB-5240S/5240BP Optical Spectrum Analyzer. Current date and time Module status Battery indicator For more information about automating or remotely controlling the FTB-5240S/5240BP Optical Spectrum Analyzer, refer to the FTB-500 user guide.
4 Preparing Your Optical Spectrum Analyzer for a Test IMPORTANT For optimal test results, you must allow a minimum warm up period of two hours for your Optical Spectrum Analyzer before starting your tests. Cleaning and Connecting Optical Fibers IMPORTANT To ensure maximum power and to avoid erroneous readings: ³ Always inspect fiber ends and make sure that they are clean as explained below before inserting them into the port.
Preparing Your Optical Spectrum Analyzer for a Test Cleaning and Connecting Optical Fibers 3. Carefully align the connector and port to prevent the fiber end from touching the outside of the port or rubbing against other surfaces. If your connector features a key, ensure that it is fully fitted into the port’s corresponding notch. 4. Push the connector in so that the fiber-optic cable is firmly in place, thus ensuring adequate contact.
Preparing Your Optical Spectrum Analyzer for a Test Installing the EXFO Universal Interface (EUI) Installing the EXFO Universal Interface (EUI) The EUI fixed baseplate is available for connectors with angled (APC) or non-angled (UPC) polishing. A green border around the baseplate indicates that it is for APC-type connectors. Green border indicates APC option Bare metal (or blue border) indicates UPC option To install an EUI connector adapter onto the EUI baseplate: 1.
Preparing Your Optical Spectrum Analyzer for a Test Selecting a Test Mode Selecting a Test Mode Your Optical Spectrum Analyzer gives you different ways to test all your DWDM systems. Your OSA provides the following test modes: 18 ³ WDM: Allows you to analyze an optical link using an OSA module. By default, WDM test mode is selected. ³ Drift: Allows you to monitor an optical link for a fixed duration using an OSA module. ³ DFB: Allows you to characterize a DFB laser source using the OSA module.
Preparing Your Optical Spectrum Analyzer for a Test Selecting a Test Mode To select a test mode: 1. From the main menu, press Mode.
Preparing Your Optical Spectrum Analyzer for a Test Selecting a Test Mode 2. Select the desired test mode. Once you select the mode, you will notice a against the selected mode and all the tabs on the main window and the main menu will change accordingly. After selecting the test mode, you must configure it.
Preparing Your Optical Spectrum Analyzer for a Test Nulling Electrical Offsets Nulling Electrical Offsets The offset nulling process provides a zero-power reference measurement, thus eliminating the effects of electronic offsets and dark current due to detectors. Temperature and humidity variations affect the performance of electronic circuits and optical detectors. For this reason, EXFO recommends performing a nulling of the electrical offsets whenever environmental conditions change.
Preparing Your Optical Spectrum Analyzer for a Test Nulling Electrical Offsets 3. Press Nulling. You are notified that the nulling is in progress in the status bar. Nulling should be completed in a few seconds. Note: The Start and Discover options are not available during the nulling process.
Preparing Your Optical Spectrum Analyzer for a Test Performing User Calibration Performing User Calibration Calibrating your module can help you achieve better results. It is particularly important when the measurement accuracy is critical or when your OSA has experienced unusual shock or vibrations. To reach the highest possible accuracy, you can perform a wavelength or power calibration.
Preparing Your Optical Spectrum Analyzer for a Test Performing User Calibration A high level sequence of steps to perform user calibration are listed below, with the detailed instructions in the following procedures. ³ Proper warm-up is required before performing user calibration. ³ If user correction factors are present in the module (indicated by a message in calibration page), ³ save a backup copy of the correction factors (optional but strongly recommended). ³ clear user correction factors.
Preparing Your Optical Spectrum Analyzer for a Test Performing User Calibration An example of the calibration file format is given below. 1310.154; 1310.167; -1.34; -1.55 1490.000; 1490.000; 1.09; 1.15 1551.334; 1551.298; -5.20; -5.45 1625.401; 1625.448; 0.00; 0.00 Note: The decimal separator is a point ( . ). This decimal separator is constant independent of what the regional settings are. To perform a user calibration: 1. From the Main Menu, press Analysis Setup.
Preparing Your Optical Spectrum Analyzer for a Test Performing User Calibration 2. Select the Calibration tab. Note: You cannot edit the power or wavelength values directly from the application. The modifications in the user calibration have to be made in a text file, and then it can be loaded in the application.
Preparing Your Optical Spectrum Analyzer for a Test Performing User Calibration 3. If a user calibration file exists, press Load Factors to load the file. 4. Select the modified user calibration file and press Open.
Preparing Your Optical Spectrum Analyzer for a Test Performing User Calibration The calibration values will replace the Correction factors list in the Analysis setup - Calibration window.
Preparing Your Optical Spectrum Analyzer for a Test Performing User Calibration 5. Press Write to Module to apply the modified calibration values to the module.
Preparing Your Optical Spectrum Analyzer for a Test Performing User Calibration 6. To verify that the calibration changes are properly applied to the module, press Load from Module. Note: OK and Cancel buttons do not have any impact on the calibration page or the correction factors inside the module.
Preparing Your Optical Spectrum Analyzer for a Test Performing User Calibration To clear user correction factors: 1. From the Main Menu, press Analysis Setup.
Preparing Your Optical Spectrum Analyzer for a Test Performing User Calibration 2. Select the Calibration tab.
Preparing Your Optical Spectrum Analyzer for a Test Performing User Calibration 3. Press Clear user correction factors, to load the factory calibration values. Note: The application will ask if you want to clear user correction factors on the module and the user calibration will be removed. Press Yes or No as required. Note: OK and Cancel buttons do not have any impact on the calibration page or the correction factors inside the module.
Preparing Your Optical Spectrum Analyzer for a Test Performing User Calibration To save a user calibration: 1. From the Main Menu, press Analysis Setup.
Preparing Your Optical Spectrum Analyzer for a Test Performing User Calibration 2. Select the Calibration tab.
Preparing Your Optical Spectrum Analyzer for a Test Performing User Calibration 3. Press Save Factors, to save the modified user calibration values.
5 Setting Up the Instrument in WDM Mode Before performing a spectral analysis in the WDM mode, you must set up your OSA module and the test application with the appropriate parameters, as explained in this chapter. Select the WDM test mode as explained in Selecting a Test Mode on page 18 before setting up the WDM test parameters.
Setting Up the Instrument in WDM Mode 38 ³ The most efficient way to setup the instrument is to use one of the favorites configurations, uploading a pre-customized acquisition and analysis setup configuration. The operator in the field only has to press the star button, select the appropriate configuration and press Start. As an example, a pre-customized configuration could be: “32 channels DWDM 50GHz”; “Toronto-Montreal CWDM” or “Vendor ABC DWDM ROADM 40Gb”.
Setting Up the Instrument in WDM Mode Defining Preferences Defining Preferences The preferences window allows you to set general information and comments on trace, set display parameters and customize the WDM results table. This information is saved with all the traces. Defining Trace Information The trace information relates to the description of the job to be done, cable and job IDs, and any relevant information about what is being tested.
Setting Up the Instrument in WDM Mode Defining Preferences 2. Select the General tab. 3. Define the general parameters as needed. 4. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Clear to clear all the changes made in the General tab.
Setting Up the Instrument in WDM Mode Defining Preferences To enter link and location information: 1. From the Main Menu, press Preferences. 2. Select the Information tab.
Setting Up the Instrument in WDM Mode Defining Preferences 3. Under System and link information, define the following parameters as needed: ³ Link ID prefix: Sets the prefix value for the link ID. You can enter any alphanumeric value. ³ Starting value: Sets the suffix increment starting value for the link ID. This value is incremented each time a new file is saved provided the Auto Increment option is selected.
Setting Up the Instrument in WDM Mode Defining Preferences To enter comments: 1. From the Main Menu, press Preferences.
Setting Up the Instrument in WDM Mode Defining Preferences 2. Select the Comments tab. 3. Enter your comments for the current trace. 4. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Clear to clear all the changes made in the Comments tab.
Setting Up the Instrument in WDM Mode Defining Preferences Defining Display Parameters The application allows you to set display settings for the acquisition trace. You can set the spectral unit for the trace and the results table. You can also select the label that should appear on the peaks of the trace. To define display parameters: 1. From the Main Menu, press Preferences.
Setting Up the Instrument in WDM Mode Defining Preferences 2. Select the Display tab.
Setting Up the Instrument in WDM Mode Defining Preferences 3. Select the spectral unit you want to work with.
Setting Up the Instrument in WDM Mode Defining Preferences 4. Select the label that will appear on the peaks in the graph.
Setting Up the Instrument in WDM Mode Defining Preferences Note: The channel name and channel number cannot be shown at the same time. If a number is displayed on the peak, it means that the channel name for that peak is not defined. If a channel name is defined for the peak, it will be displayed at the top of the peak.
Setting Up the Instrument in WDM Mode Defining Preferences 5. Select Show to display the empty channels from the channel list in the Results tab. If Hide is selected, it will not display the empty channels in the Results tab. 6. Select Show to enable horizontal markers in the Markers tab. If Hide is selected, horizontal markers will be disabled.
Setting Up the Instrument in WDM Mode Defining Preferences 7. Select the background color scheme for Graph as desired. 8. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Restore Defaults to remove all the changes and apply the default values.
Setting Up the Instrument in WDM Mode Defining Preferences Customizing WDM Results Table It is possible to select which results you would like to be displayed in the Results tab of your WDM tests. To customize the results table: 1. From the Main Menu, press Preferences.
Setting Up the Instrument in WDM Mode Defining Preferences 2. Select the WDM Results tab. 3. Select which parameters you want to display in the Results tab from the list of available choices: ³ Name: indicates the name of channel. ³ Center wavelength/frequency: indicates the spectral center-of-mass for the peak in that channel. ³ Signal Power: indicates the signal power for the selected channel (excludes noise).
Setting Up the Instrument in WDM Mode Defining Preferences 4. Press Up or Down to change the order in which the columns will appear in the Results tab. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Restore Defaults to remove all the changes and apply the default values.
Setting Up the Instrument in WDM Mode Defining Preferences Customizing WDM File Name The application shall provide a way to define the name of the next file to be saved. Defining a file autonaming format will allow you to quickly and automatically name traces in a sequential order. The customized name appears when the file is saved using the Save As option. It is possible to select which fields you want to include in the file name and the order in which it should be displayed.
Setting Up the Instrument in WDM Mode Defining Preferences 2. Select the File Name tab. 3. Select which parameters you want to include in the file name from the list of available choices: ³ Wavelength/frequency range: indicates the current wavelength/frequency acquisition range. ³ Acquisition type: indicates the current acquisition type selected. ³ Scan count: indicates the current number of scans in the acquisition tab.
Setting Up the Instrument in WDM Mode Defining Preferences 4. Press Up or Down to change the order in which the field values will appear in the file name. Based on the fields selected, a preview of the file name shall be displayed under File name preview. The field values are separated with an underscore ( _ ). 5. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Restore Defaults to remove all the changes and apply the default settings.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters Setting Up WDM Analysis Parameters This section presents the various analysis settings for the application, particularly the channel list and settings. These settings are applied on subsequent acquisitions. You can set the channel list, global thresholds, default channel thresholds, channel parameters, manage favorite configurations and perform user calibration.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters Defining General Settings The general analysis parameters for WDM acquisitions affect the calculation of the results. These calculations take place after an acquisition. If these settings are modified, they will be applied to the next acquisition. However, any modifications made in the general parameters can also be applied to the active trace for re-analysis. IMPORTANT In the General tab, you can set the default channel parameters.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 2. Select the General tab.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 3. Under Default channel settings, define the following parameters as needed: ³ Optical Spectrum Analyzer Clear the Activate default channel selection, to use the currently defined channel for analysis. This reduces the analysis time by eliminating the peak detection over the complete spectral range. The peaks outside the defined channel will not be detected or analyzed.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters ³ Channel width (GHz or nm): indicates the limit inside which the power values will be considered in the channel. For default channels, the channel width that sets the limits of the channel, should be the same as the channel distance or smaller (channel distance is defined while creating a channel list).
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters ³ Noise for OSNR: indicates which calculation method to use for OSNR value. Fixed range IEC based (IEC): The IEC method uses the interpolation of noise measured on both sides of the signal to estimate the noise level. The position at which the noise is estimated from the center wavelength is given by the OSNR distance.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters ³ Peak detection level (dBm): indicates the minimum power level from where the peak can be considered as a signal. ³ RBW for OSNR (nm): indicates the resolution bandwidth for the selected OSNR value. The resolution bandwidth of an OSA determines its ability to deal with close optical channel spacing. It is measured as the width of the response curve at half peak power (i.e.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 5. If you want to apply the above settings to the active trace, select the Apply to active trace and re-analyze option and press OK. 6. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Restore Defaults to remove all the changes and apply the default values.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters You can set your pass/fail threshold limits in different ways depending on the type of test you are performing. Threshold Limit Definition None No threshold limit is set. The results will be displayed without a Pass/Fail verdict. Min. only The threshold limit is set for a minimum value only. The Pass/Fail verdict is declared as Pass (in green), when the value is equal to or greater than the minimum threshold set.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters Defining Global Thresholds Global thresholds will be applied to the global results during the next acquisition. However, any modifications made in the global thresholds parameters can also be applied to the active trace for re-analysis. The application allows you to activate and deactivate the threshold functionality with a single control.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters To define global thresholds: 1. From the Main Menu, press Analysis Setup. 2. Select the Global Thresholds tab.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 3. Select the Activate all thresholds option, to manually set the global threshold values. If this option is not selected, all the thresholds will be deactivated, results are displayed without a Pass/Fail status and Global pass/fail status will not be active in the Global Results tab. 4.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters ³ Empty channel count: Select this option to obtain the number of empty channels from the channel list in the Global Results tab. If this option is not selected, it will not display the Pass/Fail verdict in the Results tab for the empty channels. 5. If you want to apply the above settings to the active trace, select the Apply to active trace and re-analyze option and press OK. 6.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters Defining Default Thresholds Default thresholds will be applied to any channel found outside the channel list during the next acquisition. Note: The default thresholds settings are enabled only when the Activate all thresholds option is selected in the Global Thresholds tab. For more information, see Defining Global Thresholds on page 67. To define Default Thresholds: 1. From the Main Menu, press Analysis Setup.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 2. Select the Default Thresholds tab. 3. Enter values in the boxes as explained below: ³ Wavelength/Frequency (nm/GHz): indicates the channel’s central wavelength/frequency. ³ Signal power (dBm): indicates the signal power for the selected channel (excludes noise).
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 4. If you want to apply the above settings to the active trace, select the Apply to active trace and re-analyze option and press OK. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Restore Defaults to remove all the changes and apply the default values.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters Managing Channels Testing DWDM systems involves characterizing multiple signals in a link. The application allows you to define channels using a channel editor or quickly generate them from the current data. You can also rapidly create a list of equally spaced channels. Once a channel list is created, you can modify it as needed. You can edit the analysis parameters for one channel or multiple channels.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 2. Select the Channels tab. 3. By default, the channel list is empty. Press Add Channels. 4. Enter values in the boxes as explained below: ³ Optical Spectrum Analyzer Start range (nm or THz): indicates the starting range of the channel list.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters ³ Stop range (nm or Thz): indicates the ending range of the channel list. ³ Channel center wavelength/frequency: indicates the spectral center-of-mass for the peak in that channel. Note: When using the custom channel center wavelength option, the first channel will be centered at the Start Range, and the list will be created using channel distance and channel width.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 6. If you want to apply the above settings to the active trace, select the Apply to active trace and re-analyze option. 7. Press OK to save the changes and close the window, or press Cancel to exit without saving. Note: The application displays a message if more than 1000 channels are added. You can exit the Analysis Setup window only after deleting the extra channels from the channel list.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters To edit the parameters of a specific channel: 1. From the Main Menu, press Analysis Setup.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 2. Select the Channels tab. 3. Select the channel or channels to be modified in the channel list. Selected channels have a in the first column of the channels table. If you want the changes to be applied to all of your channels, press Select All. Channels can be selected one by one or all together. You can press Unselect All to clear all channel selections. To delete the selected channels, press Delete.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 4. Press Edit Selection.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 5. Modify the settings as needed. For more information about the settings, see Adding Channels on page 74, Changing Default Channel Parameters on page 309 and Defining Default Thresholds on page 71. If you leave a box empty, it will remain as it was before your changes. Modify appropriate settings.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 6. Press OK to return to the Channels tab, which now contains the modified settings. 7. If you want to apply the above settings to the active trace, select the Apply to active trace and re-analyze option in the Channels window and press OK. 8. Press OK to save the changes and close the window, or press Cancel to exit without saving.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters To add current peaks: Note: You can add current peaks to the channel list only if an acquisition has already been performed. 1. From the Main Menu, press Analysis Setup.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 2. Select the Channels tab. 3. Press Import from Trace. All peaks from the current trace will be added to the channel list. A warning message will be displayed if any channels are overlapping. Press OK to close the warning window. Note: Changes can be applied to any channel at any time.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 4. If you want to apply the above settings to the active trace, select the Apply to active trace and re-analyze option and press OK. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters Managing Favorites Favorites are configurations files that contain all of the parameters from the Analysis Setup tab and Acquisition tab. When you often use the same settings, you can save them as a favorite, then recall them for future acquisitions. To apply a test configuration to the current acquisition: 1. From the Main Menu, press Analysis Setup. OR From the main window, press 86 .
