PSA2702 & PSA1302 2.7GHz & 1.
CONTENTS 1 Product Introduction.....................................................................................................4 2 3 Safety Information.........................................................................................................6 Basics of Operation ......................................................................................................7 4 3.1.1 3.1.2 3.1.3 3.1.4 3.1.5 3.1.6 DC Power Input ..................................................................
4.5.2 4.5.3 4.5.4 4.5.5 Reference Level ....................................................................................................18 Vertical Scaling .....................................................................................................18 Amplitude Offset and Compensation Tables (when fitted) ....................................19 Amplitude Limits (when fitted) ...............................................................................19 4.6.
5.7.4.1 5.7.4.2 5.7.4.3 6 Upgrade Option U01 ...................................................................................................38 6.1.1 6.1.2 6.1.3 6.1.4 6.1.5 6.1.6 6.1.7 7 Compensation Tables ....................................................................................37 Limit Pattern Tables .......................................................................................37 Logging Files .....................................................................................
10 11 12 EMC ...........................................................................................................................49 Declaration of Conformity .......................................................................................50 Specification ............................................................................................................51 12.1.1 Frequency Measurement ......................................................................................51 12.1.
1.3 Product Description and Capabilities The PSA2702 and PSA1302 are fully portable RF spectrum analyzers that incorporate a high resolution colour TFT touch screen. They are sufficiently small and lightweight to be operated as true handheld instruments and have a battery life of more than eight hours from each charge. As bench instruments they can be powered by the supplied ac-line adaptor/charger. They can be set horizontally or vertically, or at an angle of about 40 degrees using the built-in tilt stand.
2 Safety Information Spectrum Analyzer This instrument is Safety Class III according to IEC classification and has been designed to meet the requirements of EN61010-1 (Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory Use). This instrument has been tested in accordance with EN61010-1 and has been supplied in a safe condition.
3 Basics of Operation 3.1 External Connections 3.1.1 DC Power Input DC power to operate and/or recharge the instrument is connected via a 1.3mm power socket mounted on the right hand side of the instrument. Use ONLY the power-supply/charger provided by TTi with the unit. Use of any other power source will void the warranty. The red lamp next to the socket flashes whilst charging is taking place and becomes continuous once charging is complete. 3.1.
3.1.4 USB Host Connector (for USB Flash Memory) A standard USB type A connector is provided on the left hand side of the instrument which is revealed by moving the sliding cover towards the top of the instrument. This is intended exclusively for the connection of a USB Flash memory stick. See section 5.6.3 for full information. 3.1.
3.3 Batteries and AC Line Power 3.3.1 Battery Operation The instruments operates from an internal Lithium-ion rechargeable battery which can provide more than 8 hours of continuous operation (screen brightness dependent). The battery condition is indicated on the display via a multi-segment battery symbol. When it changes colour to yellow, expected battery life has fallen below 1 hour. When it turns red, expected battery life has fallen below 20 minutes.
3.4 Display and Controls Layout Fig.
3.5 Touch Screen Operation The normal mode of operation of the spectrum analyzer is by using the touch-screen keys within the display supplemented, when required, by the hard keys below. The touch screen keys are normally operated by pressing with the finger or thumb, but can alternatively be operated using the supplied stylus. 3.5.1 Finger Tip Operation The touch screen is a resistive single-touch type (rather than the capacitive multi-touch type used on many smart phones).
4 Operation using the Menu System The default menu system for the spectrum analyzer consists of three rows of five keys. The upper row represents the top level of the menu system and defines five “menu groups” as follows: Freq/ Span Sweep/ BW enables the frequency range of sweep to be set in terms of start and stop frequencies or centre frequency plus span. enables the type of sweep to be set (repeat or single shot) and the resolution bandwidth and video filter for the sweep to be selected.
4.1.1 Centre Centre controls the centre frequency for the sweep. Also sets the annotation to Centre/Span if it was previously Start/Stop. Creates a set of bottom-row function keys as follows: Set Centre enables the centre frequency to be set to a specific value. The menu keys are replaced by a numeric keyboard from which a centre frequency can be entered in MHz to a resolution of 0.001. Press to activate the new frequency without leaving the screen or return to the menu.
