Spectrum Analyzer GSP-730 USER MANUAL REVISION 1.
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SAFETY INSTRUCTIONS Table of Contents SAFETY INSTRUCTIONS .................................................. 3 GETTING STARTED .......................................................... 7 GSP-730 Introduction ................................. 8 Appearance ............................................... 10 First Use Instructions ............................... 17 BASIC OPERATION ........................................................ 26 Frequency Settings ....................................
GSP-730 User Manual GSP-730 Dimensions .............................. 109 Declaration of Conformity ....................... 110 INDEX ..........................................................................
SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS This chapter contains important safety instructions that you must follow during operation and storage. Read the following before any operation to insure your safety and to keep the instrument in the best possible condition. Safety Symbols These safety symbols may appear in this manual or on the instrument. WARNING Warning: Identifies conditions or practices that could result in injury or loss of life.
GSP-730 User Manual Safety Guidelines General Guideline CAUTION Do not place any heavy object on the instrument. Avoid severe impact or rough handling that leads to damaging the instrument. Do not discharge static electricity to the instrument. Use only mating connectors, not bare wires, for the terminals. Ensure signals to the RF input do not exceed +30dBm/±25V DC. Do not block the cooling fan opening. Do not disassemble the instrument unless you are qualified.
SAFETY INSTRUCTIONS Cleaning Operation Environment Disconnect the power cord before cleaning. Use a soft cloth dampened in a solution of mild detergent and water. Do not spray any liquid. Do not use chemicals containing harsh material such as benzene, toluene, xylene, and acetone.
GSP-730 User Manual Power cord for the United Kingdom When using the instrument in the United Kingdom, make sure the power cord meets the following safety instructions.
GETTING STARTED GETTING STARTED This chapter provides a brief overview of the GSP-730, the package contents, instructions for first time use and an introduction to the front panel, rear panel and GUI. GSP-730 Introduction ....................................................... 8 Main Features ............................................. 8 Package Contents........................................ 9 Appearance .................................................................... 10 GSP-730 Front Panel ......
GSP-730 User Manual GSP-730 Introduction The GSP-730 is a low-cost, basic spectrum analyzer. The GSP-730 has all the basic features of our more advanced models, but in a smaller package, designed especially for education. Main Features Performance Features Interface 8 150kHz~3GHz bandwidth 100kHz resolution Autoset with automatic floor level and span.
GETTING STARTED Package Contents Check the contents before using the GSP-730.
GSP-730 User Manual Appearance GSP-730 Front Panel LCD Display Function Keys GSP-730 Menu keys Spectrum Analyzer 150 kHz 3 GHz Hardcopy key Frequency Marker BW Preset Span Peak Search Trace Hardcopy Scroll wheel F1 F2 Amplitude Meas Display Hardcopy Setup Autoset Limit Line Memory System F3 F4 F5 7 8 9 GHz / Sec 4 5 6 MHz / mSec 1 2 3 Arrow keys Enter BK SP 0 F6 kHz / mSec dB RF INPUT 50 Ω DC ±25V MAX. +30dBm MAX.
GETTING STARTED Amplitude Amplitude Autoset Autoset Marker Marker Peak Search Meas Limit Line BW Trace Peak Search Meas Limit Line BW Trace Display Display Memory Memory Sets the amplitude reference level, scale and amplitude units. Automatically searches the peak signal with maximum amplitude and displays it with appropriate horizontal and vertical scales. The Marker key is used to configure the markers, trace markers as well as other related functionality.
GSP-730 User Manual Preset Hardcopy Hardcopy setup System Preset Hardcopy Hardcopy Setup System The Preset key will restore the spectrum analyzer to the factory settings. The hardcopy key is a quick save key that will save a screen-shot of the display. Configures the hardcopy options. The System key is used to configure the RS232 interface, language, update the firmware as well as other system options. Power key Turns the instrument on/off. Scroll wheel Edit values, select listed items.
GETTING STARTED RF input terminal RF INPUT 50 Ω RF input port. Accepts RF inputs. DC ±25V MAX. +30dBm MAX. Numeric keypad Maximum input: +30dBm (+20dBm measurable) Input impedance: 50Ω Maximum DC voltage: ±25V N-type: female 7 8 9 GHz / Sec 4 5 6 MHz / mSec 1 2 3 kHz / mSec 0 USB A, Micro SD BK SP dB Enter The numeric keypad is used to enter vales and parameters. It is often used in conjunction with the arrow keys and scroll wheel.
GSP-730 User Manual Rear Panel Fan USB B port RS232 port VGA port Security slot Power socket RS232 RS232 9 pin DSUB port. USB B USB B Device port. USB 1.1/2.0 VGA VGA video-out port. Supports SVGA (480X640) Fan Power Socket Power Socket: 100~240V, 50/60Hz. 15W Max Security Slot Kensington-type security slot.
GETTING STARTED Display Marker information Function menu Reference level Traces and waveforms Soft menu keys Frequency/ Bandwidth settings Entry / Message area Trace icons Reference level Displays the reference level. For details, see page 34. Marker information Displays marker information. For details see page 38. Function menu Displays the current function menu. Soft menu keys The Soft menu keys are associated with the F1 to F6 function keys to the right of the display.