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 2. Select the Favorites tab.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 3. To apply the settings from a favorite file to the current analysis setup, select a file from the favorites list and press Apply Selection. The apply selection button will be enabled only when a file is selected from the favorites list. When the Apply Selection button is pressed, the content of the file will be loaded in the other tabs of this page.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 4. If you want to apply the above settings to the active trace, select the Apply to active trace and re-analyze option and press OK. 5. Press OK to load the configuration and close the window, or press Cancel to exit without saving.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters To save a test configuration: 1. From the Main Menu, press Analysis Setup. OR From the main window, press 90 .
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 2. Select the Favorites tab. 3. To save an analysis setup to a file, press Save As. The default directory where the file will be saved is the favorites folder. You should use this folder unless you save the file on a USB stick.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 4. In the Save As window, enter a file name and press Save. The file will be added to the favorites list in the Analysis setup – Favorites window. 5. If you want to apply the above settings to the active trace, select the Apply to active trace and re-analyze option and press OK. 6. Press OK to load the configuration and close the window, or press Cancel to exit without saving.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters To import a test setup: 1. From the Main Menu, press Analysis Setup. OR From the main window, press Optical Spectrum Analyzer .
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 2. Select the Favorites tab. 3. Press Import to import an analysis setup from a file. 4. From the Import window, select the file you want to import and press Open. The file will be added to the favorites list in the Analysis setup – Favorites window.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 5. If you want to apply the above settings to the active trace, select the Apply to active trace and re-analyze option and press OK. 6. Press OK to load the configuration and close the window, or press Cancel to exit without saving.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters To delete a test configuration: 1. From the Main Menu, press Analysis Setup. OR From the main window, press 96 .
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 2. Select the Favorites tab.
Setting Up the Instrument in WDM Mode Setting Up WDM Analysis Parameters 3. To delete a configuration file from the favorites list, select a file from the favorites list and press Delete. Press Yes to delete the file, else press No.
Setting Up the Instrument in WDM Mode Setting Up Acquisition Parameters Setting Up Acquisition Parameters Before performing your test, you must set the acquisition type and parameters. There are four types of acquisitions in WDM mode: Single, Averaging, Real-Time and In-Band. ³ Single: Spectral measurement is performed once. The results are displayed according to this measurement. In single mode, noise measurement can be performed In-Band if the option is available.
Setting Up the Instrument in WDM Mode Setting Up Acquisition Parameters To set parameters in the Acquisition tab: 1. From the main window, select the Acquisition tab. 2. Select the acquisition type. ³ If you are performing a Single or Real-Time acquisition, you cannot modify the number of scans count value.
Setting Up the Instrument in WDM Mode Setting Up Acquisition Parameters ³ If you are performing an Averaging or In-Band type acquisition, enter the number of scans the unit will perform. 3. Select the wavelength range for your acquisition. You can select the wavelength range by entering the start and stop values or by selecting a range on the double slider. To select the wavelength range using the double slider, move the left and right handles on the double slider or simply click on any band.
6 Setting Up the Instrument in Drift Mode Before performing a spectral analysis in the Drift mode, you must set up your OSA module and the test application with the appropriate parameters, as explained in this chapter. Select the Drift test mode as explained in Selecting a Test Mode on page 18 before setting up the Drift test parameters.
Setting Up the Instrument in Drift Mode 104 ³ The easiest way to set up the instrument, especially when the operator does not know in advance what to expect at the input of the OSA is to use the Discover button. After Discover button has been pressed, a measurement and analysis will be performed according to the best setup determined by the instrument and this setup will be used for the next scan. This is explained in Using the Discover Feature on page 269.
Setting Up the Instrument in Drift Mode Defining Preferences Defining Preferences The preferences window allows you to set general information and comments on trace, set display parameters and customize the drift results table. This information is saved with all the traces. Defining Trace Information The trace information relates to the description of the job to be done, cable and job IDs, and any relevant information about what is being tested.
Setting Up the Instrument in Drift Mode Defining Preferences 2. Select the General tab. 3. Define the general parameters as needed. 4. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Clear to clear all the changes made in the General tab.
Setting Up the Instrument in Drift Mode Defining Preferences To enter link and location information: 1. From the Main Menu, press Preferences. 2. Select the Information tab.
Setting Up the Instrument in Drift Mode Defining Preferences 3. Under System and link information, define the following parameters as needed: ³ Link ID prefix: Sets the prefix value for the link ID. You can enter any alphanumeric value. ³ Starting value: Sets the suffix increment starting value for the link ID. This value is incremented each time a new file is saved provided the Auto Increment option is selected.
Setting Up the Instrument in Drift Mode Defining Preferences To enter comments: 1. From the Main Menu, press Preferences.
Setting Up the Instrument in Drift Mode Defining Preferences 2. Select the Comments tab. 3. Enter your comments for the current trace. 4. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Clear to clear all the changes made in the Comments tab.
Setting Up the Instrument in Drift Mode Defining Preferences Defining Display Parameters The application allows you to set display settings for the acquisition trace. You can set the spectral unit for the trace and the results table. You can also select the label that should appear on the peaks of the trace. To define display parameters: 1. From the Main Menu, press Preferences.
Setting Up the Instrument in Drift Mode Defining Preferences 2. Select the Display tab.
Setting Up the Instrument in Drift Mode Defining Preferences 3. Select the spectral unit you want to work with.
Setting Up the Instrument in Drift Mode Defining Preferences 4. Select the label that will appear on the peaks in the graph.
Setting Up the Instrument in Drift Mode Defining Preferences Note: The channel name and channel number cannot be shown at the same time. If a number is displayed on the peak, it means that the channel name for that peak is not defined. If a channel name is defined for the peak, it will be displayed at the top of the peak.
Setting Up the Instrument in Drift Mode Defining Preferences 5. Select Show to enable horizontal markers in the Markers tab. If Hide is selected, horizontal markers will be disabled.
Setting Up the Instrument in Drift Mode Defining Preferences 6. Select the background color scheme for Graph as desired. 7. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Restore Defaults to remove all the changes and apply the default values.
Setting Up the Instrument in Drift Mode Defining Preferences Customizing Drift Results Table It is possible to select which results you would like to be displayed in the Results tab of your Drift tests. To customize the results table: 1. From the Main Menu, press Preferences.
Setting Up the Instrument in Drift Mode Defining Preferences 2. Select the Drift Results tab. 3. Select which parameters you want to display in the Channel Graph tab from the list of available choices: ³ Center wavelength/frequency: indicates the spectral center-of-mass for the peak in that channel. ³ Signal Power: indicates the signal power for the selected channel (excludes noise).
Setting Up the Instrument in Drift Mode Defining Preferences Customizing Drift File Name The application shall provide a way to define the name of the next file to be saved. Defining a file autonaming format will allow you to quickly and automatically name traces in a sequential order. The customized name appears when the file is saved using the Save As option. It is possible to select which fields you want to include in the file name and the order in which it should be displayed.
Setting Up the Instrument in Drift Mode Defining Preferences 2. Select the File Name tab. 3. Select which parameters you want to include in the file name from the list of available choices: ³ Wavelength/frequency range: indicates the current wavelength/frequency acquisition range. ³ Acquisition type: indicates the current acquisition type selected. ³ Scan count: indicates the current number of scans in the acquisition tab.
Setting Up the Instrument in Drift Mode Defining Preferences 4. Press Up or Down to change the order in which the field values will appear in the file name. Based on the fields selected, a preview of the file name shall be displayed under File name preview. The field values are separated with an underscore ( _ ). 5. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Restore Defaults to remove all the changes and apply the default settings.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters Setting Up Drift Analysis Parameters This section presents the various analysis settings for the application, particularly the channel list and settings. These settings are applied on subsequent acquisitions. You can set the channel list, global thresholds, default channel thresholds, channel parameters, manage favorite configurations and perform user calibration.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters Defining General Settings The general analysis parameters for drift acquisitions affect the calculation of the results. These calculations take place after an acquisition. If these settings are modified, they will be applied to the next acquisition. IMPORTANT In the General tab, you can set the default channel parameters.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 2. Select the General tab.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 3. Under Default channel settings, define the following parameters as needed: ³ Clear the Activate default channel selection, to use the currently defined channel for analysis. This reduces the analysis time by eliminating the peak detection over the complete spectral range. The peaks outside the defined channel will not be detected or analyzed.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters and be considered as one multi-peak signal. With this result, you can use markers to find the spacing between adjacent channels or to find the channel width. ³ OSNR distance (GHz or nm): OSNR distance is automatically set at the channel edge, that is, at half of the channel width from the center wavelength. ³ Signal power calculation: indicates which calculation method to apply for signal power value.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters ³ Noise for OSNR: indicates which calculation method to use for OSNR value. Fixed range IEC based (IEC): The IEC method uses the interpolation of noise measured on both sides of the signal to estimate the noise level. The position at which the noise is estimated from the center wavelength is given by the OSNR distance.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters ³ Peak detection level (dBm): indicates the minimum power level from where the peak can be considered as a signal. ³ RBW for OSNR (nm): indicates the resolution bandwidth for the selected OSNR value. The resolution bandwidth of an OSA determines its ability to deal with close optical channel spacing. It is measured as the width of the response curve at half peak power (i.e.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters ³ Power offset (dB): indicates the offset value applied on the power. You can use an offset to adjust your unit. This does not replace a calibration performed at EXFO, but it can help you achieve the specifications if you have determined that, for example, your modules are used beyond the normal allowed use. The power offset appears in the graph, on the left, above the arrow.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters You can set your pass/fail threshold limits in different ways depending on the type of test you are performing. Threshold Limit Definition None No threshold limit is set. The results will be displayed without a Pass/Fail verdict. Min only The threshold limit is set for a minimum value only. The Pass/Fail verdict is declared as Pass (in green), when the value is equal to or greater than the minimum threshold set.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters Defining Channel Thresholds The thresholds will be applied to any channel found outside the channel list during the next acquisition. Thresholds will be applied to the channel results during the next acquisition. The application allows you to activate and deactivate the threshold functionality with a single control. When thresholds are globally enabled, the results are displayed with the Pass/Fail status based on various settings.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters When thresholds are globally disabled, the results in the Channel Results tab are also displayed without a Pass/Fail status. To define channel results thresholds: 1. From the Main Menu, press Analysis Setup.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 2. Select the Thresholds tab.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 3. Select the Activate all thresholds option, to manually set the channel threshold values. If this option is not selected, all the thresholds will be deactivated, results are displayed without a Pass/Fail status in the Channel Graph, Channel History and Channel Results tabs.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 4. Enter values in the boxes as explained below: ³ Wavelength/Frequency (nm/GHz): indicates the channel’s central wavelength/frequency. ³ Signal power (dBm): indicates the signal power for the selected channel (excludes noise). ³ OSNR (dB): is the Optical Signal to Noise Ratio, given by Signal power (according to the current calculation method, in dBm) minus Noise (according to the current calculation method, in dBm). 5.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters Managing Channels Testing DWDM systems involves characterizing multiple signals in a link. The application allows you to define channels using a channel editor or quickly generate them from the current data. You can also rapidly create a list of equally spaced channels. Once a channel list is created, you can modify it as needed. You can edit the analysis parameters for one channel or multiple channels.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 2. Select the Channels tab. 3. By default, the channel list is empty. Press Add Channels. 4. Enter values in the boxes as explained below: ³ Start range (nm or THz): indicates the starting range of the channel list.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters ³ Stop range (nm or Thz): indicates the ending range of the channel list. ³ Channel center wavelength/frequency: indicates the spectral center-of-mass for the peak in that channel. Note: When using the custom channel center wavelength option, the first channel will be centered at the Start Range, and the list will be created using channel distance and channel width.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 5. Press OK to return to the Channels window, which now lists the added channels. Note: When new channels are added, the Use Default thresholds will be applied to the channel parameters. Note: A warning message will be displayed if any channels are overlapping, but the analysis can still be performed on overlapping channels.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters To edit the parameters of a specific channel: 1. From the Main Menu, press Analysis Setup.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 2. Select the Channels tab.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 3. Select the channel or channels to be modified in the channel list. Selected channels have a in the first column of the channels table. If you want the changes to be applied to all of your channels, press Select All. Channels can be selected one by one or all together. You can press Unselect All to clear all channel selections. To delete the selected channels, press Delete. 4. Press Edit Selection.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 5. Modify the settings as needed. For more information about the settings, see Adding Channels on page 137, Changing Default Channel Parameters on page 309 and Defining Channel Thresholds on page 132. If you leave a box empty, it will remain as it was before your changes. Modify appropriate settings. 6. Press OK to return to the Channels tab, which now contains the modified settings. 7.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters To add current peaks: Note: You can add current peaks to the channel list only if an acquisition has already been performed. 1. From the Main Menu, press Analysis Setup.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 2. Select the Channels tab. 3. Press Import from Trace. All peaks from the current trace will be added to the channel list. A warning message will be displayed if any channels are overlapping. Press OK to close the warning window. Note: Changes can be applied to any channel at any time.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters Managing Favorites Favorites are configurations files that contain all of the parameters from the Analysis Setup tab and Acquisition tab. When you often use the same settings, you can save them as a favorite, then recall them for future acquisitions. To apply a test configuration to the current acquisition: 1. From the Main Menu, press Analysis Setup. OR From the main window, press Optical Spectrum Analyzer .
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 2. Select the Favorites tab.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 3. To apply the settings from a favorite file to the current analysis setup, select a file from the favorites list and press Apply Selection. The apply selection button will be enabled only when a file is selected from the favorites list. When the Apply Selection button is pressed, the content of the file will be loaded in the other tabs of this page.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters To save a test configuration: 1. From the Main Menu, press Analysis Setup. OR From the main window, press 150 .
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 2. Select the Favorites tab.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 3. To save an analysis setup to a file, press Save As. The default directory where the file will be saved is the favorites folder. You should use this folder unless you save the file on a USB stick.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 4. In the Save As window, enter a file name and press Save. The file will be added to the favorites list in the Analysis setup – Favorites window. 5. Press OK to load the configuration and close the window, or press Cancel to exit without saving.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters To import a test setup: 1. From the Main Menu, press Analysis Setup. OR From the main window, press 154 .
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 2. Select the Favorites tab. 3. Press Import to import an analysis setup from a file. 4. From the Import window, select the file you want to import and press Open. The file will be added to the favorites list in the Analysis setup – Favorites window.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 5. Press OK to load the configuration and close the window, or press Cancel to exit without saving. To delete a test configuration: 1. From the Main Menu, press Analysis Setup. OR From the main window, press 156 .
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 2. Select the Favorites tab.
Setting Up the Instrument in Drift Mode Setting Up Drift Analysis Parameters 3. To delete a configuration file from the favorites list, select a file from the favorites list and press Delete. Press Yes to delete the file, else press No.
Setting Up the Instrument in Drift Mode Setting Up Acquisition Parameters Setting Up Acquisition Parameters Before performing your test, you must set the acquisition type and parameters from the Acquisition tab and other parameters from the Drift Settings tab. There are three types of acquisitions in Drift mode: Single, Averaging and In-Band. ³ Single: Spectral measurement is performed once. The results are displayed according to this measurement.
Setting Up the Instrument in Drift Mode Setting Up Acquisition Parameters To set parameters in the Acquisition tab: 1. From the main window, select the Acquisition tab. 2. Press Trial Scan to perform a trial acquisition. When a trial acquisition is running in the module, the Start button is disabled. You are notified that the acquisition is in progress in the status bar. The trial scan is performed using the analysis setup parameters.
Setting Up the Instrument in Drift Mode Setting Up Acquisition Parameters 3. Select the acquisition type. ³ If you are performing a Single acquisition, you cannot modify the number of scans count value. ³ If you are performing an Averaging or In-Band type acquisition, enter the number of scans the unit will perform. 4. Select the wavelength range for your acquisition. You can select the wavelength range by entering the start and stop values or by selecting a range on the double slider.
Setting Up the Instrument in Drift Mode Setting Up Acquisition Parameters The wavelength range covered within these bands of the spectra are listed below. ³ O band (original): 1259 to 1361 nm ³ E band (extended): 1359 to 1461 nm ³ S band (short wavelengths): 1459 to 1531 nm ³ C band (conventional “erbium window”): 1529 to 1566 nm ³ L band (long wavelengths): 1564 to 1626 nm ³ U band (ultralong wavelengths): 1624 to 1650 nm. To set parameters in the Drift Settings tab: 1.
Setting Up the Instrument in Drift Mode Setting Up Acquisition Parameters 3. Select a sampling unit and enter a sampling count to configure a time that should be elapsed between the start of each acquisition during a drift measurement. 4. Select a duration unit and enter a duration count to configure the total duration of a drift measurement. 5. Enter a drift file name that should be used to save a drift file. 6. Select a location where the drift file should be saved.