4.1.3 Start/Stop Start Stop Set Start controls the start and stop frequencies for the sweep. Also sets the annotation to Start/Stop if it was previously Centre/Span. Creates a set of bottom-row function keys as follows: Set Stop enables the start or stop frequency to be set to a specific value. The method for setting these is similar to that for setting the Centre frequency - see section 7.2 for an illustrated description of frequency setting.
4.1.5 Frequency Presets enables up to six frequency ranges to be quickly stored and recalled. Only the centre and span (or equivalent start and stop frequencies) are stored. This differs from a Trace State or Set-up file for which more parameters are stored (see sections 5.7.1 or 5.7.3 respectively). Frequency presets are retained when the instrument is off. Creates a set of bottom-row function keys as follows: Freq Presets Full Span sets the sweep to the full range of the instrument (1MHz to 2.7GHz or 1.
4.4 Setting the Sweep Mode and Sweep Bandwidth (RBW) This menu group controls the sweep and the resolution bandwidth. Sweep/ BW Video Filter RBW Sweep This enables the sweep to be controlled in terms of the type of sweep (repeat or single) and the resolution bandwidth of the sweep filter and the subsequent video filtering. If option U01 is fitted, sweep triggering can also be controlled. 4.4.1 RBW RBW controls the resolution bandwidth of the sweep filter.
Single ReArm provides a choice of automatic or manual re-arming of the trigger when triggering is enabled and the sweep mode is set to Single. When the menu system is set to Sweep/BW > Sweep the sweep status is displayed in the lower annotation area directly above the keys. 4.4.3.1 Sweep Rate and the Sweep Progress Indicator Line The sweep time and resultant update rate is a function of the span and the RBW and is shown within the lower annotation area.
4.5 Setting the Level Attenuator, Amplitude Scale, and Limits This menu group controls the input attenuator, thus changing the reference level, and controls the measurement units and scaling of the amplitude display. When option U01 is fitted, it also enables the sweep amplitude to be compared with limit lines or patterns and the use of level offset and compensation tables. Level/ Limits Units/ Graticule Scale/ Shift Ref Level Offset/ Tables Limits 4.5.
4.5.4 Amplitude Offset and Compensation Tables (when fitted) Offset/ Tables Clear All Set enables the amplitude scaling to be offset to match external attenuation or gain, or to add frequency dependent amplitude compensation tables to match transducers or antennae. These functions are only available when the upgrade option U01 is fitted - see section 6. Creates a set of bottom-row function keys as follows: cancels any offset or compensations that have been set and returns the amplitude scaling to normal.
4.6 Controlling and Storing Traces and Images This menu group controls the traces that appear on the screen (as well as the markers that are used for measurement). Traces/ Markers Traces Control Trace Mode Trace Stores Marker Setup Marker Control There are three traces: Live (green), View (white) and Reference (purple). Only the Live trace is updated from the sweep. The View trace is a temporary copy of the live trace created whenever the View key is pressed.
When the sweep is re-started (or the Swap key pressed again), the View and Live traces are swapped back. Either the Live trace or the View trace can be saved to a trace file (see section 5.1). The Reference trace is purple and is always underneath the other traces if they are on. The reference trace is created by recalling a trace file from the memory. Measurement markers cannot be used on a Reference trace.
4.7 Using Measurement Markers This menu group controls the markers that are used for measurement (as well as the traces that appear on the screen). There are two markers M1 and M2 which provide a readout of amplitude at any frequency point on the trace. M2 can only be on if M1 is on, and the frequency difference between the two is also shown. Markers can be set to automatically find peaks, or track the largest peak. Traces/ Markers Traces Control Trace Mode Trace Stores Marker Setup Marker Control 4.7.
4.7.2 Controlling Markers Marker Control controls the frequency position of the markers. Creates a set of bottom-row function keys as follows: M1/M2 Active selects which marker is controlled by the marker movement keys. The active marker is indicated by an arrow (>) in front of its readout. Manual Set Unfix enables the frequency position of the active marker to be set numerically using similar frequency entry screens as for Set Centre (see section 4.1.1).