GSP-730 User Manual Frequency/ Bandwidth settings Displays the Start, Center and Stop frequencies, RBW, Span and Sweep settings. Trace and waveforms Main display showing the traces (page 62), limit lines (57) and marker positions (38).
GETTING STARTED First Time Use Instructions Use the procedures below when first using the GSP-730 to tilt the stand, power up the instrument, update the firmware and restore the unit back to the default settings. Lastly, the Conventions sections will introduce you to the basic operating conventions used throughout the user manual. Tilting the Stand Description The GSP-730 has two adjustable tabs at the front that can be used to position the instrument into two preset orientations.
GSP-730 User Manual Power UP and Down Power Up 1. Insert the AC power cord into the power socket. 2. Press the power button to turn the GSP-730 on. 3. The GSP-730 will begin to boot up in under a few seconds. Note Power Down 18 If system fails to start, please see your local GW Instek distributor. 1. Press the power button to power down.
GETTING STARTED Software Update Description The GSP-730 allows the software to be updated by end-users. Before using the GSP-730, please check the GW Instek website or ask your local distributor for the latest software. The update file, MAIN1.BIN, must be placed in the root directory of a USB flash drive. System version Before updating the software, please check the software version. 1. Press System >Information[F4]. 2. The system version is displayed on the SW Ver[F4] icon.
GSP-730 User Manual 5. Reboot the system when the update procedure has finished by cycling the power button. 6. Check the software version again to confirm the update procedure. Note The upgrade process may take a few minutes. USB Driver Installation Description If the type B USB port on the rear panel is to be used for remote control, then the USB driver must be installed. The USB driver is located in the CD that accompanied this manual. Driver installation 1. Ensure the GSP-730 is turned on. 2.
GETTING STARTED The GSP-730 should be shown under the Ports (COM & LPT) node: Note If the USB driver installation fails, you can try to manually install the driver. You can tell that the driver hasn’t been installed if you see the AT91USBSerial icon in the ports node. Right clicking this icon will allow you to manually install the GSP-730.ini driver. Restoring Default Settings Description Steps The factory default settings can be easily restored using the Preset key on the front panel.
GSP-730 User Manual Conventions The following conventions are used throughout the user manual. Read the conventions below for a basic grasp of how to operate the GSP-730 menu system and front panel keys. Soft Menu keys The F1 to F6 function keys on the right side of the display correspond directly to the softmenu keys on their left.
GETTING STARTED Toggle State Pressing this menu key will toggle the state. Notice that any soft-menu key that can be toggled will have the active parameter underlined. Toggle State & Input Parameter Pressing this menu key will allow you to toggle the state of the function between on and off. When in the on-state, the parameter value can be manually edited. Use the numeric keypad to enter the new value or use the scroll wheel to increment/decrement the current value.
GSP-730 User Manual Return to the Start of a Menu Tree. When you have navigated down a menu tree and you wish to return to the start of the menu tree, simply press the same Menu again. For example if you pressed: Trace > More[F6] > Min Hold[F2], simply press Trace of the Trace menu. again to return to the start Active Function Pressing this type of menu key will activate that function. The menu key will be highlighted to show it is the active function.
GETTING STARTED Using the numeric keypad When prompted to enter a parameter, use the number keys (0~9), the decimal key (.) and the minus key (-) to enter a value. After a value has been entered, the unit keys can be used to select the units. The value of the parameter is shown at the bottom of the screen as it is edited. Ref:-30dBm Edited parameter Back Space Use the backspace key to delete the last character or number entered. Using the scroll wheel Use the scroll wheel to alter the current value.
GSP-730 User Manual BASIC OPERATION Frequency Settings .......................................................... 28 Center Frequency ...................................... 28 Start and Stop Frequency .......................... 29 Center Frequency Step .............................. 30 Span Settings ................................................................. 31 Span ......................................................... 31 Full Span ...................................................
BASIC OPERATION Measurement ................................................................. 50 Channel Analysis Overview ....................... 50 Limit Line Testing .......................................................... 57 Activate a Limit Line ................................. 57 Creating a Limit (Point by Point)............... 58 Bandwidth ..................................................................... 61 Resolution Bandwidth Setting (RBW) ........ 61 Trace .................................
GSP-730 User Manual Frequency Settings Center Frequency Description Operation The center frequency function sets the center frequency and centers the display to the center frequency. 1. Press Frequency >Center[F1] and enter the frequency and unit. Range: Default Display Set center frequency 28 0kHz~3GHz 1.
BASIC OPERATION Start and Stop Frequency Description Operation The start/stop frequency function will set the start and stop frequency of the span. 1. To set the start frequency, press Frequency > Start[F2] and enter the frequency and unit. 2. To set the stop frequency, press Frequency > Stop[F3] and enter the frequency and unit.
GSP-730 User Manual Center Frequency Step Description The Step function sets the step size of the center frequency when using the arrow keys. When the arrow keys are used to alter the center frequency, each press will move the center frequency by the step size specified by the Step function. By default, the center frequency step size is equal to 10% of the span. Operation 1. Press Frequency > Step[F4] and set the center frequency step size.