Setting Up the Instrument in Drift Mode Setting Up Acquisition Parameters 7. Select the Keep historical traces in subfolder option to allow the storage of current acquisition in a separate *.osawdm file, when a significant event occurs during the drift measurement. A significant event is when ³ a value from a given channel has crossed its threshold (going from pass to fail). ³ there is no signal power in a given channel.
7 Setting Up the Instrument in DFB Mode Before performing a spectral analysis in the DFB mode, you must set up your OSA module and the test application with the appropriate parameters, as explained in this chapter. Select the DFB test mode as explained in Selecting a Test Mode on page 18 before setting up the DFB test parameters.
Setting Up the Instrument in DFB Mode Defining Preferences Defining Preferences The preferences window allows you to set general information and comments on trace, set display parameters and customize the WDM results table. This information is saved with all the traces. Defining Trace Information The trace information relates to the description of the job to be done, cable and job IDs, and any relevant information about what is being tested.
Setting Up the Instrument in DFB Mode Defining Preferences 2. Select the General tab. 3. Define the general parameters as needed. 4. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Clear to clear all the changes made in the General tab.
Setting Up the Instrument in DFB Mode Defining Preferences To enter link and location information: 1. From the Main Menu, press Preferences. 2. Select the Information tab.
Setting Up the Instrument in DFB Mode Defining Preferences 3. Under System and link information, define the following parameters as needed: ³ Link ID prefix: Sets the prefix value for the link ID. You can enter any alphanumeric value. ³ Starting value: Sets the suffix increment starting value for the link ID. This value is incremented each time a new file is saved provided the Auto Increment option is selected.
Setting Up the Instrument in DFB Mode Defining Preferences To enter comments: 1. From the Main Menu, press Preferences.
Setting Up the Instrument in DFB Mode Defining Preferences 2. Select the Comments tab. 3. Enter your comments for the current trace. 4. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Clear to clear all the changes made in the Comments tab.
Setting Up the Instrument in DFB Mode Defining Preferences Defining Display Parameters The application allows you to set display settings for the acquisition trace. You can set the spectral unit for the trace and the results table. You can also select the label that should appear on the peaks of the trace. To define display parameters: 1. From the Main Menu, press Preferences.
Setting Up the Instrument in DFB Mode Defining Preferences 2. Select the Display tab.
Setting Up the Instrument in DFB Mode Defining Preferences 3. Select the spectral unit you want to work with.
Setting Up the Instrument in DFB Mode Defining Preferences 4. Select the background color scheme for Graph as desired. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Restore Defaults to remove all the changes and apply the default values.
Setting Up the Instrument in DFB Mode Defining Preferences Customizing DFB File Name The application shall provide a way to define the name of the next file to be saved. Defining a file autonaming format will allow you to quickly and automatically name traces in a sequential order. The customized name appears when the file is saved using the Save As option. It is possible to select which fields you want to include in the file name and the order in which it should be displayed.
Setting Up the Instrument in DFB Mode Defining Preferences 2. Select the File Name tab. 3. Select which parameters you want to include in the file name from the list of available choices: ³ Wavelength/frequency range: indicates the current wavelength/frequency acquisition range. ³ Acquisition type: indicates the current acquisition type selected. ³ Scan count: indicates the current number of scans in the acquisition tab.
Setting Up the Instrument in DFB Mode Defining Preferences 4. Press Up or Down to change the order in which the field values will appear in the file name. Based on the fields selected, a preview of the file name shall be displayed under File name preview. The field values are separated with an underscore ( _ ). 5. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Restore Defaults to remove all the changes and apply the default settings.
Setting Up the Instrument in DFB Mode Setting Up Acquisition Parameters Setting Up Acquisition Parameters Before performing your test, you must set the acquisition type and parameters. There are three types of acquisitions in DFB mode: Single, Averaging and Real-Time. ³ Single: Spectral measurement is performed once. The results are displayed according to this measurement. In single mode, noise measurement can be performed In-Band if the option is available.
Setting Up the Instrument in DFB Mode Setting Up Acquisition Parameters To set parameters in the Acquisition tab: 1. From the main window, select the Acquisition tab. 2. Select the acquisition type. ³ If you are performing a Single or Real-Time acquisition, you cannot modify the number of scans count value.
Setting Up the Instrument in DFB Mode Setting Up Acquisition Parameters ³ If you are performing an Averaging type acquisition, enter the number of scans the unit will perform. 3. Select the wavelength range for your acquisition. You can select the wavelength range by entering the start and stop values or by selecting a range on the double slider. To select the wavelength range using the double slider, move the left and right handles on the double slider or simply click on any band.
8 Setting Up the Instrument in Spectral Transmittance Mode Before performing a spectral analysis in the Spectral Transmittance mode, you must set up your OSA module and the test application with the appropriate parameters, as explained in this chapter. Select the Spectral Transmittance test mode as explained in Selecting a Test Mode on page 18 before setting up the test parameters.
Setting Up the Instrument in Spectral Transmittance Mode Defining Preferences Defining Preferences The preferences window allows you to set general information and comments on trace, set display parameters and customize the Spectral Transmittance results table. This information is saved with all the traces. Defining Trace Information The trace information relates to the description of the job to be done, cable and job IDs, and any relevant information about what is being tested.
Setting Up the Instrument in Spectral Transmittance Mode Defining Preferences 2. Select the General tab. 3. Define the general parameters as needed. 4. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Clear to clear all the changes made in the General tab.
Setting Up the Instrument in Spectral Transmittance Mode Defining Preferences To enter link and location information: 1. From the Main Menu, press Preferences. 2. Select the Information tab.
Setting Up the Instrument in Spectral Transmittance Mode Defining Preferences 3. Under System and link information, define the following parameters as needed: ³ Link ID prefix: Sets the prefix value for the link ID. You can enter any alphanumeric value. ³ Starting value: Sets the suffix increment starting value for the link ID. This value is incremented each time a new file is saved provided the Auto Increment option is selected.
Setting Up the Instrument in Spectral Transmittance Mode Defining Preferences To enter comments: 1. From the Main Menu, press Preferences.
Setting Up the Instrument in Spectral Transmittance Mode Defining Preferences 2. Select the Comments tab. 3. Enter your comments for the current trace. 4. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Clear to clear all the changes made in the Comments tab.
Setting Up the Instrument in Spectral Transmittance Mode Defining Preferences Defining Display Parameters The application allows you to set display settings for the acquisition trace. You can set the spectral unit for the trace and the results table. You can also select the label that should appear on the peaks of the trace. To define display parameters: 1. From the Main Menu, press Preferences.
Setting Up the Instrument in Spectral Transmittance Mode Defining Preferences 2. Select the Display tab.
Setting Up the Instrument in Spectral Transmittance Mode Defining Preferences 3. Select the spectral unit you want to work with.
Setting Up the Instrument in Spectral Transmittance Mode Defining Preferences 4. Select Show to enable horizontal markers in the Markers tab. If Hide is selected, horizontal markers will be disabled.
Setting Up the Instrument in Spectral Transmittance Mode Defining Preferences 5. Select the background color scheme for Graph as desired. 6. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Restore Defaults to remove all the changes and apply the default values.
Setting Up the Instrument in Spectral Transmittance Mode Defining Preferences Customizing Spectral Transmittance File Name The application shall provide a way to define the name of the next file to be saved. Defining a file autonaming format will allow you to quickly and automatically name traces in a sequential order. The customized name appears when the file is saved using the Save As option.
Setting Up the Instrument in Spectral Transmittance Mode Defining Preferences 2. Select the File Name tab. 3. Select which parameters you want to include in the file name from the list of available choices: ³ Wavelength/frequency range: indicates the current wavelength/frequency acquisition range. ³ Acquisition type: indicates the current acquisition type selected. ³ Scan count: indicates the current number of scans in the acquisition tab.
Setting Up the Instrument in Spectral Transmittance Mode Defining Preferences 4. Press Up or Down to change the order in which the field values will appear in the file name. Based on the fields selected, a preview of the file name shall be displayed under File name preview. The field values are separated with an underscore ( _ ). 5. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Restore Defaults to remove all the changes and apply the default settings.
Setting Up the Instrument in Spectral Transmittance Mode Setting Up Spectral Transmittance Analysis Parameters Setting Up Spectral Transmittance Analysis Parameters This section presents the various analysis settings for the application, particularly the channel list and settings. These settings are applied on subsequent acquisitions. Note: The analysis setup parameters will be applied to the ST results, upon the next acquisition.
Setting Up the Instrument in Spectral Transmittance Mode Setting Up Spectral Transmittance Analysis Parameters Defining ST Analysis Settings The global analysis parameters for spectral transmittance acquisitions affect the calculation of the results. These calculations take place after an acquisition. If these settings are modified, they will be applied to the next acquisition. However, any modifications made in the general parameters can also be applied to the active trace for re-analysis.
Setting Up the Instrument in Spectral Transmittance Mode Setting Up Spectral Transmittance Analysis Parameters 2. Select the ST Analysis tab.
Setting Up the Instrument in Spectral Transmittance Mode Setting Up Spectral Transmittance Analysis Parameters 3. Under Global analysis parameters, define the following parameters as needed: ³ Channel definition (GHz): indicates the limit inside which the power values will be considered in the channel. Centred on max peak: Channel is centered on the lowest insertion loss peak. ITU Grid: Select the nearest ITU channel from the peak with lowest insertion loss.
Setting Up the Instrument in Spectral Transmittance Mode Setting Up Spectral Transmittance Analysis Parameters ³ Channel distance (GHz or nm): indicates distance between the channels. The value of channel distance will be set depending on the selection made for the channel definition option. The channel distance box will be enabled only when the channel center wavelength option is set to custom.
Setting Up the Instrument in Spectral Transmittance Mode Setting Up Spectral Transmittance Analysis Parameters To edit the power offset value in percentage, press Edit % button. The percentage value entered in Edit percentage will be converted to a corresponding equivalent value in dB. ³ Output wavelength offset (nm): indicates the offset value applied on the output wavelength. You can use an offset to adjust your unit.
Setting Up the Instrument in Spectral Transmittance Mode Setting Up Spectral Transmittance Analysis Parameters 4. If you want to apply the above settings to the active trace, select the Apply to current measurement and re-analyze option and press OK. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Restore Defaults to remove all the changes and apply the default values.
Setting Up the Instrument in Spectral Transmittance Mode Setting Up Acquisition Parameters Setting Up Acquisition Parameters Before performing your test, you must set the acquisition type and parameters. There are three types of acquisitions in Spectral Transmittance mode: Single, Averaging and Real-Time. ³ Single: Spectral measurement is performed once. The results are displayed according to this measurement. In single mode, noise measurement can be performed In-Band if the option is available.
Setting Up the Instrument in Spectral Transmittance Mode Setting Up Acquisition Parameters To set parameters in the Acquisition tab: 1. From the main window, select the Acquisition tab. 2. Select the acquisition type. ³ If you are performing a Single or Real-Time acquisition, you cannot modify the number of scans count value.
Setting Up the Instrument in Spectral Transmittance Mode Setting Up Acquisition Parameters ³ If you are performing an Averaging type acquisition, enter the number of scans the unit will perform. 3. Press Input or Output to specify which position to use to store the next acquisition. 4. Select the wavelength range for your acquisition. You can select the wavelength range by entering the start and stop values or by selecting a range on the double slider.
Setting Up the Instrument in Spectral Transmittance Mode Setting Up Acquisition Parameters The wavelength range covered within these bands of the spectra are listed below. 208 ³ O band (original): 1259 to 1361 nm ³ E band (extended): 1359 to 1461 nm ³ S band (short wavelengths): 1459 to 1531 nm ³ C band (conventional “erbium window”): 1529 to 1566 nm ³ L band (long wavelengths): 1564 to 1626 nm ³ U band (ultralong wavelengths): 1624 to 1650 nm.
9 Setting Up the Instrument in EDFA Mode Before performing a spectral analysis in the EDFA mode, you must set up your OSA module and the test application with the appropriate parameters, as explained in this chapter. Select the EDFA test mode as explained in Selecting a Test Mode on page 18 before setting up the EDFA test parameters.
Setting Up the Instrument in EDFA Mode Defining Preferences Defining Preferences The preferences window allows you to set general information and comments on trace, set display parameters and customize the EDFA results table. This information is saved with all the traces. Defining Trace Information The trace information relates to the description of the job to be done, cable and job IDs, and any relevant information about what is being tested.
Setting Up the Instrument in EDFA Mode Defining Preferences 2. Select the General tab. 3. Define the general parameters as needed. 4. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Clear to clear all the changes made in the General tab.
Setting Up the Instrument in EDFA Mode Defining Preferences To enter link and location information: 1. From the Main Menu, press Preferences.
Setting Up the Instrument in EDFA Mode Defining Preferences 2. Select the Information tab. 3. Under System and link information, define the following parameters as needed: ³ Link ID prefix: Sets the prefix value for the link ID. You can enter any alphanumeric value. ³ Starting value: Sets the suffix increment starting value for the link ID. This value is incremented each time a new file is saved provided the Auto Increment option is selected.
Setting Up the Instrument in EDFA Mode Defining Preferences 4. Under Location Information, define the following parameters as needed: ³ Network element: Sets the type of network element. ³ Test point: Sets the test point. ³ Description: Enter the description of location if required. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Restore Defaults to remove all the changes and apply the default values. To enter comments: 1.
Setting Up the Instrument in EDFA Mode Defining Preferences 2. Select the Comments tab. 3. Enter your comments for the current trace. 4. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Clear to clear all the changes made in the Comments tab.
Setting Up the Instrument in EDFA Mode Defining Preferences Defining Display Parameters The application allows you to set display settings for the acquisition trace. You can set the spectral unit for the trace and the results table. You can also select the label that should appear on the peaks of the trace. To define display parameters: 1. From the Main Menu, press Preferences.
Setting Up the Instrument in EDFA Mode Defining Preferences 2. Select the Display tab.
Setting Up the Instrument in EDFA Mode Defining Preferences 3. Select the spectral unit you want to work with.
Setting Up the Instrument in EDFA Mode Defining Preferences 4. Select the label that will appear on the peaks in the graph.
Setting Up the Instrument in EDFA Mode Defining Preferences Note: The channel name and channel number cannot be shown at the same time. If a number is displayed on the peak, it means that the channel name for that peak is not defined. If a channel name is defined for the peak, it will be displayed at the top of the peak.
Setting Up the Instrument in EDFA Mode Defining Preferences 5. Select Show to display the empty channels from the channel list in the Results tab. If Hide is selected, it will not display the empty channels in the Results tab.
Setting Up the Instrument in EDFA Mode Defining Preferences 6. Select Show to enable horizontal markers in the Markers tab. If Hide is selected, horizontal markers will be disabled.
Setting Up the Instrument in EDFA Mode Defining Preferences 7. Select the background color scheme for Graph as desired. 8. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Restore Defaults to remove all the changes and apply the default values.
Setting Up the Instrument in EDFA Mode Defining Preferences Customizing EDFA Results Table It is possible to select which results you would like to be displayed in the Results tab of your EDFA tests. To customize the results table: 1. From the Main Menu, press Preferences.
Setting Up the Instrument in EDFA Mode Defining Preferences 2. Select the EDFA Results tab. 3. Select which parameters you want to display in the Results tab from the list of available choices: ³ Name: indicates the name of channel. ³ Center wavelength/frequency: indicates the spectral center-of-mass for the peak in that channel. ³ Input Signal Power: indicates the signal power for the selected channel (excludes noise).
Setting Up the Instrument in EDFA Mode Defining Preferences ³ Gain: indicates the gain (Output Signal Power - Input Signal Power) for the selected channel. ³ Noise Figure: indicates the EDFA’s noise figure measured for the selected channel. ³ Gain - Avg. Gain: indicates the selected channel gain minus the average of all channel gains. 4. Press Up or Down to change the order in which the columns will appear in the Results tab. 5.
Setting Up the Instrument in EDFA Mode Defining Preferences Customizing EDFA File Name The application shall provide a way to define the name of the next file to be saved. Defining a file autonaming format will allow you to quickly and automatically name traces in a sequential order. The customized name appears when the file is saved using the Save As option. It is possible to select which fields you want to include in the file name and the order in which it should be displayed.
Setting Up the Instrument in EDFA Mode Defining Preferences 2. Select the File Name tab. 3. Select which parameters you want to include in the file name from the list of available choices: ³ Wavelength/frequency range: indicates the current wavelength/frequency acquisition range. ³ Acquisition type: indicates the current acquisition type selected. ³ Scan count: indicates the current number of scans in the acquisition tab.