Function = Scroll mode is selected from Marker Setup > Function or from the Navigate Down hard key, and is indicated by two horizontal arrows on the left hand side of the marker readout. The mode is selected for the marker that is currently active. Peak Track mode can only be selected for M1. It is selected from Marker Setup > Function, and is indicated by an upwards arrow followed by a capital T on the left hand side of the marker readout.
4.8 Data Logging Functions (when fitted) This menu group controls logging functions when fitted (see section 6.1). It also controls store/recall of instrument set-ups and access to system functions, which are covered in the next section - section 4.9. Setup/ Functions s Logging Setups System/ File Ops 4.8.1 Setting-up the Logging Function Logging Log Type Logging is only available when the upgrade option U01 is fitted.
4.9 Storing and Recalling Set-ups | System Settings This menu group controls storing and recalling complete instrument set-ups, and access to system functions such as screen brightness and file operations (as well logging when fitted see section 4.8). Setup/ Functions s Measure Logging Setup Logging Control Setups System/ File Ops 4.9.1 Storing and Recalling Instrument Setups Setups enables the complete setup of the instrument to be stored and recalled via user nameable files. See section 5.7.
4.10 Status Information | On-screen Help | System Utilities This menu group is accessed using the hard key marked STATUS/Help or by the soft key Setup/Functions > System/File-Ops > System Utilities. When the key is pressed, the normal key menu is replaced by a special menu as shown opposite. 4.10.1 Status Display When the Status/System key is selected, the top part of the screen is replaced by a detailed listing of the current instrument setup conditions. The status information is split over three pages.
Bright Level** ** opens an information box explaining where the screen brightness controls are located (Setup/Functions > System/File Ops). This is because screen brightness should be adjusted with the trace and graticule displayed rather than the status screen. 4.10.3.2 Power Options, Power On State, Clock Setting Power/ Clock enables aspects of the power on-off system to be set, along with the real-time clock.
4.11 Using Instrument Presets | Automatic Setting This special menu is accessed using the hard key marked PRESET (Presets/Auto). Its function is to enable the overall setup of the instrument to be changed quickly to suit specific requirements. Standard Preset User Preset Auto Find Recall Setup Restore Previous Standard sets the frequency, level and sweep parameters back to known state (see section Preset 8.1).
5 File Storage - Traces, Screens, Setups, Logs, Tables The instrument incorporates a large Flash based disk drive for the storage of a variety of different file types including Traces, Screen Images and Instrument Set-ups. When the upgrade pack (U01) is fitted it may also include Logging Files, Limit Pattern Tables and Amplitude Compensation Tables. The instrument filing system provides a consistent method for storing, recalling, renaming, deleting and copying files.
Pressing completes the storing of the file under the chosen name. The default name can also be changed by pressing . Any name of up to five characters can be used - see section 5.1.1.1 below. It is also possible to delete or rename files from this screen by pressing section 5.5. - see 5.1.1.1 Default File Name Rules Default names are always five characters long, but the user can choose to enter less than five characters and the system will add the appropriate number of underscores at the end.
5.3 Storing Instrument Set-up Files Storing of Instrument Set-ups is controlled from the menu function: Setup/Functions > Setups > Store Setup. (as described in section 4.9.1) This function enables a complete instrument set-up to be stored as a file within the internal memory. (N.B. external memory cannot be used to store files directly, although files can be copied to external memory later). The menu keys are replaced by a control screen as shown.
Pressing brings up an alpha numeric keyboard. When a character is pressed the keypad disappears and the listing then shows only files that start with that character. Pressing executes the file operation. It is also possible to delete or rename files from this screen by pressing section 5.5. 5.5 File Utilities Screen Store and Recall screens include a which enables files to be renamed or deleted. key The layout is similar to a File Recall screen - see section 5.4 .
Pressing causes all spectrum analyzer operation to be suspended and enables a connection to be made to a personal computer. See section 5.6.4 for a detailed explanation. Pressing changes the screen to provide options of Rename, Delete or Copy. Rename and Delete operate in a similar way as for the File Utilities screen - see section 5.5. The Copy function copies a file from the currently selected drive.