BASIC OPERATION Span Settings Span Description The Span function will set the frequency range of the sweep. The sweep will be centered around the center frequency. Setting the span will alter the start and stop frequencies. Operation 1. Press Span > Span[F1] and enter the span frequency range and unit.
GSP-730 User Manual Full Span Description The Full Span function will set the span to the full frequency range. This function will set the start and stop frequencies to 0Hz and 3GHz respectively. Operation 1. Press Span > Full Span[F2]. Zero Span Description Operation The Zero Span function will set the frequency range of the sweep to 0Hz and fixes the start and stop frequencies to the center frequency.
BASIC OPERATION Display Time domain 0Hz Span Example: Amplitude modulation Note The measurement functions such as ACPR and OCBW are not available with the zero span setting: Last Span Description Operation The last span function returns the spectrum analyzer to the previous span settings. 1. Press Span > Last Span[F4].
GSP-730 User Manual Amplitude Settings The vertical display scale is defined by the reference level amplitude, attenuation, scale and external gain/loss. Reference Level Description Operation The reference level defines the absolute level of the amplitude on the top graticule in voltage or power. 1. Press Amplitude > Ref. Level[F1] and enter the reference level amplitude.
BASIC OPERATION Amplitude Units Description The amplitude units can be set from dBm, dBmV or dBuV. 1. Press Amplitude > Units …[F3] to change the amplitude units. Units: dBm, dBmV, dBuV Scale/Div Description Operation Sets the logarithmic units for the vertical divisions. 1. Press Amplitude > Scale[F2] repeatedly to select the vertical division units.
GSP-730 User Manual Autoset The Autoset function searches the peak signals and picks the signal peak with the maximum amplitude, and then shows it in the display. Using Autoset Operation Autoset Range 1. Press Autoset Amplitude: Span: > Autoset[F1]. Over the full amplitude range. Over the full span range.
BASIC OPERATION Note RBW setting is reset to Auto when the Autoset function is used. Limiting the Autoset Vertical Search Range Description Operation You can set the amplitude floor so that the signals lower than the setting will be ignored by the Autoset search. 1. Press Autoset > Amp.Floor[F2] and switch the range from Auto to Man. 1. Enter the amplitude limit with the number pad and Enter key. Range: Note −50 to +20dBm See page 35 for setting the amplitude units.
GSP-730 User Manual Marker A Marker shows the frequency and amplitude of a waveform point. The GSP-730 can activate up to 5 markers or marker pairs simultaneously. The marker table and peak table functions help editing and viewing multiple markers in a single display. The delta marker function allows you to see the frequency and amplitude differences between reference markers.
BASIC OPERATION Activating a Marker There are two basic marker types, normal markers and delta markers. Normal markers are used to measure the frequency/time or amplitude of a point on the trace. Delta markers are used to measure the difference between a reference point and a selected point on the trace. Activate a Normal Marker Operation 1. Press Marker > Marker[F1] and select a marker number. Marker: 1~5 2. Press [F2] to turn the selected marker on. 3.
GSP-730 User Manual Activate a Delta Marker Description Delta markers are marker pairs that measure the difference in frequency and amplitude between a reference marker and a delta marker. When delta markers are activated, the reference and delta marker appear at the position of the selected marker, or in the center of the display if the selected marker has not yet be activated. The marker measurement is located at the top of the display, under the “normal marker” measurement.
BASIC OPERATION Delta maker No., Frequency, Amplitude Delta Marker Move Marker Manually Operation 1. Press Marker > Marker[F1] and select a marker number. 2. Use the left/right arrow keys to move the marker one screen division at a time or the use the scroll wheel to move the marker in fine increments (one pixel at a time). 3. Alternatively, the numeric keypad can be used to directly enter the frequency of the marker position.
GSP-730 User Manual Move Marker to Preset Locations Preset conditions The currently selected marker (normal marker or delta marker) can be moved to a number of preset positions: Center: Peak Start: Stop: Step: Ref. Level: Note Move to center frequency. Move to the highest peak. Move to start frequency. Move to stop frequency. Move to step frequency. Move to reference level amplitude. When a marker is moved to a preset position the span and other settings may be automatically changed.
BASIC OPERATION Move Marker to Trace Description Operation The Marker Trace function moves the selected marker to the currently active trace. 1. Press Marker > Marker[F1] and select a marker number. 2. Press More[F6]>Marker Trace and select a trace to assign the selected marker to. If Auto is selected, the selected marker is automatically assigned a trace. Marker Trace: Auto, A, B, C 3. In the example below, marker 1 is set to trace B.
GSP-730 User Manual Turn All Markers On or Off Description All markers that have been activated, both normal and delta markers, can be turned off at the same time with the All Mrk Off function. Operation Press Marker > Marker[F1] >More[F6]>All Mrk Off[F3] and turn all the markers off. Show Markers in Table Description Operation The GSP-730 has a Marker Table function to show all the active markers and measurements at once. 1.
BASIC OPERATION Edit Markers in Marker Table Description While the Marker Table function is the active function, the position of each marker and delta marker can be edited within the marker table. 1. Use the arrow keys to move the cursor to the frequency column of the desired marker. Cursor 2. Enter the new position of the marker using the keypad and units keys.