Setting Up the Instrument in EDFA Mode Defining Preferences 4. Press Up or Down to change the order in which the field values will appear in the file name. Based on the fields selected, a preview of the file name shall be displayed under File name preview. The field values are separated with an underscore ( _ ). 5. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Restore Defaults to remove all the changes and apply the default settings.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters Setting Up EDFA Analysis Parameters This section presents the various analysis settings for the application, particularly the channel list and settings. These settings are applied on subsequent acquisitions. You can set the channel list, channel parameters, manage favorite configurations and perform user calibration.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters Defining General Settings The general analysis parameters for EDFA acquisitions affect the calculation of the results. These calculations take place after an acquisition. If these settings are modified, they will be applied to the next acquisition. IMPORTANT In the General tab, you can set the default channel parameters.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 2. Select the General tab.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 3. Under Default channel settings, define the following parameters as needed: ³ Optical Spectrum Analyzer Clear the Activate default channel selection, to use the currently defined channel for analysis. This reduces the analysis time by eliminating the peak detection over the complete spectral range. The peaks outside the defined channel will not be detected or analyzed.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters ³ Channel width (GHz or nm): indicates the limit inside which the power values will be considered in the channel. For default channels, the channel width that sets the limits of the channel, should be the same as the channel distance or smaller (channel distance is defined while creating a channel list).
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters ³ Peak detection level (dBm): indicates the minimum power level from where the peak can be considered as a signal. ³ RBW for OSNR (nm): indicates the resolution bandwidth for the selected OSNR value. The resolution bandwidth of an OSA determines its ability to deal with close optical channel spacing. It is measured as the width of the response curve at half peak power (i.e.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters ³ Output wavelength offset (nm): indicates the offset value applied on the output wavelength. You can use an offset to adjust your unit. This does not replace a calibration performed at EXFO, but it can help you achieve the specifications if you have determined that, for example, your modules are used beyond the normal allowed. Entering a value in THz is not possible.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 5. If you want to apply the above settings to the active trace, select the Apply to current measurement and re-analyze option and press OK. 6. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Restore Defaults to remove all the changes and apply the default values.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters Managing Channels Testing DWDM systems involves characterizing multiple signals in a link. The application allows you to define channels using a channel editor or quickly generate them from the current data. You can also rapidly create a list of equally spaced channels. Once a channel list is created, you can modify it as needed. You can edit the analysis parameters for one channel or multiple channels.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 2. Select the Channels tab. 3. By default, the channel list is empty. Press Add Channels.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 4. Enter values in the boxes as explained below: ³ Start range (nm or THz): indicates the starting range of the channel list. ³ Stop range (nm or Thz): indicates the ending range of the channel list. ³ Channel center wavelength/frequency: indicates the spectral center-of-mass for the peak in that channel.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters ³ Starting Value: Sets the increment starting value for the channel name in the channel list. ³ Increment value: Sets the increment value for the channel name in the channel list. 5. Press OK to return to the Channels window, which now lists the added channels. Note: When new channels are added, the Use Default thresholds will be applied to the channel parameters.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 7. Press OK to save the changes and close the window, or press Cancel to exit without saving. Note: The application displays a message if more than 1000 channels are added. You can exit the Analysis Setup window only after deleting the extra channels from the channel list. You can delete the channels manually as required. To edit the parameters of a specific channel: 1. From the Main Menu, press Analysis Setup.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 2. Select the Channels tab.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 3. Select the channel or channels to be modified in the channel list. Selected channels have a in the first column of the channels table. If you want the changes to be applied to all of your channels, press Select All. Channels can be selected one by one or all together. You can press Unselect All to clear all channel selections. To delete the selected channels, press Delete. 4. Press Edit Selection.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 5. Modify the settings as needed. For more information about the settings, see Adding Channels on page 238. If you leave a box empty, it will remain as it was before your changes. Modify appropriate settings. 6. Press OK to return to the Channels tab, which now contains the modified settings.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 7. If you want to apply the above settings to the active trace, select the Apply to current measurement and re-analyze option in the Channels window and press OK. 8. Press OK to save the changes and close the window, or press Cancel to exit without saving.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters To add current peaks: Note: You can add current peaks to the channel list only if an acquisition has already been performed. 1. From the Main Menu, press Analysis Setup. 2. Select the Channels tab.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 3. Press Import from Trace. All peaks from the current trace will be added to the channel list. A warning message will be displayed if any channels are overlapping. Press OK to close the warning window. Note: Changes can be applied to any channel at any time. Note: If some channels were already present in the channel list, the new channels created with the Add Current Peaks button will be added to the list.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 4. If you want to apply the above settings to the active trace, select the Apply to current measurement and re-analyze option and press OK. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters Managing Favorites Favorites are configurations files that contain all of the parameters from the Analysis Setup tab and Acquisition tab. When you often use the same settings, you can save them as a favorite, then recall them for future acquisitions. To apply a test configuration to the current acquisition: 1. From the Main Menu, press Analysis Setup. OR From the main window, press 250 .
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 2. Select the Favorites tab.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 3. To apply the settings from a favorite file to the current analysis setup, select a file from the favorites list and press Apply Selection. The apply selection button will be enabled only when a file is selected from the favorites list. When the Apply Selection button is pressed, the content of the file will be loaded in the other tabs of this page.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 4. If you want to apply the above settings to the active trace, select the Apply to current measurement and re-analyze option and press OK. 5. Press OK to load the configuration and close the window, or press Cancel to exit without saving.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters To save a test configuration: 1. From the Main Menu, press Analysis Setup. OR From the main window, press 254 .
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 2. Select the Favorites tab.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 3. To save an analysis setup to a file, press Save As. The default directory where the file will be saved is the favorites folder. You should use this folder unless you save the file on a USB stick. 4. In the Save As window, enter a file name and press Save. The file will be added to the favorites list in the Analysis setup – Favorites window.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 5. If you want to apply the above settings to the active trace, select the Apply to current measurement and re-analyze option and press OK. 6. Press OK to load the configuration and close the window, or press Cancel to exit without saving.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters To import a test setup: 1. From the Main Menu, press Analysis Setup. OR From the main window, press 258 .
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 2. Select the Favorites tab. 3. Press Import to import an analysis setup from a file.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 4. From the Import window, select the file you want to import and press Open. The file will be added to the favorites list in the Analysis setup – Favorites window.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 5. If you want to apply the above settings to the active trace, select the Apply to current measurement and re-analyze option and press OK. 6. Press OK to load the configuration and close the window, or press Cancel to exit without saving.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters To delete a test configuration: 1. From the Main Menu, press Analysis Setup. OR From the main window, press 262 .
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 2. Select the Favorites tab.
Setting Up the Instrument in EDFA Mode Setting Up EDFA Analysis Parameters 3. To delete a configuration file from the favorites list, select a file from the favorites list and press Delete. Press Yes to delete the file, else press No.
Setting Up the Instrument in EDFA Mode Setting Up Acquisition Parameters Setting Up Acquisition Parameters Before performing your test, you must set the acquisition type and parameters. There are three types of acquisitions in EDFA mode: Single, Averaging and Real-Time. ³ Single: Spectral measurement is performed once. The results are displayed according to this measurement. In single mode, noise measurement can be performed In-Band if the option is available.
Setting Up the Instrument in EDFA Mode Setting Up Acquisition Parameters To set parameters in the Acquisition tab: 1. From the main window, select the Acquisition tab. 2. Select the acquisition type. ³ If you are performing a Single or Real-Time acquisition, you cannot modify the number of scans count value.
Setting Up the Instrument in EDFA Mode Setting Up Acquisition Parameters ³ If you are performing an Averaging type acquisition, enter the number of scans the unit will perform. 3. Press Input or Output to specify which position to use to store the next acquisition. 4. Select the wavelength range for your acquisition. You can select the wavelength range by entering the start and stop values or by selecting a range on the double slider.
Setting Up the Instrument in EDFA Mode Setting Up Acquisition Parameters The wavelength range covered within these bands of the spectra are listed below. 268 ³ O band (original): 1259 to 1361 nm ³ E band (extended): 1359 to 1461 nm ³ S band (short wavelengths): 1459 to 1531 nm ³ C band (conventional “erbium window”): 1529 to 1566 nm ³ L band (long wavelengths): 1564 to 1626 nm ³ U band (ultralong wavelengths): 1624 to 1650 nm.
10 Testing DWDM Systems Optical spectrum analysis is the measurement of optical power as a function of wavelength or frequency and optical signal to noise ratio (OSNR). Applications include commissioning of a new DWDM or CWDM link, as well as maintenance and troubleshooting of existing networks. IMPORTANT For optimal test results, you must allow a minimum warm up period of two hours for your Optical Spectrum Analyzer before starting your tests.
Testing DWDM Systems Using the Discover Feature than 0.001 nm or 0.001 GHz, then their width is reduce to the lower width. If the width of two channels is at 25 GHz and they still overlap, then the width is not reduced and application considers it as a multi-peak signal (like recent modulation formats for 10 Gb/s or 40 Gb/s) and sets the width of the channel to 50 GHz and calculates the results based on this information. A new single acquisition starts using the modified wavelength range.
Testing DWDM Systems Using the Discover Feature To start an automatic setup scan: From the Main Menu, press Discover.
Testing DWDM Systems Using the Discover Feature Note: If you already have an active trace on screen that was modified, you will be prompted to save it. A scan starts automatically. When the automatic scan is complete, you can start using these newly detected parameters. Simply press Start to perform another measurement with the newly found settings.
Testing DWDM Systems Starting a Measurement Starting a Measurement Note: Before starting a measurement you must select and configure a test mode. You will find the instructions to select a test mode in Selecting a Test Mode on page 18.
Testing DWDM Systems Starting a Measurement Drift Mode DFB Mode 274 FTB-5240S/5240BP
Testing DWDM Systems Starting a Measurement Spectral Transmittance Mode EDFA Mode Optical Spectrum Analyzer 275
Testing DWDM Systems Starting a Measurement When an acquisition is undergoing in the module, the Start button changes to Stop. Pressing the Stop button will end the acquisition. You are notified that the acquisition is in progress in the status bar. When the acquisition is complete, the active trace contains the graph, the result data, the acquisition and analysis setup, the trace information and all pass-fail status if activated.
11 Managing Results Your Optical Spectrum Analyzer allows you to manage results in the WDM, Drift, DFB, Spectral Transmittance and EDFA modes. You can view the trace details, channel results and global results for all measured channels. The application also allows you to edit setup parameters and re-analyze the results for WDM, EDFA and Spectral Transmittance modes. You can use zoom options on the trace, configure markers to view the power values for specific wavelengths, and view trace information.
Managing Results Managing WDM Test Results Managing WDM Test Results The application allows you to view and manage your WDM test results. You can view the graph of your acquisition, results for a single channel, global results and information about the trace. Graph Tab The Graph tab allows you to view the spectrum of the active trace. This graph represents the optical power against wavelength.
Managing Results Managing WDM Test Results When the acquisition is taken (see Starting a Measurement on page 273 for details on how to perform a test), the trace will be displayed in the Graph tab with information along the following axis values: ³ X axis: wavelength in nm or frequency in THz ³ Y axis: optical power expressed in dBm, as measured in the optical resolution bandwidth (RBW) of the OSA. This reference RBW is shown at the bottom right of the graph.
Managing Results Managing WDM Test Results Your application allows you to toggle the view of your WDM main window. You can change the view of the upper and lower tabs from the normal view to 100 % upper tabs or 100 % lower tabs view. For 100 % upper tabs view, press 280 .
Managing Results Managing WDM Test Results For 100 % lower tabs view, press . The graph will display peak indicators for all the channels found by the application. A blue horizontal bar ( ) will be displayed on the top of the channels, with a red horizontal line over the peaks to indicate the peak position.
Managing Results Managing WDM Test Results The graph will also display the noise level for a channel with a doted line under the selected peak. The width of the noise level indicator shall be set according to the current Noise for OSNR setting. ³ If Noise for OSNR is IEC, then the width of the noise level indicator will be equal to the full width of the channel.
Managing Results Managing WDM Test Results Results Tab The results table shows channel results for the active trace. The results for only the channels within the scan range will be displayed. The pass/fail verdict for thresholds are also displayed in the results table. If the verdict is fail for any parameter, its value will appear in red. To view results: From the main window, select the Results tab.
Managing Results Managing WDM Test Results ³ Noise (dBm): indicates the level of the noise for the selected channel (according to the current calculation method, in dBm). ³ BW 3.00 dB (nm): indicates bandwidth measured by taking the width of a signal at 50 % linear power of the peak or -3 dB from the peak. ³ BW x dB (nm): indicates bandwidth measured by taking the width of a signal at x dB from the peak.
Managing Results Managing WDM Test Results Markers Tab You can use markers to perform manual measurements and verification directly on the trace. There are two vertical and two horizontal markers indicating the wavelength and power positions respectively, which you can also move directly on the trace using the zoom select option. You can measure actual power and wavelength values of any point on the trace.
Managing Results Managing WDM Test Results To define a marker: 1. From the main window, press the Markers tab. 2. Set the marker by entering precise values in the A, B, C, and D boxes. Vertical markers A and B appears on the graph and the following values related to the vertical markers will be displayed in the Markers tab. ³ power value corresponding to the wavelength position of both the markers.
Managing Results Managing WDM Test Results You can also move the markers directly on the Graph tab. Drag the marker to the desired area in the display. You will notice that the corresponding box in the Markers tab changes according to the marker’s position. If you want to set a precise value for the marker, simply enter it in the box. Note: After using the zoom tools in the Graph tab, you can only move the markers again on the graph after deactivating the zoom.
Managing Results Managing WDM Test Results Trace Info. Tab After acquiring a trace, you might want to view details about the acquisition. The Trace Info. tab shows information related to acquisition parameters and conditions. You can also edit information about the tested fiber and job or add comments. This information is saved along with the trace. To view trace information parameters: From the main window, select the Trace Info. tab. To edit general information: 1.
Managing Results Managing WDM Test Results 3. Select the General tab. 4. Edit the general information as required. Note: If you want to apply the above settings to the Preferences tab, select the Apply to Preferences option and press OK. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Clear to clear all the changes made in the General tab.
Managing Results Managing WDM Test Results To edit trace information: 1. From the main window, select the Trace Info. tab. 2. Press Trace Identification. 3. Select the Information tab. 4. Edit the information as required. Note: If you want to apply the above settings to the Preferences tab, select the Apply to Preferences option and press OK. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving.
Managing Results Managing WDM Test Results To edit comments: 1. From the main window, select the Trace Info. tab. 2. Press Trace Identification. 3. Select the Comments tab. 4. Edit comments in the Comments window for the current trace. Note: If you want to apply the above settings to the preferences tab, select the Apply to Preferences option and press OK. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving.
Managing Results Managing WDM Test Results Channel Results Tab When you select a row from the Results tab, the Channel Results tab will show complete information about the parameters measured for the selected channel. The pass/fail verdict for thresholds are also displayed in the Channel Results tab. If the verdict is fail for any parameter, its value will appear in red. If the verdict is pass, its value will appear in green. To view channel results: 1. From the main window, select Channel Results tab.
Managing Results Managing WDM Test Results 2. Select a row from the Results tab to view the channel results for the selected channel. ³ Channel name: indicates the name of the channel as defined in the channel list. ³ Center wavelength/frequency: indicates the spectral center-of-mass for the peak in that channel. ³ Wavelength/Frequency deviation: indicates the difference between the channel center wavelength/frequency and the measured signal center wavelength/frequency.
Managing Results Managing WDM Test Results ³ Bandwidth 3.00 dB: indicates bandwidth measured by taking the width of a signal at 50 % linear power of the peak or -3 dB from the peak. ³ Bandwidth x dB: indicates bandwidth measured by taking the width of a signal at x dB from the peak. ³ Channel number: indicates the number of the channel. Channel 1 corresponds to the first channel found. ³ Channel center: indicates the channel center for the selected channel.
Managing Results Managing WDM Test Results ³ Noise for OSNR: indicates which calculation method to use for OSNR value. Fixed range IEC based (IEC): The IEC method uses the interpolation of noise measured on both sides of the signal to estimate the noise level. The position at which the noise is estimated from the center wavelength is given by the OSNR distance. In-Band (InB): The In-Band method uses a series of scans having different polarization states to calculate the noise level in band.
Managing Results Managing WDM Test Results You can include selected channels results in the global results. These channels will be integrated in the average signal power, average OSNR, flatness, etc. in the global results and will be enabled in the Results tab. To include channels in the global measurement results: 1. From the main window, select Channel Results tab.
Managing Results Managing WDM Test Results 2. Select a row from the Results tab to view the channel results for the selected channel.
Managing Results Managing WDM Test Results 3. Select the Include in calculation option.
Managing Results Managing WDM Test Results To re-analyze channel results: 1. From the main window, select the Channel Results tab. 2. Press Channel Parameters.
Managing Results Managing WDM Test Results 3. Edit the values as explained below: ³ Channel number: indicates the number of the channel. This field value cannot be edited. ³ Channel name: indicates the name of the channel. ³ Channel Center (nm or THz): indicates the central wavelength/frequency for the channel. ³ Channel width (GHz or nm): indicates the limit inside which the power values will be considered in the channel.
Managing Results Managing WDM Test Results ³ Signal power calculation: indicates which calculation method to apply for signal power value. Integrated signal power: The integrated signal power represents the sum of the power values included between the channel limits of this channel, minus the estimated noise contribution between the same boundaries.
