R&S®FSIQ - FAQ

Results 19
  • IEEE Programming - Waiting for Averaging to be Completed

    How can I detect the completion of the 400th sweep via remote control?This is a program containing the commands that will detect the completion of the400th sweep:REM Initiate an average sweep over 400 sweepsFSx: INIT:CONT OFFFSx: DISP:TRAC:MODE AVERFSx: SWE:COUNT 400FSx: SWE:TIME 0.1FSx: *CLSREM With *OPC the operation complete bit will be initiatedFSx: INIT;*OPCREM The next line will be repeated until

  • UNCAL is Displayed

    What can I do to get rid of the red UNCAL indicator on the screen?1) The sweep speed is too high for the selected resolution bandwidth filter. As a result, level and frequency are not measured correctly and the UNCAL indicator appears on the screen.Remedy: Increase the sweep time until UNCAL disappears. Better set the sweep time to Auto adjust.2) An internal value has been detected as out-of-limits.Remedy

  • Display info disappears in Remote Mode

    The labels on the screen disappear when the analyzer is switched into remote mode.In the remote mode the labelling is switched off by default to increase the transfer speed on the IEC bus. If you wish to see the labelling, you can switch it on with the GPIB command 'SYSTEM:DISPAY:UPDATE ON'.

  • SSB Measurement Result has Changed after a Change of Span

    I measure phase noise with the R&S FSEA. I get different results with different SPAN. If the span is 100 kHz, the result is -119dBc/Hz as expected. With a span of 116 kHz, the result will be -110 dBc/Hz which is not as expected. Why?When you change the span, you also change the Main PLL Bandwidth, which yields different measurement results.A span change from 100 kHz to 116 kHz will change the Main

  • Measure Low Frequency Signals with DC Offset

    I want to measure noise at a very low frequency (20 Hz to 100 kHz).The signal has a DC offset, but at the input of the analyzer only 0 V DC are allowed with DC coupling.The DC blocks starts at 7 kHz.How can I measure these signals without destroying my device?At these frequencies, an external block capacitor can be used. But a rather high capacity is required to ensure the low cut-off frequency, which

  • How to Create a User-Defined PRESET

    How to create a user-defined PRESETTo create your own PRESET, please proceed as follows:- Push the PRESET button.- Make the settings you want for your own PRESET.- Store the setup under a specific name (for example "MYPRESET")on the FSIQx, FSEx, ZVx and ESIBx:- Go to the "RECALL" menu (on the ZVx in the right side menu) and select the setup "MYPRESET" under"AUTO RECALL"on the FSQx, FSUx, FSPx, ESPIx

  • UNCAL and UNDERL

    UNCAL and UNDERL appear as small red letters on the display. What do they mean?UNCAL: Press the button CAL to start a total calibration. Watch the display. If messages are displayed, please note them. The messages should disappear after the calibration process has been finished .UNDERL: In the vector analyzer mode (FSIQ or FSEx+FSE-B7) this message indicates that the signal level at the ADC is below

  • What is the Structure of FSE/FSIQ Trace Data on the GPIB?

    How to convert the binary trace result from the GPIB using the command 'TRAC? TRACE1' ?The default format after *RST is the ASCII format. That means you will get 500ASCII values, which are separated by commas, in a single string (approx . 6 Kbyte)that is terminated by a line feed (0A hex).To use the floating point format you have to send the command "FORMAT REAL,32"beforehand.The FSE will answer the

  • Trace Export in ASCII Format

    Trace data is stored on the hard disk or floppy disk of the FSE, FSIQ in a binary format. How to convert binary trace data into ASCII format?The binary trace data can be converted into ASCII format using the program TRC2ASC.Recent firmware for FSE (>= version 1.91) or FSIQ (>=2.05) allows to save the trace data directly in ASCII format. The trace data format can be changed in the 'TRACE: ->(right submenu

  • What will happen to Options after Firmware Update?

    Does a spectrum analyzer from Rohde & Schwarz still have all options availableafter firmware update?The new firmware takes all hardware and firmware options into account. Some ofthe options can even be updated with a new firmware.

  • Marker Disappears when IEEE is used

    When FSIQ7 is connected to the IEEE bus, the softkeys and the marker disappear.Please use the command:SYSTEM:DISPLAY:UPDATE ON/OFFPlease take into accout that updating the display will take some time.

  • How to read out a manually created limit line via Remote Control?

    How to read out a manually created limit line via remote control?First of all, you have to assign a number to the manually created limit line:CALC:LIM1:NAME 'name_of_the_line'Then you can read out the limit line data.UseCALC:LIM1:CONT?to get the X values andCALC:LIM1:UPP?orCALC:LIM1:LOW?to get the Y values.

  • RSIB with 64-bit Windows 7?

    After upgrade from XP to 64-bit Windows 7, the RSIB connection does not work anymore?The directory for DLLs has changed. Please copy the RSIB32.DLL to C:\Windows\SysWOW64\ Name Last Modified SizeRsib32.dll Aug 21, 2013 102 kB

  • Synchronization between SME/IQ and FSE-B7/ FSIQ in QPSK Modulation

    Sometimes the synchronization between SME/IQ and FSE-B7/FSIQ in QPSK modulation does not work.A reason for the error message SYNC NOT FOUND on the FSE/FSIQ screen in vector demodulation mode might be that the QPSK mapping in the generator (SMIQ or SME) and the analyzer (FSE+FSE-B7 or FSIQ) is different.Possible solution: The SMIQ "QPSK ICO" mapping corresponds to the FSE "QPSK" mapping.In the case

  • Trace Data Export to File Readable with other Programs

    How can I get the trace data as a file which I can read with another program, e.g. EXCEL?The second submenu of the TRACE menu contains the ASCII FILE EXPORT function. This function generates an ASCII file with the setup and trace data. A description of the file format can be found in the operating manual, Chapter 4, Analyzer Mode, TRACE key.

  • FSIQ Fonts for WMF Files

    Text and lines of WMF files that have been generated with FSE/FSIQ are incorrectly reproduced when opened on another PCUse the NT Explorer to copy the FSIQ fonts into the font directory of Windows NT (eg c:\WINNT\FONTS).It is absolutely necessary that you use the Explorer for copying, since only then additional modifications in the registry regarding the fonts will be made. Name Last Modified SizeSymbol.ttf

  • 600 ms RF Pulse/Burst Measurement with Accuracy of less than 1 ms?

    How can we measure a pulse length of 600 ms with an accuracy of less than 1 ms with the FSIQ? The maximum accuracy of pulse length measurement should be better than indicated in the data sheet. Time domain problem seems to be 500 display points. 1% FS (full scale) of a pulse length of 600 ms means +/- 6 ms, and this is too much. Which settings are necessary to get more accuracy?You cannot make this

  • What is the Structure of FSE/FSIQ Trace Data on the GPIB?

    How to convert the binary trace result from the GPIB using the command 'TRAC? TRACE1' ?The default format after *RST is the ASCII format. That means you will get 500ASCII values, which are separated by commas, in a single string (approx . 6 Kbyte)that is terminated by a line feed (0A hex).To use the floating point format you have to send the command "FORMAT REAL,32"beforehand.The FSE will answer the

  • Remote Control via RS232

    I want to remote-control my analyzer with LabWindows via RS232. Can you tell me how to proceed because all my trials were in vain. Remote control is successful with GPIB, but I prefer to use RS232.There can be some problems with remote control via RS232:1) Settings in the analyzer - SETUP => GENERA SETUP => COM INTERFACE- The OWNER must be INSTRUMENT. If it is OS, you're not able to remote-controlthe

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