GSP-730 User Manual Peak Search The Peak Search key is used to find trace peaks. The currently active marker is used in conjunction with the peak functions to mark the peaks that are found. Peaks can be sorted by frequency or amplitude in the peak table. Move Marker to Peak Description Operation Move the active marker to the highest peak. The highest peak can be either found once or continuously. 1. Press Marker > Marker[F1] and select a marker number. 2. Press Search >Peak Search[F1].
BASIC OPERATION Search for Peaks Description The Search key can be used to search for a number of different peaks. Peak Search Next Peak: Searches for next highest peak visible on the display. Next Peak Right: Searches for the next peak to the right of the marker. Next Peak Left: Searches for the next peak to the left of the marker. Min Search: Searches for the lowest peak. Operation Peak 1. Press Marker > Select Marker[F1] and select a marker number. 2.
GSP-730 User Manual Example: Next Peak Right Example: Next Peak Left Peak Table Description Operation 48 The Peak Table function will display up to 5 peaks. The amplitude and frequency for each peak is listed. 1. Press Search >More [F6]>Peak Table[F1] and turn the peak table on.
BASIC OPERATION 2. Press Peak Sort[F2] and set the sorting type: Sort by frequency in ascending order. Sort by amplitude in ascending order. Freq: Amp: Display The bottom-half of the screen shows the peak table with the peak marker no., frequency and amplitude.
GSP-730 User Manual Measurement This section describes how to use the automatic measurement modes. The GSP-730 includes the following measurements: ACPR → from page 51. OCBW → from page 54. Channel Analysis Overview Description Channel analysis measurement includes ACPR (adjacent channel power) and OCBW (occupied bandwidth) measurements. Parameters Channel bandwidth Channel Space Adjacent channel bandwidth 1 & 2 50 The frequency bandwidth the target channel occupies.
BASIC OPERATION Adjacent channel offset The frequency distance 1~2 between the adjacent channels and main channel. Range: 1 Between 0Hz~3GHz (0Hz excepted) OCBW% The ratio of occupied bandwidth to the amount of power consumed. Range: 0% to 100%, 0.1% resolution. ACPR Description Adjacent channel power refers to the amount of power leaked to the adjacent channel from the main channel. This measurement is a ratio of the main channel power to power in the adjacent channel.
GSP-730 User Manual disabled. 2. The display splits into two screens. The top screen shows the sweep waveform. The bottom screen shows the ACPR settings and measurement results in real time. Turn ACPR off to return back to the normal mode. Channel setup Measurements 3. Press Channel Setup…[F1] and set the following: Main CH BW[F1] Main CH Space[F2] Note The main channel bandwidth and space settings are shown in the setup area at the bottom of the screen, not on the soft-key icon.
BASIC OPERATION Operation: Setting up the adjacent channel(s) 1. Press ADJCH Setup…[F3] to setup the adjacent channels: Adj CH BW 1[F1] Adj CH Offs 1[F2] Adj CH BW 2[F3] Adj CH Offs 2[F4] Sets the bandwidth of the 1st adjacent channel. Sets the channel offset of the 1st adjacent channel. Sets the bandwidth of the 2nd adjacent channel. Sets the channel offset of the 2nd adjacent channel.
GSP-730 User Manual OCBW Description Occupied bandwidth measurements are used to measure the power of the occupied channel as a percentage to the power of the channel. Example OCBW CH BW Operation: Setting up the main channel 1. Press Meas > OCBW %[F3] and turn OCBW on. Any other measurement mode will automatically be disabled. 2. The display splits into two screens. The top shows the channel bandwidth. The bottom screen shows the OCBW measurement results in real time.
BASIC OPERATION CH BW Channel power and OCBW power results 3. Press Channel Setup…[F1] and set the following: Main CH BW[F1] Main CH Space[F2] Note Set the bandwidth of the main channel. Specify the channel spacing. The main channel bandwidth and space settings are shown in the setup area at the bottom of the screen, not on the soft-key icon.
GSP-730 User Manual Move Channels Up/Down 1. Press Meas again or press Return[F6] repeatedly to return to the start of the Measure menu tree. 2. Press CH Up[F5] to go to the next main channel. 3. Press CH Down[F6] to go to the previous main channel. Note 56 The channel space (Main CH Space) setting determines where the next main channel is located.
BASIC OPERATION Limit Line Testing The Limit Line function is used to set the upper or lower amplitude limits over the entire frequency range. The limit lines can be used to detect whether the input signal is above, below or within the limit lines. The limit lines can be manually edited using 10 frequency points from the start to the stop frequencies. To save and recall limit lines, please see page 73. Activate a Limit Line Operation 1. Press Limit Line to enter the Limit Line menu. 2.
GSP-730 User Manual Creating a Limit (Point by Point) Description Operation Create a limit manually, point by point. Ten manually selected frequency points can be used to create the upper or lower limit line. 1. Press Limit Line > Limit[F1] and select the limit line you wish to edit. Limit: High, Low 2. Press Edit Table[F2], and turn the edit table on. The GSP-730 is split into two screens.