Managing Results Managing WDM Test Results 4. Edit the thresholds as explained below: ³ Wavelength/Frequency (nm/GHz): indicates the channel’s central wavelength/frequency. ³ Signal power (dBm): indicates the signal power for the selected channel (excludes noise). ³ OSNR (dB): is the Optical Signal to Noise Ratio, given by Signal power (according to the current calculation method, in dBm) minus Noise (according to the current calculation method, in dBm).
Managing Results Managing WDM Test Results Note: If a channel is already included in the channel list, the application will ask if you want to replace the threshold and analysis parameters for that channel. Select Yes, No or Cancel as required. If the channel is not present in the channel list, it will be added provided the number of channels does not exceed the maximum allowed count of 1000 channels in the channel list.
Managing Results Managing WDM Test Results Global Results Tab The application allows you to view the global results of the current measurement. You can also edit global parameters to reanalyze the active trace. The pass/fail verdict for thresholds are displayed in the Global Results tab. If the verdict is fail for any parameter, its value will appear in red. If the verdict is pass, its value will appear in green. To view global results: From the main window, select the Global Results tab.
Managing Results Managing WDM Test Results ³ Total power in scan range: indicates the total power for the selected scan range. ³ Channel count: indicates the number of channels detected after an acquisition for the selected scan range. ³ Empty channel count: indicates the number of empty channels from the channel list. ³ Peak detection level: indicates the minimum power level from where the peak can be considered as a signal.
Managing Results Managing WDM Test Results Changing Active Trace Analysis Parameters and Re-analyzing The global parameters modifies the active trace. These changes pertain to the analysis, thresholds and the channel parameters. After changing the parameters, you can analyze the trace again to view the results. Changing Global Analysis Parameters Note: The modifications made to the global analysis parameters will be applied to the active trace only. To change analysis parameters: 1.
Managing Results Managing WDM Test Results 2. Press Global Parameters. 3. Select the Analysis tab. 4. Enter values in the boxes as explained below: ³ Peak detection level (dBm): indicates the minimum power level from where the peak can be considered as a signal. ³ RBW for OSNR (nm): indicates the resolution bandwidth for the selected OSNR value. The resolution bandwidth of an OSA determines its ability to deal with close optical channel spacing.
Managing Results Managing WDM Test Results ³ Wavelength offset (nm): indicates the offset value applied on the wavelength. You can use an offset to adjust your unit. This does not replace a calibration performed at EXFO, but it can help you achieve the specifications if you have determined that, for example, your modules are used beyond the normal allowed. Entering a value in THz is not possible. The wavelength offset appears below the graph, on the right, next to the arrow.
Managing Results Managing WDM Test Results Changing Default Channel Parameters Default channel settings will define how any channel found outside the channel list will be analyzed. To change default channel parameters: 1. From the main window, select the Global Results tab.
Managing Results Managing WDM Test Results 2. Press Global Parameters. 3. Select the Default Channel tab.
Managing Results Managing WDM Test Results 4. Enter values in the boxes as explained below: ³ Clear the Activate default channel selection, to use the currently defined channel for analysis. This reduces the analysis time by eliminating the peak detection over the complete spectral range. The peaks outside the defined channel will not be detected or analyzed. ³ Channel width (GHz or nm): indicates the limit inside which the power values will be considered in the channel.
Managing Results Managing WDM Test Results ³ Signal power calculation: indicates which calculation method to apply for signal power value. Integrated signal power: The integrated signal power represents the sum of the power values included between the channel limits of this channel, minus the estimated noise contribution between the same boundaries.
Managing Results Managing WDM Test Results 5. Press OK to save the changes, re-analyze data and close the window, or press Cancel to exit without saving. Press Restore Defaults to remove all the changes and apply the default values. Changing Global Thresholds Parameters The application allows you to activate and deactivate the threshold functionality with a single control.
Managing Results Managing WDM Test Results To change global threshold parameters: 1. From the main window, select the Global Results tab.
Managing Results Managing WDM Test Results 2. Press Global Parameters. 3. Select the Global Thresholds tab. 4. Select the Activate all thresholds option, to manually set the global threshold values. 5. Enter values in the boxes as explained below: ³ Average signal power (dBm): is the sum of all signal power of all the peaks detected in the current acquisition, divided by the total number of peaks.
Managing Results Managing WDM Test Results ³ Average OSNR (dB): indicates the sum of the entire OSNR of the peaks detected in the current acquisition, divided by the total number of peaks. ³ OSNR flatness (dB): is the difference between the maximum and minimum OSNR values of the detected peaks, in dB. ³ Empty channel count: Select this option to obtain the number of empty channels from the channel list in the Global Results tab.
Managing Results Managing WDM Test Results Changing Default Thresholds Parameters The default thresholds will be applied to any channel found outside the channel list during the current acquisition. Note: The default thresholds settings are enabled only when the Activate all thresholds option is selected in the Global Thresholds tab. For more information, see Changing Global Thresholds Parameters on page 313.
Managing Results Managing WDM Test Results 2. Press Global Parameters. 3. Select the Default Thresholds tab.
Managing Results Managing WDM Test Results 4. Enter values in the boxes as explained below: ³ Wavelength/Frequency (nm/GHz): indicates the channel’s central wavelength/frequency. ³ Signal power (dBm): indicates the signal power for the selected channel (excludes noise). ³ OSNR (dB): is the Optical Signal to Noise Ratio, given by Signal power (according to the current calculation method, in dBm) minus Noise (according to the current calculation method, in dBm).
Managing Results Managing Drift Test Results Managing Drift Test Results The application allows you to view and manage your drift test results. You can view the dashboard, channel graph and WDM graph of your drift acquisition, channel history results for a single channel and information about the trace. Dashboard Tab The dashboard shall provide a way to view at-a-glance the pass/fail status of each parameter for each channel that is measured during a drift measurement.
Managing Results Managing Drift Test Results You can select a channel directly from the dashboard or from the Channel History tab. For each channel, the dashboard displays the pass/fail status for each of the following parameters: ³ Central wavelength/frequency ³ Signal power ³ OSNR Both the current pass/fail status (last completed acquisition) and the historical pass/fail status are displayed in the dashboard.
Managing Results Managing Drift Test Results ³ 322 The dashboard shows a global status (all channels) for each parameter. This global status is set to Fail if at least a single channel has a failed historical status for that given parameter, else the global status is set to Pass.
Managing Results Managing Drift Test Results ³ The dashboard displays a channel status (all parameters) for a given channel. This channel status is set to Fail if at least one of the parameter has a failed historical status for that given channel, else the channel status is set to Pass.
Managing Results Managing Drift Test Results Channel Graph Tab The Channel Graph tab displays three different graphs for the selected channel. You can select which graphs you want to display from the Drift Results tab in the Preferences Window.
Managing Results Managing Drift Test Results Channel History Tab The Channel History table shows channel results for the active trace. The result is displayed for the selected channel only. The pass/fail verdict for thresholds are also displayed in the results table. If the verdict is fail for any parameter, its value will appear in red. The application displays the progress of the measurement in the status bar, while the acquisition is taken.
Managing Results Managing Drift Test Results To view channel history results: From the main window, select the Channel History tab.
Managing Results Managing Drift Test Results A small red marker ( ) will point down at the peak in the WDM Graph tab when you select a channel in the Channel History tab. The red marker will move accordingly to indicate the corresponding peak on the graph, with a focus on the selected channel.
Managing Results Managing Drift Test Results WDM Graph Tab The WDM Graph tab allows you to view the spectrum of the active trace for the last WDM acquisition in your drift measurement. This graph represents the optical power against wavelength. When there is no acquisition, the graph zone shows a procedure explaining how to take measurements with the OSA application.
Managing Results Managing Drift Test Results When the acquisition is taken (see Starting a Measurement on page 273 for details on how to perform a test), the trace will be displayed in the WDM Graph tab with information along the following axis values: ³ X axis: wavelength in nm or frequency in THz ³ Y axis: optical power expressed in dBm, as measured in the optical resolution bandwidth (RBW) of the OSA. This reference RBW is shown at the bottom right of the graph.
Managing Results Managing Drift Test Results Markers Tab You can use markers to perform manual measurements and verification directly on the trace. There are two vertical and two horizontal markers indicating the wavelength and power positions respectively, which you can also move directly on the trace using the zoom select option. You can measure actual power and wavelength values of any point on the trace.
Managing Results Managing Drift Test Results To define a marker: 1. From the main window, press the Markers tab. 2. Set the marker by entering precise values in the A, B, C, and D boxes. Vertical markers A and B appears on the graph and the following values will be displayed in the Markers tab. ³ power value corresponding to the wavelength position of both the markers.
Managing Results Managing Drift Test Results You can also move the markers directly on the WDM Graph tab. Drag the marker to the desired area in the display. You will notice that the corresponding box in the Markers tab changes according to the marker’s position. If you want to set a precise value for the marker, simply enter it in the box. Note: After using the zoom tools in the WDM Graph tab, you can only move the markers again on the graph after deactivating the zoom.
Managing Results Managing Drift Test Results To edit general information: 1. From the main window, select the Trace Info. tab. 2. Press Trace Identification. 3. Select the General tab. 4. Edit the general information as required. Note: If you want to apply the above settings to the Preferences tab, select the Apply to Preferences option and press OK. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Clear to clear all the changes made in the General tab.
Managing Results Managing Drift Test Results To edit trace information: 1. From the main window, select the Trace Info. tab. 2. Press Trace Identification. 3. Select the Information tab. 4. Edit the information as required. Note: If you want to apply the above settings to the Preferences tab, select the Apply to Preferences option and press OK. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving.
Managing Results Managing Drift Test Results To edit comments: 1. From the main window, select the Trace Info. tab. 2. Press Trace Identification. 3. Select the Comments tab. 4. Edit comments in the Comments window for the current trace. Note: If you want to apply the above settings to the preferences tab, select the Apply to Preferences option and press OK. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving.
Managing Results Managing Drift Test Results Channel Results Tab When you select a channel in the Channel History tab, the Channel Results tab will show complete information about the parameters measured for the selected channel. The pass/fail verdict for thresholds are also displayed in the Channel Results tab. If the verdict is fail for any parameter, its value will appear in red. If the verdict is pass, its value will appear in green. To view channel results: 1.
Managing Results Managing Drift Test Results 2. Select a channel from the Channel History tab to view the channel results for the selected channel. ³ Channel name: indicates the name of the channel as defined in the channel list. ³ Center wavelength/frequency: indicates the spectral center-of-mass for the peak in that channel. ³ Signal power: indicates the signal power for the selected channel (excludes noise).
Managing Results Managing Drift Test Results ³ Bandwidth x dB: indicates bandwidth measured by taking the width of a signal at x dB from the peak. ³ Channel center: indicates the channel center for the selected channel. ³ Signal power calculation: indicates which calculation method to apply for signal power value.
Managing Results Managing Drift Test Results In-Band narrow filter (InB nf): The In-Band narrow filter method uses the In-Band method with additional processing to provide an accurate OSNR value for the narrow carved noise. This is because with narrow filters, the noise level under the peak is not uniform and the OSNR value depends on the processing width selected. ³ Peak detection level: indicates the minimum power level from where the peak can be considered as a signal.
Managing Results Managing DFB Test Results Managing DFB Test Results The application allows you to view and manage your DFB test results. You can view the graph and results for your DFB laser source. DFB Graph Tab The DFB Graph tab allows you to view the spectrum of a DFB laser source. This graph represents the optical power against wavelength. When there is no acquisition, the graph zone shows a procedure explaining how to take measurements with the OSA application.
Managing Results Managing DFB Test Results When the acquisition is taken (see Starting a Measurement on page 273 for details on how to perform a test), the trace will be displayed in the DFB Graph tab with information along the following axis values: ³ X axis: wavelength in nm or frequency in THz ³ Y axis: optical power expressed in dBm, as measured in the optical resolution bandwidth (RBW) of the OSA. This reference RBW is shown at the bottom right of the graph.
Managing Results Managing DFB Test Results Results Tab You can view the analysis of the DFB laser source from the Results tab. To view results: From the main window, select the Results tab. The following information related to the DFB measurement is displayed in the Results table: 342 ³ Center wavelength/frequency: indicates the spectral center-of-mass for the peak. ³ Peak power (dBm): indicates the peak signal power. ³ Bandwidth 3.
Managing Results Managing DFB Test Results ³ Right stopband: indicates the spectral position difference between the main mode and the closest side-mode on the right. ³ Two-sided stopband: indicates the spectral position difference between closest left and right side-modes adjacent to the main mode. ³ Central offset: indicates the spectral position of the main mode minus the mean of the spectral positions of the first adjacent left and right side-modes.
Managing Results Managing DFB Test Results Markers Tab You can use markers to perform manual measurements and verification directly on the trace. There are two vertical markers indicating the wavelength positions, which you can also move directly on the trace using the zoom select option. You can measure actual power and wavelength values of any point on the trace. Note: These markers are visible in the DFB Graph tab only when the markers tab is selected in the main window.
Managing Results Managing DFB Test Results To define a marker: 1. From the main window, press the Markers tab. 2. Set the marker by entering precise values in the A and B boxes. Vertical markers A and B appears on the graph and the following values will be displayed in the Markers tab. ³ power value corresponding to the wavelength position of both the markers. ³ wavelength difference between the markers (A-B) ³ power difference in dB between the markers ³ integrated power between markers in dBm.
Managing Results Managing DFB Test Results Note: After using the zoom tools in the DFB Graph tab, you can only move the markers again on the graph after deactivating the zoom. Pressing the arrow in the zoom tools section will deactivate the zoom function. Note: Markers A and B cannot cross. Displacing a marker over the second one will cause both markers to move together. Trace Info. Tab After acquiring a trace, you might want to view details about the acquisition. The Trace Info.
Managing Results Managing DFB Test Results 3. Select the General tab. 4. Edit the general information as required. Note: If you want to apply the above settings to the Preferences tab, select the Apply to Preferences option and press OK. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Clear to clear all the changes made in the General tab.
Managing Results Managing DFB Test Results To edit trace information: 1. From the main window, select the Trace Info. tab. 2. Press Trace Identification. 3. Select the Information tab. 4. Edit the information as required. Note: If you want to apply the above settings to the Preferences tab, select the Apply to Preferences option and press OK. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving.
Managing Results Managing DFB Test Results To edit comments: 1. From the main window, select the Trace Info. tab. 2. Press Trace Identification. 3. Select the Comments tab. 4. Edit comments in the Comments window for the current trace. Note: If you want to apply the above settings to the preferences tab, select the Apply to Preferences option and press OK. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving.
Managing Results Managing Spectral Transmittance Test Results Managing Spectral Transmittance Test Results The application allows you to view and manage your spectral transmittance test results. You can view the graph of your acquisition, results for a single channel, global results and information about the trace. ST Graph Tab The ST Graph tab allows you to view the spectrum of the input trace, the output trace and the calculated ST trace. This graph represents the optical power against wavelength.
Managing Results Managing Spectral Transmittance Test Results When the acquisition is taken (see Starting a Measurement on page 273 for details on how to perform a test), the trace will be displayed in the ST Graph tab with information along the following axis values: ³ X axis: wavelength in nm or frequency in THz ³ Y axis: optical power expressed in dBm, as measured in the optical resolution bandwidth (RBW) of the OSA. This reference RBW is shown at the bottom right of the graph.
Managing Results Managing Spectral Transmittance Test Results Results Tab The results table shows the spectral transmittance results for the active trace. Results for only the channels within the scan range will be displayed. To view results: From the main window, select the Results tab. The following results related to the channels are displayed: ³ Nominal center wavelength or frequency (nm or Thz): indicates a single value that represent the channels center wavelength (in nm) or frequency (in THz).
Managing Results Managing Spectral Transmittance Test Results Markers Tab You can use markers to perform manual measurements and verification directly on the trace. There are two vertical and horizontal markers indicating the wavelength and power positions respectively, which you can also move directly on the trace using the zoom select option. You can measure actual power and wavelength values of any point on the trace.
Managing Results Managing Spectral Transmittance Test Results To define a marker: 1. From the main window, press the Markers tab. 2. Set the marker by entering precise values in the A, B, C, and D boxes. Vertical markers A and B appears on the graph and the following values will be displayed in the Markers tab. ³ Input and Output power values corresponding to the wavelength position of both the markers.
Managing Results Managing Spectral Transmittance Test Results You can also move the markers directly on the ST Graph tab. Drag the marker to the desired area in the display. You will notice that the corresponding box in the Markers tab changes according to the marker’s position. If you want to set a precise value for the marker, simply enter it in the box. Note: After using the zoom tools in the ST Graph tab, you can only move the markers again on the graph after deactivating the zoom.
Managing Results Managing Spectral Transmittance Test Results Trace Info. Tab After acquiring a trace, you might want to view details about the acquisition. The Trace Info. tab shows information related to acquisition parameters and conditions. You can also edit information about the tested fiber and job or add comments. This information is saved along with the trace. To view trace information parameters: From the main window, select the Trace Info. tab.
Managing Results Managing Spectral Transmittance Test Results 3. Select the General tab. 4. Edit the general information as required. Note: If you want to apply the above settings to the Preferences tab, select the Apply to Preferences option and press OK. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Clear to clear all the changes made in the General tab.