5.6.1.1 File Names Created or Renamed Externally Files may be created externally or created within the instrument and renamed externally (e.g. using Link to PC mode). Such files may have long file names and/or include lower case characters and additional characters such as ?. The instrument will correctly list all such files that conform with an 8.3 naming system and which have the correct extension for the relevant folder.
5.6.4 Linking to a PC via USB The USB Type Mini B connector on the left hand side of the instrument is arranged as USB “device” and is intended exclusively for connection to the USB port of a personal computer for the transfer of files to or from the internal memory of the instrument. The connection should be made using the cable supplied, which is a standard USB Mini B plug to USB Standard A plug. Note that it is not possible to use the USB Link to PC when a USB Flash Drive is connected.
5.7.2 Screen Image Files A screen image file represents a "snapshot" of the whole of the screen excluding the key area. A screen file can be recalled in a similar way to an image on a digital camera, whilst sweeping of the spectrum analyser is suspended (Paused). It can also be exported to a PC and printed for documentation purposes. Screen files are indexed colour bitmaps of about 50 kilobytes in size. Within the instrument they use an 8.3 naming format with the extension .
6 Upgrade Option U01 The capabilities of the instrument can be enhanced by installing the upgrade option U01 which adds additional firmware to the instrument. Option U01 can be downloaded from the Aim-TTi website and can be installed by the user without any requirement to return the instrument to its supplier. Activation of the upgrade is achieved via an activation code which can be purchased from the Aim-TTi website, or from our distributors and agents across the world. 6.
7 Further Notes on Operation 7.1 Operation using the Hard Keys Only Although the instrument is designed to be operated via the touch screen, it is also possible to operate it using only the hard keys. This may be appropriate in particular circumstances such as when the user is wearing gloves. Hard-key-only operation is activated by pressing the circular button marked which then illuminates.
7.2.2 Set by Tab/Jog This control screen replaces the menu with a display of the existing frequency and enables it to be changed. Pressing either of the keys moves the arrows left or right along the digits. Pressing either of the keys increments or decrements the value of that digit. The Jog keys auto-repeat, and the new frequency is accepted and executed after a delay of around two seconds. Pressing returns to the menu. Pressing screen as detailed above.
7.2.4 Repetitive Operations A common requirement for a spectrum analyzer user is to change repetitively between two or more frequency ranges. The PSAxx02 provides several methods for doing this. 1. When setting the centre frequency using the keyboard, the Previous key can be used to toggle between two centre frequencies - see section 7.2.1. The same facility is provided for Set Span, Set Start and Set Stop. 2.
7.5 Level Offset and Compensation Tables These functions are only available when the upgrade option U01 is fitted - see section 6. They enable the amplitude scaling to be offset to match external attenuation or gain, or to add frequency dependent amplitude compensation tables to match transducers or antennae. A description of the menu keys used to control the function is given in section 4.5.4. 7.5.
7.6.1 Setting Limits Pressing the Set Limits key (Level/Limits > Limits > Set Limits) brings up a control screen as shown. The keys on the top line select which limit is to be controlled by the bottom row keys. Where a limit line or pattern has already been set, it can be turned on or off using Limit On/Limit Off. The status of the two limits is displayed within the area directly above the keys.
7.6.4 Limit Offset The Limit Offset function enables a limit to be offset from its initial value. It is intended primarily for limit patterns (which would otherwise have to be regenerated) but can also be used with limit lines. The Limit Offset control screen enables a limit to be “nudged” up or down in steps of 1dB or 0.1dB. Where a limit has had an offset applied to it, a ** symbol is displayed within the Set Limits control screen. 7.
enables the default file name that will be automatically allocated to the next logging file to be changed. Standard default file name rules apply - see section 5.1.1.1 commences the opening of a logging file under the currently displayed name. An information message is displayed and logging is actually enabled after confirming with the Status hard key. causes new entries into the current logging file to be suspended and re-started.
7.7.5 Logging from Amplitude Limits The logging function can be set via the Log Trigger key to save entries when a signal is generated by the Amplitude Limits Comparator. The data that is logged will relate to the sweep that was in progress when the limit condition occurred. The Limits function must be set to have a potentially valid condition. See section 7.6 for an explanation of the Limits function. 7.7.