BASIC OPERATION frequency column of the desired point. Cursor 4. Enter the new frequency and amplitude of the point using the keypad and the unit keys. 5. Repeat steps 3-5 for the remaining points (A maximum of ten points). 6. To delete the selected point, press Delete [F3]. 7. To delete all the points, press Delete All… [F4]. The points will revert to their default frequency and amplitude values. 8. To delete a point from the editing table, press Delete.
GSP-730 User Manual Pass: Upper limit Lower limit Note Operation Fail: Upper limit Lower limit Before pass/fail testing can begin, limit lines for the upper and/or lower limits must first be saved and activated. See the page 57. 1. Press Limit Line >Pass/Fail[F4] to turn the testing on or off. 2. The test result is updated in real-time at the bottom of the display. Pass: Fail: Note At least one limit line (high or low) must be turned on to enable testing.
BASIC OPERATION Bandwidth BW key sets the resolution bandwidth (RBW). The resolution bandwidth and the sweep time are related. Please take into account how the sweep time is effected by the resolution bandwidth. Resolution Bandwidth Setting (RBW) Description Operation The RBW (Resolution Bandwidth) defines the width of the IF (intermediate frequency) filter that is used to separate signal peaks from one another. The narrower the RBW, the greater the capability to separate signals at close frequencies.
GSP-730 User Manual Trace The GSP-730 is able to set the parameters of up to 3 different traces on the display at once. Each trace is represented by a different color and is updated with each sweep. To save or recall traces to/from memory, see page 71. Selecting a Trace Description Each trace (A, B, C) is represented by a different color. Trace A is green, trace B is orange and trace C is yellow. When activated, an icon for each trace color and function is shown at the bottom of the display.
BASIC OPERATION Peak Hold Min Hold View will hold the selected trace and stop updating the trace data for the selected trace. Pressing View[F4] will display the trace data that was cleared using the Blank[F5] key. View Clears the selected trace from the display and stores trace data. The trace data can be restored by pressing View[F4]. Blank Operation 1. Press The maximum or minimum points are maintained for the selected trace.
GSP-730 User Manual Trace Math Description Performs trace math from two traces (A, B) and stores the results in trace A or swaps the data from trace A to trace B. Math functions A <--> B Swaps the data from trace A to B and vice versa. A + B -> A Adds trace A and B and stores the result in trace A. A – B -> A Subtracts trace B from trace and stores the result in trace A. A + const ->A Adds an offset to trace A. A – const ->A Subtracts an offset from trace A. Operation 1.
BASIC OPERATION Average Trace Description Operation The Average function averages the currently selected trace for a user-defined number of times before it is displayed. This feature smoothes the noise level, but has the drawback of slowing down the display update rate. 1. Press Trace > More[F6] and toggle Avg on. 2. Set the number of averages.
GSP-730 User Manual Example: Average:Off Average: On (8) 66
BASIC OPERATION Display The Display key configures the basic display settings as well as the split screen modes. Adjusting the LCD Brightness Description Operation The LCD brightness levels can be adjusted to five pre-set levels. 1. Press Display > LCD Dimmer[F1] and use either the number pad, the scroll wheel or arrow keys to set the brightness. Setting a Display Line (Reference Level Line) Description Operation The Display Line function is used to superimpose a reference level line over the traces.
GSP-730 User Manual Using the Video Out Port Description The GSP-730 has a dedicated VGA terminal to output the display to an external monitor. The video output is always on. Output resolution Operation 480 x 640 (fixed) 1. Connect an external monitor to the rear panel VGA terminal. Split Spectrum View Description The split spectrum view is able to view two different sweep ranges on the display at the same time using a split screen view.
BASIC OPERATION Split spectrum functions Half-Upper Half-Upper will put the spectrum analyzer into split screen mode. It will make the top sweep the active sweep and pause the bottom sweep. When Half-Upper is on, only the upper sweep parameters can be edited. Half-Lower Half-Lower will put the spectrum analyzer into split screen mode. It will make the bottom sweep the active sweep and pause the top sweep. When Half-Lower is on, only the lower sweep settings can be edited.
GSP-730 User Manual Operation 1. Press Display >Half-Upper[F4] or Half-Lower[F5] or Alternate Sweep[F6] to enable the split spectrum view. Turning Half-Upper on will automatically turn Half-Lower off. Turning Half –Lower on will automatically turn Half-Upper off . If Alternate Sweep is turned on, each sweep will alternate, but only the upper sweep parameters can be edited. 2. To return to a full-screen, single spectrum display, press Full Display[F2].
BASIC OPERATION Save/Recall Files The GSP-730 can save and recall setup data, trace data and limit line data to and from internal memory. There are five memory locations for each save file type. These files cannot be saved to USB. The Hardcopy key can be used to save image files to a USB flash drive. Save/Recall Setup Description Setup data contains all the data necessary to recall the state of the GSP-730 to known state.
GSP-730 User Manual Save/Recall Trace Data Description The trace data can be saved/recalled for any of the A, B or C traces to/from one of 5 pre-set internal memory locations. The trace data cannot be recalled or saved to USB. When saving or recalling trace data from a split spectrum, only the active spectrum is saved/recalled. Save 1. To save the current trace data, press Save Trace Data..[F3] Memory > 2. Press Source Trace[F1] and select the source: Source: A, B, C 3.