Managing Results Managing Spectral Transmittance Test Results To edit trace information: 1. From the main window, select the Trace Info. tab. 2. Press Trace Identification. 3. Select the Information tab. 4. Edit the information as required. Note: If you want to apply the above settings to the Preferences tab, select the Apply to Preferences option and press OK. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving.
Managing Results Managing Spectral Transmittance Test Results To edit comments: 1. From the main window, select the Trace Info. tab. 2. Press Trace Identification. 3. Select the Comments tab. 4. Edit comments in the Comments window for the current trace. Note: If you want to apply the above settings to the preferences tab, select the Apply to Preferences option and press OK. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving.
Managing Results Managing Spectral Transmittance Test Results ST Results Tab The ST Results tab will show complete information about the spectral transmittance parameters and the global analysis parameters. To view ST results: 1. From the main window, select ST Results tab. The following information is displayed in the ST Results pane: ³ Nominal center wavelength or frequency (nm or Thz): indicates a single value that represent the channels center wavelength (in nm) or frequency (in THz).
Managing Results Managing Spectral Transmittance Test Results ³ Insertion loss max (dB): indicates the maximum difference between a reference power level and the measured power level (in dB). ³ Bandwidth 1 at (dB): indicates bandwidth measured by taking the width of a signal at x dB from the peak. ³ Bandwidth 2 at (dB): indicates bandwidth measured by taking the width of a signal at y dB from the peak.
Managing Results Managing Spectral Transmittance Test Results ³ Input wavelength offset (nm): indicates the offset value applied on the input wavelength. You can use an offset to adjust your unit. This does not replace a calibration performed at EXFO, but it can help you achieve the specifications if you have determined that, for example, your modules are used beyond the normal allowed. Entering a value in THz is not possible. The wavelength offset appears below the graph, on the right, next to the arrow.
Managing Results Managing Spectral Transmittance Test Results To edit ST analysis parameters: 1. From the main window, select the ST Results tab.
Managing Results Managing Spectral Transmittance Test Results 2. Press Global Parameters.
Managing Results Managing Spectral Transmittance Test Results 3. Edit the values as explained below: ³ Channel definition (GHz): indicates the limit inside which the power values will be considered in the channel. Centred on max peak: Channel is centered on the lowest insertion loss peak. ITU Grid: Select the nearest ITU channel from the peak with lowest insertion loss. CWDM: Select the nearest CWDM channel from the peak with lowest insertion loss.
Managing Results Managing Spectral Transmittance Test Results ³ Channel range (GHz or nm): indicates the limit inside which the power values will be considered in the channel. Integrated power is calculated on channel width. ³ Bandwidth 1 at (dB): indicates bandwidth measured by taking the width of a signal at x dB from the peak. ³ Bandwidth 2 at (dB): indicates bandwidth measured by taking the width of a signal at y dB from the peak.
Managing Results Managing Spectral Transmittance Test Results ³ Output wavelength offset (nm): indicates the offset value applied on the output wavelength. You can use an offset to adjust your unit. This does not replace a calibration performed at EXFO, but it can help you achieve the specifications if you have determined that, for example, your modules are used beyond the normal allowed. Entering a value in THz is not possible.
Managing Results Managing EDFA Test Results Managing EDFA Test Results The application allows you to view and manage your EDFA test results. You can view the graph of your acquisition, results for a single channel, global results and information about the trace. EDFA Graph Tab The EDFA Graph tab allows you to view the spectrum of the active trace. This graph represents the optical power against wavelength.
Managing Results Managing EDFA Test Results When the acquisition is taken (see Starting a Measurement on page 273 for details on how to perform a test), the trace will be displayed in the EDFA Graph tab with information along the following axis values: ³ X axis: wavelength in nm or frequency in THz ³ Y axis: optical power expressed in dBm, as measured in the optical resolution bandwidth (RBW) of the OSA. This reference RBW is shown at the bottom right of the graph.
Managing Results Managing EDFA Test Results Results Tab The results table shows channel results for the active trace. The results for only the channels within the scan range will be displayed. To view results: From the main window, select the Results tab. The following information related to the channels is displayed in the Results table: 370 ³ Ch#: indicates the channel number. Channel 1 corresponds to the first channel found. ³ Name: indicates the channel name as defined in the channel list.
Managing Results Managing EDFA Test Results ³ Noise Figure: indicates the EDFA’s noise figure measured for the selected channel. ³ Gain - Avg. Gain: indicates the selected channel gain minus the average of all channel gains. A small red marker ( ) will point down at the peak in the EDFA Graph tab when you select a row in the Results tab. The red marker will move accordingly to indicate the corresponding peak on the graph, with a focus on the selected channel.
Managing Results Managing EDFA Test Results Markers Tab You can use markers to perform manual measurements and verification directly on the trace. There are two vertical and horizontal markers indicating the wavelength and power positions respectively, which you can also move directly on the trace using the zoom select option. You can measure actual power and wavelength values of any point on the trace.
Managing Results Managing EDFA Test Results To define a marker: 1. From the main window, press the Markers tab. 2. Set the marker by entering precise values in the A, B, C, and D boxes. Vertical markers A and B appears on the graph and the following values will be displayed in the Markers tab. ³ Input and Output power values corresponding to the wavelength position of both the markers.
Managing Results Managing EDFA Test Results You can also move the markers directly on the EDFA Graph tab. Drag the marker to the desired area in the display. You will notice that the corresponding box in the Markers tab changes according to the marker’s position. If you want to set a precise value for the marker, simply enter it in the box. Note: After using the zoom tools in the EDFA Graph tab, you can only move the markers again on the graph after deactivating the zoom.
Managing Results Managing EDFA Test Results Trace Info. Tab After acquiring a trace, you might want to view details about the acquisition. The Trace Info. tab shows information related to acquisition parameters and conditions. You can also edit information about the tested fiber and job or add comments. This information is saved along with the trace. To view trace information parameters: From the main window, select the Trace Info. tab.
Managing Results Managing EDFA Test Results 3. Select the General tab. 4. Edit the general information as required. Note: If you want to apply the above settings to the Preferences tab, select the Apply to Preferences option and press OK. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving. Press Clear to clear all the changes made in the General tab.
Managing Results Managing EDFA Test Results To edit trace information: 1. From the main window, select the Trace Info. tab. 2. Press Trace Identification. 3. Select the Information tab. 4. Edit the information as required. Note: If you want to apply the above settings to the Preferences tab, select the Apply to Preferences option and press OK. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving.
Managing Results Managing EDFA Test Results To edit comments: 1. From the main window, select the Trace Info. tab. 2. Press Trace Identification. 3. Select the Comments tab. 4. Edit comments in the Comments window for the current trace. Note: If you want to apply the above settings to the preferences tab, select the Apply to Preferences option and press OK. 5. Press OK to save the changes and close the window, or press Cancel to exit without saving.
Managing Results Managing EDFA Test Results Channel Results Tab When you select a row from the Results tab, the Channel Results tab will show complete information about the parameters measured for the selected channel. To view channel results: 1. From the main window, select Channel Results tab.
Managing Results Managing EDFA Test Results 2. Select a row from the Results tab to view the channel results for the selected channel. 3. Under Results pane, you can view the following results: ³ Channel name: indicates the channel name as defined in the channel list. ³ Channel Center (nm or THz): indicates the central wavelength/frequency for the channel. ³ Input signal power (dBm): indicates the input signal power for the selected channel (excludes noise).
Managing Results Managing EDFA Test Results ³ Channel index: indicates the channel number. Channel 1 corresponds to the first channel found. ³ Noise figure: indicates the EDFA’s noise figure measured for the selected channel. ³ S %: indicates the current output power according to the measured output power (Output Signal Power / [Output Signal Power + PASE]). ³ PASE: indicates the power of the spontaneous emission amplified by EDFA.
Managing Results Managing EDFA Test Results You can include selected channels results in the global results calculation. To include channels in global measurement results: 1. From the main window, select Channel Results tab. 2. Select a row from the Results tab to view the channel results for the selected channel.
Managing Results Managing EDFA Test Results Optical Spectrum Analyzer 383
Managing Results Managing EDFA Test Results 3. Select the Include in calculation option.
Managing Results Managing EDFA Test Results To modify channel results parameters: 1. From the main window, select the Channel Results tab. 2. Press Channel Parameters.
Managing Results Managing EDFA Test Results 386 FTB-5240S/5240BP
Managing Results Managing EDFA Test Results 3. Edit the values as explained below: ³ Channel Center (nm or THz): indicates the central wavelength/frequency for the channel. ³ Channel name: indicates the name of the channel. ³ Channel width (GHz or nm): indicates the limit inside which the power values will be considered in the channel. 4. Press OK to save the changes for the active trace and close the window, or press Cancel to exit without saving.
Managing Results Managing EDFA Test Results Global Results Tab The application allows you to view the global results of the current measurement. You can also edit global parameters to reanalyze the active trace. To view global results: From the main window, select the Global Results tab.
Managing Results Managing EDFA Test Results ³ Average gain: indicates the sum of the gain of all detected channels in the current measurement, divided by the total number of channels. ³ Gain slope (tilt): indicates the slope of the linear fit on the gain values of the detected channels. Note: To edit global parameters, see Changing Active Trace Analysis Parameters on page 390.
Managing Results Managing EDFA Test Results Changing Active Trace Analysis Parameters The global parameters modifies the active trace. These changes pertain to the analysis and the channel parameters. Note: The modifications made to the global analysis parameters will be applied to the active trace only. To change global analysis parameters: 1. From the main window, select the Global Results tab. 2. Press Global Parameters.
Managing Results Managing EDFA Test Results 3. Under Default channel settings, modify the following parameters as needed: ³ Clear the Activate default channel selection, to use the currently defined channel for analysis. This reduces the analysis time by eliminating the peak detection over the complete spectral range. The peaks outside the defined channel will not be detected or analyzed. ³ Channel width (GHz or nm): indicates the limit inside which the power values will be considered in the channel.
Managing Results Managing EDFA Test Results 4. Under Global analysis parameters, modify the following parameters as needed: ³ Peak detection level (dBm): indicates the minimum power level from where the peak can be considered as a signal. ³ RBW for OSNR (nm): indicates the resolution bandwidth for the selected OSNR value. The resolution bandwidth of an OSA determines its ability to deal with close optical channel spacing. It is measured as the width of the response curve at half peak power (i.e.
Managing Results Managing EDFA Test Results ³ Input power offset (dB): indicates the offset value applied on the input power. You can use an offset to adjust your unit. This does not replace a calibration performed at EXFO, but it can help you achieve the specifications if you have determined that, for example, your modules are used beyond the normal allowed. The power offset appears in the graph, on the left, above the arrow. To edit the power offset value in percentage, press Edit % button.
Managing Results Managing EDFA Test Results ³ Output power offset (dB): indicates the offset value applied on the output power. You can use an offset to adjust your unit. This does not replace a calibration performed at EXFO, but it can help you achieve the specifications if you have determined that, for example, your modules are used beyond the normal allowed. The power offset appears in the graph, on the left, above the arrow. To edit the power offset value in percentage, press Edit % button.
Managing Results Managing EDFA Test Results Swapping EDFA Traces The Swap Trace feature allows you to swap EDFA input and output traces. With this feature, the input trace is replaced with the output trace and vice versa. All results are recalculated. Note: Swap Trace feature will not be available if there is no trace in the application. To swap EDFA traces: 1. From the Main Menu, press Swap trace. All the parameters in the application will be updated according to the modified traces.
Managing Results Using Zoom Controls Using Zoom Controls Use the zoom controls to change the scale of the trace display. You can zoom in on or out of the graph using the corresponding buttons or let the application automatically adjust the zoom on the currently selected peak from the results table. You can quickly zoom in on or out of a selected peak. You can also return to the original graph value. The application provides an automatic zoom on peak feature.
Managing Results Using Zoom Controls ³ You can zoom in or out on the center of the portion of the graph that is displayed by using, respectively, or . The application automatically adjusts the zoom by 50 % and 100 % respectively. To automatically zoom in on the selected peak: Select the peak on the graph or in the table results and press . To revert to the complete graph view: Press Optical Spectrum Analyzer .
Managing Results Managing Trace Files Managing Trace Files The application allows you to manage the trace files for all test modes. You can open saved trace files and save current traces. Note: The procedures explained below for managing the trace files are similar for all test modes. Clearing Trace Files The application allows you to clear the current trace and make room for new traces. To clear a trace: 1. From the Main Menu, Press File.
Managing Results Managing Trace Files 2. Press New.
Managing Results Managing Trace Files 3. If you had already acquired (but not saved) a trace, a warning window appears, asking you if you want to save the current trace. Press Yes to save the trace. Once the trace is saved, you can make room for a new trace. Press No to create a new trace without saving the previously acquired one. Press Cancel to return to the previous window.
Managing Results Managing Trace Files Opening Trace Files Opening a trace file saves you time as you do not need to perform your acquisition again and can continue working where you left off. To open a trace file: 1. From the Main Menu, Press File, and then press Open. OR From the main window, press . 2. If you had already acquired (but not saved) a trace, a warning window appears, asking you if you want to save the current trace. Press Yes to save the trace.
Managing Results Managing Trace Files Opening ST, EDFA and Legacy OSA trace files in WDM mode Your application allows you to open different files types in WDM mode. You can open Spectral Transmittance, EDFA and Legacy OSA file formats also along with the WDM file format, when the application is in the WDM mode. While loading a spectral transmittance (.osast) file in the WDM mode, the application shall re-analyze the newly imported data using the current Analysis Setup. While loading an EDFA (.
Managing Results Managing Trace Files If the file contains two traces (Input and Output), then the application allows you to select which trace to import. Select Input, Output, or Cancel as required. If Input or Output is selected, application imports the following data from the selected trace.
Managing Results Managing Trace Files Opening WDM trace file in DFB mode Your application allows you to open WDM file type in DFB mode. While loading a WDM (.osawdm) file in the DFB mode, the application shall re-analyze the newly imported data using the current Analysis Setup and imports the following data from the selected trace: ³ Raw trace data ³ Trace information ³ Trace identification An example of WDM trace file imported in DFB mode is shown below.
Managing Results Managing Trace Files Opening WDM trace file in ST mode Your application allows you to open WDM file type in spectral transmittance mode. While loading a WDM (.osawdm) file in spectral transmittance mode, the application behaves as if a new acquisition is requested. This means that the application does not change the modified state of the current measurement while loading a WDM file.
Managing Results Managing Trace Files 406 FTB-5240S/5240BP
Managing Results Managing Trace Files Opening WDM trace file in EDFA mode Your application allows you to open WDM file type in EDFA mode. While loading a WDM (.osawdm) file in EDFA mode, the application behaves as if a new acquisition is requested. This means that the application does not change the modified state of the current measurement while loading a WDM file. While loading a WDM file, the application allows you to select in which trace you want to import the WDM file.
Managing Results Managing Trace Files An example of WDM trace file imported in EDFA mode is shown below.
Managing Results Managing Trace Files Saving Trace Files The application allows you to save the trace files for future reference. To save files: 1. From the Main Menu, Press File, and then press Save As. OR From the main window, press . 2. If desired, change the location. 3. If desired, change the file name. 4. Press Save to save the trace, else press Cancel to exit the window. Note: Once a trace is overwritten, you cannot access it anymore.
Managing Results Generating Reports Generating Reports After performing any acquisition, the application allows you to generate a report for the current acquisition and save it in .html or .txt format depending on the supported file type for WDM, Drift, DFB, ST and EDFA test modes. The report file will include trace information, acquisition conditions and other results and details specific to each test mode. Note: The procedure explained below for generating reports is the same for all test modes.
Managing Results Generating Reports 2. Press Report. 3. In the Save As window, enter a file name. 4. From the Save as type list, select HTML files (*.html) to save the report in .html format (if the file type is supported for selected test mode).
Managing Results Generating Reports From the Save as type list, select txt files (*.txt) to save the report in .txt format (if the file type is supported for selected test mode).
Managing Results Generating Reports 5. Press Save. The report will be added to the Reports folder. You can change the location where you want to save the report as desired. You can view the saved report using the Windows Explorer. A sample WDM .
Managing Results Generating Reports A sample WDM .
Managing Results Generating Reports A sample Drift .
A sample Drift .
Managing Results Generating Reports A sample DFB .
Managing Results Generating Reports A sample Spectral Transmittance .
Managing Results Generating Reports A sample EDFA .
12 Maintenance To help ensure long, trouble-free operation: ³ Always inspect fiber-optic connectors before using them and clean them if necessary. ³ Keep the unit free of dust. ³ Clean the unit casing and front panel with a cloth slightly dampened with water. ³ Store unit at room temperature in a clean and dry area. Keep the unit out of direct sunlight. ³ Avoid high humidity or significant temperature fluctuations. ³ Avoid unnecessary shocks and vibrations.
Maintenance Cleaning EUI Connectors Cleaning EUI Connectors Regular cleaning of EUI connectors will help maintain optimum performance. There is no need to disassemble the unit. IMPORTANT If any damage occurs to internal connectors, the module casing will have to be opened and a new calibration will be required. To clean EUI connectors: 1. Remove the EUI from the instrument to expose the connector baseplate and ferrule. Turn Pull Push 2. Moisten a 2.