8 Default Settings | Power On State |Hard Reset 8.1 Standard Preset The standard preset is accessed by pressing the hard key marked . The standard preset returns the instrument to a set of known conditions as follows (values apply to PSA2702): Parameters in {brackets} are relevant only if option pack U01 is installed. Centre Frequency: Start Frequency: Step Value: RBW: Sweep: Reference Level: Scale: {Offset: {Limit 1 & 2 Live Trace: View Trace: Markers: {Logging: 1350.5MHz Span: 2699.0MHz 1.
8.4 Unrecoverable Fault Condition - Hard Reset If the spectrum analyzer gets into a condition in which normal operation is not possible, it can be returned to normal operation by reloading the Factory Default settings - see section 4.9.1. However, if it “locks up” (i.e. will not respond to key presses) or cannot be recovered by using Load Defaults, it can be put through a Hard Reset. The reset button is accessed through a small hole at the top right hand side of the case.
10 EMC Spectrum Analyzer – powered by internal battery or Adaptor/Charger This instrument has been designed to meet the requirements of the EMC Directive 89/336/EEC. Compliance was demonstrated by meeting the test limits of the following standards: Emissions EN61326-1 (2006) EMC product standard for Electrical Equipment for Measurement, Control and Laboratory Use.
11 Declaration of Conformity EC Declaration of Conformity We Thurlby Thandar Instruments Ltd Glebe Road Huntingdon Cambridgeshire PE29 7DR England declare that the PSA1302 and PSA2702 Portable RF Spectrum Analyzers meet the intent of the EMC Directive 2004/108/EC and the Low Voltage Directive 2006/95/EC. Compliance was demonstrated by conformance to the following specifications which have been listed in the Official Journal of the European Communities.
12 Specification 12.1.
Amplitude Markers Number of Markers: Marker Resolution: Amplitude Readout: One, Two, or None 0.1 dB Display of absolute and difference amplitudes for both markers in graticule units (dBm or dBuV) or linear units (mV or uW). Amplitude Limits (only with Option U01) Limit Types: Limit Lines from numeric values, or Limit Patterns from Files. Pattern files are created using PSA-Manager software. Number of Limits: One or two limits on screen.
12.1.6 Demodulation (Zero Span mode) Demod. Modes: Display: Audio Out: Audio Filter AM or FM Carrier amplitude only (horizontal line). 30 mW into 32 Ohms mono or stereo headphones, adjustable volume, 3.5mm jack socket Selectable low-pass filter to attenuate high frequency interference. 2 pole filter with turnover point at approximately 3 kHz. 12.1.7 Display Display Type: Graticule: 4.3 inch (10.9 cm) transflective backlit TFT LCD, 480 x 272 pixels total, 16 colours, touch screen. 8.
Signal Input Input Connector: VSWR: Absolute Maximum Input Level: 12.1.10 SMA connector, 50 Ohms 1.5:1 typical + 20 dBm or +127 dBµV (2.2V rms) or 15V dc AC Line Operation The PSAxx02 can be operated continuously from mains power using the AC power adaptor provided by TTi. This also recharges the internal battery. Input Voltage Range: 100V to 240V nominal 50Hz/60Hz. Interchangeable plus for UK, Euro, USA and Australia are supplied. 12.1.
13 Appendix A: PSA-Manager Software PSA-Manager is a Windows* PC application for the creation, editing, analysis and management of PSAxx02 files. It is compatible with versions of Windows from XP onwards (including 32 and 64 bit versions). PSA-Manager may be supplied on the CD accompanying the instrument, or may be downloaded from the web site. Installing PSA-Manager will also install a secondary application called PSA-View.
14 Appendix B: Menu Tree Diagram Page 56
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Thurlby Thandar Instruments Ltd. Glebe Road • Huntingdon • Cambridgeshire • PE29 7DR • England (United Kingdom) Telephone: +44 (0)1480 412451 • Fax: +44 (0)1480 450409 International web site: www.aimtti.com • UK web site: www.aimtti.co.uk Email: info@aimtti.com Aim Instruments and Thurlby Thandar Instruments Book Part No.