BASIC OPERATION 8. Press Start[F5] to recall the selected trace data. Save/Recall Limit Lines Description Save Upper and lower limit lines can be saved to one of 5 pre-set internal memory locations. The limit line data cannot be saved to USB. 9. To save the current upper and lower limit lines, press Memory > Limitln to[F5] and choose a memory location to save to with the arrow keys. Limit line: 1~5 10. Press Limitln to[F5] again to execute the save. Recall 11.
GSP-730 User Manual Operation 1. Insert a USB flash drive into the USB port. 2. Press Hardcopy and the image file will begin saving. Wait a few moments for the file to save. When the file has finished saving, “Screen Saved OK” will appear at the bottom of the display. Note The file name will be automatically created in the following format: File name: SCRXX.bmp Where XX is a number that is incremented each time the file is saved.
BASIC OPERATION Note The next time the Hardcopy key is pressed, the image will be saved using the settings above. Load Default Settings Description Operation Note The Preset key is used to load the default settings. The default settings are listed in the appendix on page 105. 1. Press Preset . The system will load the preset settings and the screen will update with the new settings. The default settings cannot be changed.
GSP-730 User Manual System Settings System Information The System Information displays the following: Description Serial Number: HW Version: FW Version: SW Version: Language: Operation XX digit serial number Hardware version Firmware version Software version Shows the language number as seen in the System>Language menu. 1. Press System >Information[F4] to display the system information. The system information will be displayed on the system menu soft-keys.
BASIC OPERATION Operation 1. Press System >Language…[F3] to bring up the Language menu. 2. Choose a system language. The language number is the number that will be displayed in the system information.
GSP-730 User Manual REMOTE CONTROL This chapter describes basic configuration of IEEE488.2 based remote control. For a command list, refer to the programming manual, downloadable from GW Instek website, www.gwinstek.com Interface Configuration ................................................... 79 Configure Remote Interface ...................... 79 Remote Control Function Check ................ 80 Command Syntax ............................................................ 81 Command List ................
REMOTE CONTROL Interface Configuration Configure Remote Interface USB configuration RS232 configuration Description PC side connector Type A, host GSP side connector Rear panel Type B, slave Speed 1.1/2.0 (full speed) PC side connector RS232 male port GSP side connector RS232 female port Baud Rate: 9600, 19200, 38400, 57600, 115200. Parity: None, Even, Odd, Space, Mark, Multidrop. Stop bit: 1, 1.5, 2.
GSP-730 User Manual Panel operation 1. USB Connection: Connect a USB cable from the PC to the rear panel USB B port. RS232 Connection: Connect an RS232C cable from the PC to the rear panel RS232 port. 2. Press System >Serial Port…[F1]> Serial[F1] to enter the remote configuration. 3. Set the following RS-232 settings using the arrow keys: Baud Rate[F1]: Parity[F2]: Stop Bit[F3]: Data[F4]: 9600, 19200, 38400, 57600, 115200. None, Even, Odd, Space, Mark, Multidrop. 1, 1.5, 2.
REMOTE CONTROL This should return the Manufacturer, Model number, Serial number, and Firmware version in the following format. GW-INSTEK, GSP-730, XXXXXXXX, V.VV Manufacturer: GW-INSTEK Model number : GSP-730 Serial number : XXXXXXXXXXXX Firmware version : V.VV Note For further details or if you have trouble running this function check, please see the programming manual, available on the GW Instek web site @ www.gwinstek.com. Command Syntax Compatible Standard Command Structure IEEE488.
GSP-730 User Manual There are a number of different instrument commands and queries. A command sends instructions or data to the unit and a query receives data or status information from the unit. Command types Command types Command Format Single Command A single command with/without a parameter Example meas:freq:cen 100 MHz Query A query is a simple or compound command followed by a question mark (?). A parameter (data) is returned. Example meas:freq:cen? Meas:freq:cen 1 1. 2. 3.
REMOTE CONTROL + unit 2.5 mhz Unit = kHz, MHz, GHz. Note: The unit can be omitted (defaults to currently set unit). + unit -30 dBm Unit = dBm, dBmV, dBuV Note: The unit can be omitted (defaults to currently set unit). NR3 +unit 30.0 dBm Note: The unit can be omitted. (Unit defaults to current unit) { -92, -91, ……., -89, -92, -92, -91 } CSV data that represents each point in a trace. Message Terminator LF ASCII string data.
GSP-730 User Manual Command List IEEE488.2 Standard Commands *IDN? ........................................................................................ 86 Sweep Commands si ................................................................................................. 86 sn ................................................................................................ 86 ts .................................................................................................
REMOTE CONTROL meas:tra:avg:on ........................................................................ 95 meas:tra:avg:off........................................................................ 95 meas:tra:read ............................................................................ 96 Power measurement commands meas:acpr .................................................................................. 96 meas:acpr:lower? .....................................................................
GSP-730 User Manual IEEE488.2 Standard Commands *IDN? ........................................................................................ 86 *IDN? Description Query Queries the manufacturer, model number, serial number, and firmware version of the instrument. Query Syntax *IDN? Return parameter Returns the instrument identification as a string in the following format: GW-INSTEK, GSP-730, XXXXXXXX, V.