Maintenance Cleaning EUI Connectors 5. Repeat steps 3 to 4 with a dry cleaning tip. Note: Make sure you don’t touch the soft end of the cleaning tip. 6. Clean the ferrule in the connector port as follows: 6a. Deposit one drop of isopropyl alcohol on a lint-free wiping cloth. IMPORTANT Isopropyl alcohol may leave residues if used abundantly or left to evaporate (about 10 seconds). Avoid contact between the tip of the bottle and the wiping cloth, and dry the surface quickly. 6b.
Maintenance Recalibrating the Unit Recalibrating the Unit Manufacturing and service center calibrations are based on the ISO/IEC 17025 Standard, which states that calibration documents must not contain a recommended calibration interval, unless this has been previously agreed upon with the customer. Validity of specifications depends on operating conditions.
Maintenance Recycling and Disposal (Applies to European Union Only) Recycling and Disposal (Applies to European Union Only) Recycle or dispose of your product (including electric and electronic accessories) properly, in accordance with local regulations. Do not dispose of it in ordinary garbage receptacles. This equipment was sold after August 13, 2005 (as identified by the black rectangle).
13 Troubleshooting Viewing Online Documentation A PDF version of the FTB-5240S/5240BP Optical Spectrum Analyzer user guide is conveniently available at all times. To access the online user guide: Go to “C:\Program Files\EXFO\ToolBox\Help”. This folder contains a PDF version of the user guide. Contacting the Technical Support Group To obtain after-sales service or technical support for this product, contact EXFO at one of the following numbers.
Troubleshooting About About You can view the product version details and technical support information in this window. To view the information about the product: 1. From the Main Menu, press File.
Troubleshooting About 2. Press About.
Troubleshooting Transportation Transportation Maintain a temperature range within specifications when transporting the unit. Transportation damage can occur from improper handling. The following steps are recommended to minimize the possibility of damage: 430 ³ Pack the unit in its original packing material when shipping. ³ Avoid high humidity or large temperature fluctuations. ³ Keep the unit out of direct sunlight. ³ Avoid unnecessary shocks and vibrations.
14 Warranty General Information EXFO Inc. (EXFO) warrants this equipment against defects in material and workmanship for a period of one year from the date of original shipment. EXFO also warrants that this equipment will meet applicable specifications under normal use.
Warranty Liability Liability EXFO shall not be liable for damages resulting from the use of the product, nor shall be responsible for any failure in the performance of other items to which the product is connected or the operation of any system of which the product may be a part. EXFO shall not be liable for damages resulting from improper usage or unauthorized modification of the product, its accompanying accessories and software.
Warranty Exclusions Exclusions EXFO reserves the right to make changes in the design or construction of any of its products at any time without incurring obligation to make any changes whatsoever on units purchased. Accessories, including but not limited to fuses, pilot lamps, batteries and universal interfaces (EUI) used with EXFO products are not covered by this warranty.
Warranty Service and Repairs Service and Repairs EXFO commits to providing product service and repair for five years following the date of purchase. To send any equipment for service or repair: 1. Call one of EXFO’s authorized service centers (see EXFO Service Centers Worldwide on page 435). Support personnel will determine if the equipment requires service, repair, or calibration. 2.
Warranty EXFO Service Centers Worldwide EXFO Service Centers Worldwide If your product requires servicing, contact your nearest authorized service center. EXFO Headquarters Service Center 400 Godin Avenue Quebec (Quebec) G1M 2K2 CANADA EXFO Europe Service Center Omega Enterprise Park, Electron Way Chandlers Ford, Hampshire S053 4SE ENGLAND EXFO China Service Center/ Beijing OSIC Beijing New Century Hotel Office Tower, Room 1754-1755 No. 6 Southern Capital Gym Road Beijing 100044 P. R.
A Technical Specifications IMPORTANT The following technical specifications can change without notice. The information presented in this section is provided as a reference only. To obtain this product’s most recent technical specifications, visit the EXFO Web site at www.exfo.com. SPECIFICATIONS Notes a Spectral Measurement Wavelength range (nm) Wavelength uncertainty (nm) b a. All specifications are for a temperature of 23 °C ± 2 °C with an FC/UPC connector unless otherwise specified, after warm-up.
B SCPI Command Reference This appendix presents detailed information on the commands and queries supplied with your FTB-5240S/5240BP Optical Spectrum Analyzer. IMPORTANT Since the FTB-500 can house many instruments, you must explicitly specify which instrument you want to remotely control.
SCPI Command Reference Quick Reference Command Tree Quick Reference Command Tree Command Parameter(s) ABORt 443 CALCulate[1..
SCPI Command Reference Quick Reference Command Tree Command Parameter(s) LEVel? POWer OFFSet [OUTPut] [OUTPut]? RBW INSTrument OFFSet [OUTPut] 476 CHANnel? [IMMediate] MMEMory[1..n] LOAD 477 CHANnel COUNt? 479 OSNR AVERage? 480 FLATness? 481 AVERage? 482 FLATness? 483 INTegrated? 484 SIGPower INITiate[1..
SCPI Command Reference Quick Reference Command Tree Command STORe Parameter(s) 492 OVERwrite 493 OVERwrite? SENSe[1..n] AVERage 494 TRACe TRCMAIN, 495 COUNt 496 COUNt? INBand 497 COUNt 498 COUNt? TYPE 499 SINGLE|AVERAGING|INBAND TYPE? WAVelength P.
SCPI Command Reference Product-Specific Commands—Description Product-Specific Commands—Description :ABORt Description This command is used to stop running scan, measurement or acquisition in progress. This command is an event and has no associated *RST condition or query form. However, the equivalent of the ABORt command is performed on any acquisition in progress. Syntax :ABORt Parameter(s) None Example(s) ABOR See Also INITiate[1..n]:IMMediate INITiate[1..
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:BWAT Description This command sets the power used to calculate signal bandwidth inside a channel. For this command to be accepted, the OSA module must be in Ready state with no acquisition in progress. At *RST, value for Bandwidth at is 20.0 dB. Syntax :CALCulate[1..
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:BWAT? Description This query returns the power used to calculate signal bandwidth inside a channel. At *RST, value for Bandwidth at is 20.0 dB. Syntax :CALCulate[1..n]:BWAT? Parameter(s) None Response Syntax Response(s) PowerLevel: The response data syntax for is defined as a element. Power level for bandwidth calculation (in dB).
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:CHANnel? Description This query returns available information on a channel. *RST clears the channel list. Syntax :CALCulate[1..n]:CHANnel? Parameter(s) ChannelIndex: The program data syntax for is defined as a element. Selects the Index of channel. The maximum value for the index varies with the number of channels on the list.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:CHANnel? B=Channel Center (always in m) C=Channel Width D=Channel Width unit (m or Hz) (string) E=PowerType (PEAKSIGNAL or INTEGRATEDSIGNAL or TOTALCHANNEL ) (string) F=NoisePosition (FIXEDIEC or INBANDNF or INBAND) (string) Example(s) CALC:CHAN? 1 See Also CALCulate[1..
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:CHANnel:ADD Description Adds a new channel to list of channels. For this command to be accepted, the OSA module must be in Ready state with no acquisition in progress. This command is an event and has no associated *RST condition or query form. Syntax :CALCulate[1..n]:CHANnel:ADD,
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:CHANnel:ADD Central wavelenght of the channel being added. Range is dependent on OSA module limits. ³ Width: The program data syntax for is defined as a element. Width of the channel being added. Range: [0.008 … 400.000] nm or [1.0 … 58150.0] GHz ³ WidthUnit: The program data syntax for the first parameter is defined as a element.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:CHANnel:ADD ³ NoiseForOSNR: The program data syntax for the third parameter is defined as a element. The allowed elements for this parameter are: FIXEDIEC|INBAND|INBANDNF. Selects the Noise for OSNR for the added channel. FIXEDIEC, selects Fixed range IEC based (IEC) as the OSNR calculation method. INBAND, selects In-Band (InB) as OSNR calculation method.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:CHANnel:COUNt? Description This query returns the number of channels on the list. *RST clears the channel list. Syntax :CALCulate[1..n]:CHANnel:COUNt? Parameter(s) None Response Syntax Response(s) ChannelCount: The response data syntax for is defined as a element. Number of channels on the list. Example(s) CALCulate:CHANnel:COUNt? CALCulate:CHANnel:ADD C34,1550.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:CHANnel:DEFault: NFOSnr Description This command sets the Noise For OSNR value. Possible values for sole parameter: FIXEDIEC, INBAND or INBANDNF. At *RST, this value is FIXEDIEC. Syntax :CALCulate[1..n]:CHANnel:DEFault:NFOSnrFIXEDIEC|INBAND|INBANDNF Parameter(s) NoiseForOSNR The program data syntax for the first parameter is defined as a element.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:CHANnel:DEFault: NFOSnr? Description This query returns the calculation method to use for Noise for OSNR value. At *RST, this value is FIXEDIEC. Syntax :CALCulate[1..n]:CHANnel:DEFault:NFOSnr? Parameter(s) None Response Syntax Response(s) NoiseForOsnr: The response data syntax for is defined as a element. Display the Noise for OSNR value for the default channel.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:CHANnel:DEFault: SIGPowercalc Description This command sets the Signal Power Calculation method to apply for signal power value. Possible values for sole parameter: INTEGRATEDSIGNAL, PEAKSIGNAL or TOTALCHANNEL. At *RST, this value is INTEGRATEDSIGNAL. Syntax :CALCulate[1..
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:CHANnel:DEFault: SIGPowercalc PEAKSIGNAL, selects Peak signal power method to calculate signal power value. TOTALCHANNEL, selectsTotal channel power method to calculate signal power value. Example(s) CALC:CHAN:DEFault:SIGPowercalc INTEGRATEDSIGNAL See Also CALCulate[1..
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:CHANnel:DEFault: SIGPowercalc? Description This query returns the Signal Power Calculation. Possible returned values can be INTEGRATEDSIGNAL, PEAKSIGNAL or TOTALCHANNEL. At *RST, this value is INTEGRATEDSIGNAL. Syntax :CALCulate[1..
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:CHANnel:DEFault [:STATe] Description This command activates or deactivates the default channel. For this command to be accepted, the OSA module must be in Ready state with no acquisition in progress. At *RST, this value is 1 (activated). Syntax :CALCulate[1..n]:CHANnel:DEFault[:STATe] Parameter(s) State: The program data syntax for is defined as a element.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:CHANnel:DEFault [:STATe]? Description This query returns the state of the Activate default channel. At *RST, this value is 1 (activated). Syntax :CALCulate[1..n]:CHANnel:DEFault[:STATe]? Parameter(s) None Response Syntax Response(s) State: The response data syntax for is defined as a element.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:CHANnel:DEFault: WIDTh Description This command sets the Channel width value with unit. At *RST,this value is 100.0 GHz. Syntax :CALCulate[1..n]:CHANnel:DEFault:WIDTh,M|Hz Parameter(s) ³ ChannelWidth: The program data syntax for is defined as a element. Set the default channel width. Range: [0.008 ... 400.000] nm or [1.0 ... 58150.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:CHANnel:DEFault: WIDTh? Description This query returns the Channel width value with unit. At *RST, this value is 100.0 GHz. Syntax :CALCulate[1..n]:CHANnel:DEFault:WIDTh? Parameter(s) None Response Syntax Response(s) ChannelWidth: The response data syntax for is defined as a ” element.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:CHANnel:DELete Description This command deletes a channel from channel list. The OSA module must not be in acquisition for this command to be accepted. This command is an event and has no associated *RST condition or query form. Syntax :CALCulate[1..n]:CHANnel:DELete Parameter(s) ChannelIndex: The program data syntax for is defined as a element.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:CHANnel:DELete:ALL Description This command deletes all channels from channel list. The OSA module must not be in acquisition for this command to be accepted. This command is an event and has no associated *RST condition or query form. 462 Syntax :CALCulate[1..n]:CHANnel:DELete:ALL Parameter(s) None Example(s) CALC:CHAN:DEL:ALL See Also CALCulate[1..
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n][:IMMediate]:AUTO Description This command indicates whether or not the system automatically make a recalculation of all measurements every time a call is made to sub-system "CALC". At *RST, this value is 0 (deactivated). Syntax :CALCulate[1..n][:IMMediate]:AUTO Parameter(s) State: The program data syntax for is defined as a element.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n][:IMMediate]:AUTO? Description This query returns the current state of whether or not the system automatically make a recalculation of all measurements every time a call is made to sub-system "CALC". At *RST, this value is 0 (deactivated). Syntax :CALCulate[1..
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:PEAK[:DETEction]: LEVel Description This command sets level in relation to peak for WDM Analysis test. For this command to be accepted, the OSA module must be in Ready state with no acquisition in progress. At *RST, this value is -45.00 dBm. Syntax :CALCulate[1..
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:PEAK[:DETEction]: LEVel? Description This query returns the level in relation to peak from WDM test. At *RST, this value is -45.00 dBm. Syntax :CALCulate[1..n]:PEAK[:DETEction]:LEVel? Parameter(s) None Response Syntax Response(s) PeakDetectionLevel: The response data syntax for is defined as a element.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:POWer:OFFSet [:OUTPut] Description This command sets the Power Offset value. For this command to be accepted, the OSA module must be in Ready state with no acquisition in progress. At *RST, this value is 0.00 dB. Syntax :CALCulate[1..n]:POWer:OFFSet[:OUTPut] Parameter(s) Offset: The program data syntax for is defined as a element. Selects the Offset value. Range: [-99.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:POWer:OFFSet [:OUTPut]? Description This querry returns the Offset value At *RST, this value is 0.00 dB. Syntax :CALCulate[1..n]:POWer:OFFSet[:OUTPut]? Parameter(s) None Response Syntax Response(s) Offset: The response data syntax for is defined as a element. Display the power offset for global channel analysis parameter.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:RBW Description This command sets the RBW for OSNR. This value is used in calculation only if RBW Instrument is OFF (or 0). For this command to be accepted, the OSA module must be in Ready state with no acquisition in progress. At *RST, this value is 0.100 nm. Syntax :CALCulate[1..n]:RBW Parameter(s) RbwForOsnr: The program data syntax for is defined as a element.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:RBW? Description This query gets the value for RBW for OSNR. At *RST, this value is 0.100 nm. Syntax :CALCulate[1..n]:RBW? Parameter(s) None Response Syntax Response(s) RbwForOsnr: The response data syntax for is defined as a element. Display the RBW for OSNR for global channel analysis parameter. 470 Example(s) CALC:RBW? See Also CALCulate[1..n]:RBW CALCulate[1.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:RBW:INSTrument Description This command sets whether the application uses the Instrument RBW or the user defined RBW value. For this command to be accepted, the OSA module must be in Ready state with no acquisition in progress. At *RST, this value is 1 (or ON). Syntax :CALCulate[1..
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:RBW:INSTrument The parameter is a boolean value that determines the status of the default channel: 0- deactivates Instrument RBW (user defined RBW is used by application) 1- activates instrument RBW 472 Example(s) CALC:RBW:INSTrument ON See Also CALCulate[1..n]:RBW CALCulate[1..n]:RBW? CALCulate[1..
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:RBW:INSTrument? Description This query returns whether the application uses the instrument RBW or the user defined RBW value. At *RST, this value is 1 (or ON). Syntax :CALCulate[1..n]:RBW:INSTrument? Parameter(s) None Response Syntax Response(s) RbwInstrumentState: The response data syntax for is defined as a element.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:WAVelength:OFFSet [:OUTPut] Description This command sets the wavelength offset value. For this command to be accepted, the OSA module must be in Ready state with no acquisition in progress. At *RST, this value is 0.000 nm. Syntax :CALCulate[1..
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:WAVelength:OFFSet [:OUTPut]? Description This query returns the wavelength offset value. At *RST, this value is 0.000 nm. Syntax :CALCulate[1..n]:WAVelength:OFFSet[:OUTPut]? Parameter(s) None Response Syntax Response(s) WavelengthOffset: The response data syntax for is defined as a element. Display the wavelength offset value.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:WDM Description When used alone, this command triggers a WDM re-analysis using :CALCulate current values. Pre-condition: trace data must be present in memory (either from an acquisition or from loading a file). This command is an event and has no associated *RST condition or query form. 476 Syntax :CALCulate[1..n]:WDM Parameter(s) None Example(s) CALC:WDM See Also CALCulate[1..
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:WDM:CHANnel? Description This query returns the information pertaining to a channel. A trace must be present in memory for the command to be accepted. *RST has no effect on the WDM measurement. Syntax :CALCulate[1..n]:WDM:CHANnel? Parameter(s) ChannelIndex: The program data syntax for is defined as a element. Selects the Index of channel.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:WDM:CHANnel:COUNt? Description This query returns the number of channel results from the list. *RST has no effect on the WDM measurement. Syntax :CALCulate[1..n]:WDM:CHANnel:COUNt? Parameter(s) None Response Syntax Response(s) ChannelCount: The response data syntax for is defined as a element. Number of channel results on the list.
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:WDM:OSNR:AVERage? Description This query returns the average SNR value. *RST has no effect on the WDM measurement. Syntax :CALCulate[1..n]:WDM:OSNR:AVERage? Parameter(s) None Response Syntax Response(s) OsnrAverage: The response data syntax for is defined as a element. Average optical signal-to-noise ratio from all channels (in dB).
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:WDM:OSNR:FLATness? Description This query returns the flatness SNR value. *RST has no effect on the WDM measurement. Syntax :CALCulate[1..n]:WDM:OSNR:FLATness? Parameter(s) None Response Syntax Response(s) OsnrFlatness: The response data syntax for is defined as a element. Flatness optical signal-to-noise ratio from all channels (in dB).
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:WDM:SIGPower: AVERage? Description This query returns the average signal power for a channel. *RST has no effect on the WDM measurement. Syntax :CALCulate[1..n]:WDM:SIGPower:AVERage? Parameter(s) None Response Syntax Response(s) PowerAverage: The response data syntax for is defined as a element. Average signal power from all channels (in dBm).
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:WDM:SIGPower: FLATness? Description This query returns the flatness signal power for a channel. *RST has no effect on the WDM measurement. Syntax :CALCulate[1..n]:WDM:SIGPower:FLATness? Parameter(s) None Response Syntax Response(s) PowerFlatness: The response data syntax for is defined as a element. Flatness signal power from all channels (in dB).
SCPI Command Reference Product-Specific Commands—Description :CALCulate[1..n]:WDM:SIGPower: INTegrated? Description This query returns the integrated signal power for a channel. *RST has no effect on the WDM measurement. Syntax :CALCulate[1..n]:WDM:SIGPower:INTegrated? Parameter(s) None Response Syntax Response(s) PowerIntegrated: The response data syntax for is defined as a element. Integrated signal power from all channels (in dBm).
SCPI Command Reference Product-Specific Commands—Description :CALibration:ZERO[:IMMediate] Description This command performs a nulling operation. This command is an event and has no associated *RST condition or query form. Syntax :CALibration:ZERO[:IMMediate] Parameter(s) None Example(s) CAL:ZERO See Also INITiate[1..
SCPI Command Reference Product-Specific Commands—Description :INITiate[1..n][:IMMediate] Description This command completes one full trigger cycle, returning to IDLE on completion. The operation in progress is instrument-dependent. This command is an event and has no associated *RST condition or query form. However, the equivalent of the ABORt command is performed on any acquisition in progress. 486 Syntax :INITiate[1..
SCPI Command Reference Product-Specific Commands—Description :MMEMory[1..n]:LOAD:CONFiguratio Description This command loads a configuration file. For this command to be accepted, the OSA module must be in Ready state with no acquisition in progress. This command is an event and has no associated *RST condition or query form. However, most settings affected by this command are set to default values at *RST. Syntax :MMEMory[1..
SCPI Command Reference Product-Specific Commands—Description :MMEMory[1..n]:LOAD:OVERwrite Description This command selects, whether local data trace should be overwritten or not when loading a trace file. Attempting to load a file while the value is set to OFF will generate an error if local trace already exists in destination. For this command to be accepted, the OSA module must be in Ready state with no acquisition in progress for. At *RST, this value is OFF. Syntax :MMEMory[1..
SCPI Command Reference Product-Specific Commands—Description :MMEMory[1..n]:LOAD:OVERwrite? Description This query lets you know whether local data will be overwritten or not when loading a trace file. At *RST, this value is OFF. Syntax :MMEMory[1..n]:LOAD:OVERwrite? Parameter(s) None Response Syntax Response(s) OverwriteState: The response data syntax for is defined as a element. Local trace data overwrite state OFF/ON (0/1).
SCPI Command Reference Product-Specific Commands—Description :MMEMory[1..n]:LOAD:TRACe Description This command loads a trace. For this command to be accepted, the OSA module must be in Ready state with no acquisition in progress. *RST has no effect on traces in memory. Syntax :MMEMory[1..n]:LOAD:TRACe |TRCMAIN|, Parameter(s) ³ TracePosition: The program data syntax for the first parameter is defined as a element.
SCPI Command Reference Product-Specific Commands—Description :MMEMory[1..n]:LOAD:TRACe Selects Trace index of destination. TRCMAIN, selects Main Trace as index of destination. ³ FileName: The program data syntax for is defined as a element. The parameter can either be only the filename or the name and its path. If no path is specified, the default path is used. The default path name depends on location of driver libraries.
SCPI Command Reference Product-Specific Commands—Description :MMEMory[1..n]:STORe:CONFiguratio Description This command saves a configuration file. For this command to be accepted, the OSA module must be in Ready state with no acquisition in progress. This command is an event and has no associated *RST condition or query form. Syntax :MMEMory[1..n]:STORe:CONFiguratio Parameter(s) Filename: The program data syntax for is defined as a element.
SCPI Command Reference Product-Specific Commands—Description :MMEMory[1..n]:STORe:OVERwrite Description This command sets, whether an existing file will be overwritten when the MMEMory:STORe:OVERwrite command is used. Attempting to save a file while the value is set to OFF will generate an error if file is already present. For this command to be accepted, the OSA module must be in Ready state with no acquisition in progress. At *RST, this value is OFF. Syntax :MMEMory[1..
SCPI Command Reference Product-Specific Commands—Description :MMEMory[1..n]:STORe:OVERwrite? Description This query lets you know whether existing files already present will be overwritten when the MMEMory:STORe:OVERwrite command is used. At *RST, this value is OFF. Syntax :MMEMory[1..n]:STORe:OVERwrite? Parameter(s) None Response Syntax Response(s) OverwriteState: The response data syntax for is defined as a element.
SCPI Command Reference Product-Specific Commands—Description :MMEMory[1..n]:STORe:TRACe Description This command saves trace to a file. For this command to be accepted, the OSA module must be in Ready state with no acquisition in progress. This command is an event and has no associated *RST condition or query form. Syntax :MMEMory[1..n]:STORe:TRACeTRCMAIN, Parameter(s) ³ TracePosition: The program data syntax for the first parameter is defined as a element.
SCPI Command Reference Product-Specific Commands—Description :SENSe[1..n]:AVERage:COUNt Description Sets the number of scans that will be averaged to produce final trace. For this command to be accepted, the OSA module must be in Ready state with no acquisition in progress. At *RST, this value is 8. Syntax :SENSe[1..n]:AVERage:COUNt Parameter(s) AverageCount: The program data syntax for is defined as a element.
SCPI Command Reference Product-Specific Commands—Description :SENSe[1..n]:AVERage:COUNt? Description This query returns number of scans averaged to produce final trace.Returns 1 when average type is SINGLE. At *RST, this value is 8. Syntax :SENSe[1..n]:AVERage:COUNt? Parameter(s) None Response Syntax Response(s) AverageCount: The response data syntax for is defined as a element. Number of scans used to average for final scan.
SCPI Command Reference Product-Specific Commands—Description :SENSe[1..n]:AVERage:INBand:COUNt Description This command sets the number of In-Band scans that will be averaged to produce final trace. For this command to be accepted, the OSA module must be in Ready state with no acquisition in progress. At *RST, this value is 64. Syntax :SENSe[1..n]:AVERage:INBand:COUNt Parameter(s) InbandCount: The program data syntax for is defined as a element.
SCPI Command Reference Product-Specific Commands—Description :SENSe[1..n]:AVERage:INBand:COUNt? Description This query returns number of scans Inband to produce final trace. At *RST, this value is 64. Syntax :SENSe[1..n]:AVERage:INBand:COUNt? Parameter(s) None Response Syntax Response(s) InbandCount: The response data syntax for is defined as a element. Number of In-Band scans used to average in final scan.
SCPI Command Reference Product-Specific Commands—Description :SENSe[1..n]:AVERage:TYPE Description This command sets the acquisition type. Possible values: SINGLE, AVERAGING or INBAND. At *RST, this value is SINGLE. Syntax :SENSe[1..n]:AVERage:TYPESINGLE|AVE RAGING|INBAND Parameter(s) Type: The program data syntax for the first parameter is defined as a element. The allowed elements for this parameter are: SINGLE|AVERAGING|INBAND.
SCPI Command Reference Product-Specific Commands—Description :SENSe[1..n]:AVERage:TYPE? Description This query returns the acquisition type. Returns: SINGLE, AVERAGING or INBAND. At *RST, this value is SINGLE. Syntax :SENSe[1..n]:AVERage:TYPE? Parameter(s) None Response Syntax Response(s) Type: The response data syntax for is defined as a element.
SCPI Command Reference Product-Specific Commands—Description :SENSe[1..n]:WAVelength[:RANGe]: STARt Description This command sets the start wavelength for acquisition range. For this command to be accepted, the OSA module must be in Ready state with no acquisition in progress. At *RST, this value is set to 1530.0 nm (C-band lower limit). Syntax :SENSe[1..
SCPI Command Reference Product-Specific Commands—Description :SENSe[1..n]:WAVelength[:RANGe]: STARt Example(s) SENS:WAV:RANG:STAR 1520 NM Notes SENS:WAV:RANG:STOP value will be forced to 5.0 nm larger than SENS:WAV:RANG:STARt. See Also SENSe[1..n]:WAVelength:RANGe:STARt? SENSe[1..
SCPI Command Reference Product-Specific Commands—Description :SENSe[1..n]:WAVelength[:RANGe]: STARt? Description This query returns the start wavelength for acquisition range. At *RST, this value is set to 1530.0 nm (C-band lower limit). Syntax :SENSe[1..n]:WAVelength[:RANGe]:STARt? Parameter(s) None Response Syntax Response(s) Start: The response data syntax for is defined as a element. Minimum wavelength for acquisition range (in m or Hz).
SCPI Command Reference Product-Specific Commands—Description :SENSe[1..n]:WAVelength[:RANGe]: STOP Description This command sets the stop wavelength for acquisition range. For this command to be accepted, the OSA module must be in Ready state with no acquisition in progress. At *RST, this value is set to 1565.0 nm (C-band upper limit). Syntax :SENSe[1..
SCPI Command Reference Product-Specific Commands—Description :SENSe[1..n]:WAVelength[:RANGe]: STOP 506 Example(s) SENS:WAV:RANG:STOP 1570 NM Notes SENS:WAV:RANG:STARt value will be forced to 5.0 nm smaller than SENS:WAV:RANG:STOP. See Also SENSe[1..n]:WAVelength:RANGe:STOP? SENSe[1..
SCPI Command Reference Product-Specific Commands—Description :SENSe[1..n]:WAVelength[:RANGe]: STOP? Description This query returns the start wavelength for acquisition range. At *RST, this value is set to 1565.0 nm (C-band upper limit). Syntax :SENSe[1..n]:WAVelength[:RANGe]:STOP? Parameter(s) None Response Syntax Response(s) Stop: The response data syntax for is defined as a element. Maximum wavelength for acquisition range (in m or Hz).
SCPI Command Reference Product-Specific Commands—Description :SNUMber? Description This query returns a value indicating the serial number of the module. *RST has no effect on Serial number. Syntax :SNUMber? Parameter(s) None Response Syntax Response(s) SerialNumber: The response data syntax for is defined as a element. The response represents a string containing the serial number of the module.
SCPI Command Reference Product-Specific Commands—Description :STATus? Description This query returns a value indicating the status of the module (READY, BUSY, etc.). This command is an event and has no associated *RST condition. Syntax :STATus? Parameter(s) None Response Syntax Response(s) Status: The response data syntax for is defined as a element.
SCPI Command Reference Product-Specific Commands—Description :STATus? DEFECTIVE, means the module is defective and UNCONFIGURED, means the module is not configured.
SCPI Command Reference Product-Specific Commands—Description :TRACe[1..n][:DATA]? Description This query returns the points of a trace. *RST has no effect on traces in memory. Syntax :TRACe[1..n][:DATA]?TRCMAIN Parameter(s) TracePosition: The program data syntax for the first parameter is defined as a element. The allowed element for this parameter is TRCMAIN. Selects the Trace Index.
SCPI Command Reference Product-Specific Commands—Description :TRACe[1..n][:DATA]:PREamble? Description This query returns a trace’s header. *RST has no effect on traces in memory. Syntax :TRACe[1..n][:DATA]:PREamble?TRCMAI N Parameter(s) TracePosition: The program data syntax for the first parameter is defined as a element. The allowed element for this parameter is TRCMAIN. Selects the Trace Index.
SCPI Command Reference Product-Specific Commands—Description :TRACe[1..n][:DATA]:PREamble? A = Acquisition type B = Spectral range start (always in m) C = Spectral range stop (always in m) D = Number of scans E = Bandwidth Resolution (always in m) Example(s) TRAC:PRE? TRCMAIN See Also TRACe[1..n][:DATA]? TRACe[1..n]:INFormation? TRACe[1..
SCPI Command Reference Product-Specific Commands—Description :TRACe[1..n]:INFormation? Description This query returns all available information on a trace. *RST has no effect on traces in memory. Syntax :TRACe[1..n]:INFormation?TRCMAIN Parameter(s) TracePosition: The program data syntax for the first parameter is defined as a element. The allowed element for this parameter is TRCMAIN. Selects the Trace Index.
SCPI Command Reference Product-Specific Commands—Description :TRACe[1..n]:INFormation? A = Acquisition start date and time B = Acquisition end date and time C = Calibration date D = User or factory calibration E = Model name F = Serial number G = Software version Example(s) TRAC:INF? TRCM See Also TRACe[1..n][:DATA]? TRACe[1..
SCPI Command Reference Product-Specific Commands—Description :TRACe[1..n]:POINts? Description This query returns the number of points on a trace. *RST has no effect on traces in memory. Syntax :TRACe[1..n]:POINts?TRCMAIN Parameter(s) TracePosition: The program data syntax for the first parameter is defined as a element. The allowed element for this parameter is TRCMAIN. Selects the Trace Index.
SCPI Command Reference Product-Specific Commands—Description :UNIT[1..n]:SPECtrum Description This command sets the spectrum units. At *RST, this value is m. Syntax :UNIT[1..n]:SPECtrumM|HZ Parameter(s) Unit: The program data syntax for the first parameter is defined as a element. The allowed elements are: M|HZ. Selects the Spectral unit. Example(s) UNIT:SPEC M See Also UNIT[1..
SCPI Command Reference Product-Specific Commands—Description :UNIT[1..n]:SPECtrum? Description This query returns the current spectrum unit. At *RST, this value is m. Syntax :UNIT[1..n]:SPECtrum? Parameter(s) None Response Syntax Response(s) SpectralUnit: The response data syntax for is defined as a element. Current spectral unit. 518 Example(s) UNIT:SPECtrum? See Also UNIT[1..
C Formulas Used with Your Optical Spectrum Analyzer The following formulas are used in the various tests available with your OSA module.
Formulas Used with Your Optical Spectrum Analyzer Central Wavelength Calculation (Spectral Transmittance) Central Wavelength Calculation (Spectral Transmittance) The central wavelength is calculated using the following equation: λR + λL a = ------------------2 Where a is the central wavelength, λR is the wavelength on the right at which the power is 3 dB below the power at the nominal wavelength, and λL is the wavelength on the left at which the power is 3 dB below the power at the nominal wavelength.
Formulas Used with Your Optical Spectrum Analyzer Bandwidth Calculation (Spectral Transmittance) Bandwidth Calculation (Spectral Transmittance) Bandwidth is calculated using the following equation: b = 2∗ Min { ( λ N – λ XdBLeft ), ( λ XdBRight – λ N ) } Where b is the bandwidth at X dB, λN is the nominal wavelength, λXdBLeft is the wavelength on the left at which the power is X dB below the power at the nominal wavelength.
Index Index A acquisition averaging............... 99, 159, 179, 205, 265 real-time ........................ 99, 179, 205, 265 single ..................... 99, 159, 179, 205, 265 type56, 100, 121, 161, 177, 180, 196, 206, 228, 266 activating default channel...... 61, 126, 233, 311, 391 thresholds...................................... 69, 135 adjacent channel isolation (dB) ......... 352, 361 after-sales service ...................................... 427 analysis setup ......................
Index F L Fabry-Perot mode spacing......................... 343 fiber ends, cleaning..................................... 15 fiber ID ........................ 56, 121, 177, 196, 228 fixed range IEC based........................ 295, 338 front panel, cleaning ................................. 421 FTB-5240BP ................................................... 2 FTB-5240S ..................................................... 2 FTB-5240S-P ..................................................
Index wavelength.................................... 64, 129 online user guide....................................... 427 optimal performance .................................. 13 OSA ............................................................... 1 OSNR average.................................. 69, 304, 316 dB ... 53, 72, 119, 136, 283, 293, 302, 319, 337, 342 distance ......................... 62, 127, 300, 311 flatness .................................. 69, 304, 316 noise..............
Index specifications, product .............................. 437 status fail ....................................................... 283 pass ..................................................... 283 status bar .................................................... 14 storage requirements ................................ 421 symbols, safety.............................................. 4 T T max ........................................................ 326 T min...............................................
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MARKING REQUIREMENTS 㪖㽷尐㻑 Product Environmental protection use period (years) Logo ℶ❐ 䘾⬒≬㔳∎䞷㦮棟 ( ) 㪖㉦ This Exfo product 㦻 EXFO ℶ❐ Batterya 䟄㻯 a a. If applicable.
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