REMOTE CONTROL ts Set Description Resets the sweep and starts it once (i.e., sweeps one time). Example ts Frequency Commands meas:freq:cen ........................................................................... 87 meas:freq:st............................................................................... 87 meas:freq:stp ............................................................................ 88 Set meas:freq:cen Query Description Sets or queries the center frequency.
GSP-730 User Manual Parameter Return parameter Example Start frequency Returns the start frequency and unit meas:freq:st 100 mhz Sets the start frequency to 100MHz Query Example meas:freq:st? > 100000 kHz Set meas:freq:stp Query Description Sets or queries the stop frequency.
REMOTE CONTROL Parameter Return parameter Example Span frequency range Returns the span and unit meas:span 10 mhz Sets the span to 10MHz Query Example meas:span? > 10000.0 kHz meas:span:full Set Description Sets the span to the full span. Syntax meas:span:full Amplitude Commands meas:refl:unit ............................................................................ 89 meas:refl ....................................................................................
GSP-730 User Manual Syntax meas:refl Query Syntax meas:refl? Parameter Return parameter Example Reference level in the currently selected unit (from the meas:refl:unit command). Returns reference level and unit. meas:refl 10 Sets the reference level to 10 dBm (for unit = dBm). Query Example Meas:refl? >10 dBm Marker and Peak Search Commands meas:mark:on ........................................................................... 90 meas:mark:off ...............................
REMOTE CONTROL Example meas:mark on 1 Turns marker 1 on. Query Example Meas:mark 1? >OFF meas:mark:off Set Description Sets which markers are turned off. Syntax meas:mark:off {|all} Parameter All Example meas:mark off 1 Marker number 1~ 5. All markers. Turns marker 1 off. meas:mark:norm Set Description Sets the selected marker to normal mode. Syntax meas:mark:norm Parameter Example meas:mark:norm 1 Marker number 1~ 5. Sets marker 1 to normal mode.
GSP-730 User Manual Return parameter Example Returns the frequency and unit of the selected marker. meas:mark:norm:freq 1? >1.5GHz. Set meas:mark:norm:level? Query Description Queries the amplitude of the selected normal marker. Query syntax meas:mark:norm:level ? Parameter Return parameter Example Marker number 1~ 5. Returns the amplitude and unit of the selected marker. meas:mark:norm:level 1? >10.0dBm.
REMOTE CONTROL Parameter Return parameter Example Marker number 1~ 5. Returns the relative frequency and unit of the selected delta marker. meas:mark:norm:freq 1? >12.0kHz. Set meas:mark:delta:level? Query Description Queries the amplitude of the selected delta marker. Query syntax meas:mark:delta:level ? Parameter Return parameter Example Marker number 1~ 5. Returns the amplitude and unit of the selected delta marker. meas:mark:delta:level 1? >10.0dBm.
GSP-730 User Manual meas:mark:tonp Set Description Moves the selected normal or delta marker to the next peak. Syntax meas:mark:tonp Parameter Example meas:mark:tono 1 Marker number 1~ 5. Moves marker 1 to the next peak. meas:mark:trace Set Description Sets the selected marker to the selected trace. Syntax meas:mark:topeak Parameter Example meas:mark:trace 1 2 Marker number 1~ 5.
REMOTE CONTROL Parameter Example 1 2 3 1 2 3 4 5 Trace A Trace B Trace C Clear and write mode Peak hold mode View mode Blank mode Minimum hold mode meas:tra 1 1 Sets trace A to clear and write mode. meas:tra:avg:on Set Description Turns the average function on and sets the number of averages for the slected trace. Syntax meas:tra:avg:on Parameter Example 1 2 3 4~20 Trace A Trace B Trace C Number of averages.
GSP-730 User Manual Set meas:tra:read Query Description Returns the all the trace data for the selected trace. Query syntax meas:tra:read? Parameter Return parameter Example 1 2 3 all Trace A Trace B Trace C All traces Comma separated data values encapsulated in brackets. i.e., {-92, -91, -90, ………-81} meas:tra:read? 1 >{ -92, -91, -90, -90, -90, -88, ……., -89, -92, -92, -91 } Returns the trace data for the selected trace(s).
REMOTE CONTROL Query Syntax meas:acpr? Parameter/ on Return parameter off Example ACPR mode = on ACPR mode = off meas:acpr on Turns the ACPR function on. Set meas:acpr:lower? Query Description Returns the lower ACPR measurement result for the selected channel offset (offset 1 or 2). Query syntax meas:acpr:lower? {1|2} Parameter 1 2 Return parameter Example Channel offset 1 Channel offset 2 Returns the ACPR measurement result. meas:acpr:lower? 1 >6.
GSP-730 User Manual Syntax meas:ocbw {on|off } Query Syntax meas:ocbw? Parameter/ On Return parameter Off Example OCBW mode = on OCBW mode = off meas:ocbw on Turns the OCBW function on. Set meas:ocbw:bw? Query Description Returns the OCBW in kHz. Query syntax meas:ocbw:bw? Return parameter Example Returns the OCBW in kHz meas:ocbw:bw? >4000kHz Set meas:ocbw:chpw? Query Description Returns the channel power in the current unit.
REMOTE CONTROL Syntax meas:lmtline:passfail {on|off } Query Syntax meas:lmtline:passfail Parameter on off Return parameter 0 1 Query example Turns the pass/fail test on. Turns the pass/faill test off. Fail Pass meas:lmtline:passfail? >0 meas:lmtline:on Description Turns the limit lines on. Syntax meas:lmtline:on meas:lmtline:off Description Turns the limit lines off. Syntax meas:lmtline:off Set Set BW Commands con:rbw:auto ..................................................................
GSP-730 User Manual con:rbw? Query Description Returns the RBW. Query Syntax con:rbw? Return parameter Example 0 1 2 3 30kHz 100kHz 300kHz 1MHz con:rbw? >1 con:rbw:man Set Description Sets the RBW for manual mode. Syntax con:rbw:man {0|1|2|3} Parameter Example con:rbw:man 1 1 2 3 100kHz 300kHz 1MHz Sets the RBW to 100kHz. con:rbw:mode? Description Query Returns the RBW mode.
REMOTE CONTROL con:swt? Description Query Returns the sweep time in milliseconds. Query Syntax con:swt? Return parameter Example Con:swt? >1500 Display Commands con:disp:split:upper ............................................................... 101 con:disp:split:lower ............................................................... 101 con:disp:split:alt ..................................................................... 101 con:disp:split:full ...............................................
GSP-730 User Manual con:disp:split:full Set Description Returns the spectrum analyzer to single window mode. The upper window is used as the active window. Syntax con:disp:split:full Preset Commands con:preset................................................................................102 con:preset Set Description Loads the factory default settings. This is the equivalent to pressing the Preset key. Syntax con:preset System Commands con:sys:ser? ............................................
FAQ FAQ • I connected the signal but it does not appear on screen. • The trace is updated too slowly. • I cannot see the trace on the screen. • The performance does not match the specification. I connected the signal but it does not appear on screen. Run Autoset and let the GSP-730 find the best display scale for your target signal. Press the Autoset key, then press Autoset[F1]. For details, see page 36. The trace is updated too slowly on the screen.
GSP-730 User Manual The performance does not match the specification. Make sure the device is powered On for at least 30 minutes, within +20°C~+30°C. This is necessary to stabilize the unit to match the specification. For more information, contact your local dealer or GWInstek at www.gwinstek.com / marketing@goodwill.com.
APPENDIX APPENDIX GSP-730 Default Settings The following default settings are the factory configuration settings for the spectrum analyzer (Function settings/Test settings). Frequency Center Frequency: 1.5GHz Stop Frequency: 3GHz Start Frequency: 0Hz CF Step: Auto Span Span: 3GHz Amplitude Reference level: -30.0dBm Units: dBm Scale Div: 10 Amp.
GSP-730 User Manual Full Display: Active Memory N/A Preset N/A Hardcopy N/A Hardcopy Setup Ink Normal System N/A 106 Display line: off
APPENDIX GSP-730 Specifications The specifications apply when the GSP is powered on for at least 30 minutes to warm-up to a temperature of 20˚C to 30˚C, unless specified otherwise. Frequency Frequency Range Setting Range 150kHz to 3GHz Center Frequency Setting Resolution 0.1MHz Accuracy within ±50kHz (frequency span : 0.3GHz to 2.6GHz, 20 ±5°C) Frequency Span Setting range 1MHz to 3GHz Accuracy within ±3% (frequency span : 0.3GHz to 2.
GSP-730 User Manual Input Input Impedance Input VSWR Input damage level Input connector 50ohm less than 2.0@input att ≧10dB +30dBm (CW average power), 25VDC Setting Range Accuracy 300ms to 8.
APPENDIX GSP-730 Dimensions Unit: mm Spectrum Analyzer 150 kHz 3 GHz Frequency Marker Peak Search Span BW Preset Trace Hardcopy F1 Amplitude Meas Display Autoset Limit Line Memory Hardcopy Setup System F3 F4 F5 F6 7 8 9 4 5 6 1 2 3 0 GHz / Sec dB MHz / mSec kHz / mSec Enter BK SP 152.0 F2 142.0 GSP-730 RF INPUT 50 Ω DC ±25V MAX. +30dBm MAX. 296.0 105.0 115.
GSP-730 User Manual Declaration of Conformity We GOOD WILL INSTRUMENT CO., LTD. No. 7-1, Jhongsing Rd, Tucheng Dist., New Taipei City 236, Taiwan GOOD WILL INSTRUMENT (SUZHOU) CO., LTD. No. 69 Lushan Road, Suzhou New District Jiangsu, China.
INDEX INDEX ACPR ........................................... 51 Adjacent channel power ........... 51 Amplitude Reference level ........................ 34, 35 Scale/div .......................................35 Autoset ........................................ 36 Horizontal settings .......................37 Vertical settings ............................37 Average Trace ...............................................65 Bandwidth RBW ...............................................61 Caution symbol .....
GSP-730 User Manual Contact......................................... 104 Span Full span ........................................ 32 Last span ....................................... 33 Setting ............................................ 31 Zero span....................................... 32 Specifications ........................... 107 Amplitude ................................... 107 Dimensions ................................. 109 Frequency .................................... 107 Sweep...............
