R&S®FSU - FAQ

I want to remote-control via LAN a device from a PC. The PC and the device have their own TCP/IP addresses, but I get no connection when I use those addresses. Which function does the Subnet Mask have?The controller can establish a connection via LAN in two different ways:It can query its local network to find a device with the defined TCP/IP address or ask a host server to search for a device with

The screen of a spectrum analyzer goes black after a certain time. After pressing a key, the instrument's screen recovers. This indicates that the analyzer's screensaver is switched to on state. What can be done to switch the screensaver off? And which keystrokes are necessary to enable the analyzer's screensaver?Checking if screensaver is on or offPress the PRESET keyPress the DISP keyPress CONFIG

How can I use the marker demodulation?The analyzers with audio demodulator and internal speaker (FSP: FSP-B3 required) offer the possibilityto demodulate the signal at the marker position and listen to the demodulated signal using the MARKER DEMOD function. AM and FM demodulation is possible. The MARKER DEMOD function can be used in ZERO SPAN andin normal frequency sweeps.Frequency domain: The sweep

I have switched to an external reference frequency.How can I check if the frequency is locked via remote control?You can check the state of the external reference frequency with the STATus:QUEStionable:FREQuency registerSTAT:QUES:FREQ:COND?If the reference frequency is not locked, it will return a '2' or a '512'.If everything is OK, it will return a '0'.

During calibration I got the error message 'CAL GEN signal low'.How can I check the internal calibration source?You can switch the RF path to the internal calibration source in the SETUP - SERVICE menu(menu for the FSL: SETUP - MORE - SERVICE).The calibration source should be a signal of 128 MHz and -30 dBm (for the FSL 65.8 MHz and -20 dBm).

I want to update my firmware. Can I also roll back the firmware to my old version before firmware update?When the analyzer firmware is updated, the analyzer will boot and operate exactly as before – in some cases even better. But if you want to return to the old version, you can restore the old analyzer firmware by pressing SETUP =>NEXT => FIRMWARE RESTORE.After you have pressed FIRMWARE RESTORE, the

I am developping an application using the FSP. Remote commands are working well using the GPIB interface. Nevertheless, I am not able to use the same commands over the LAN interface (even if the ping command works fine). What do I have to do?Here is a little program in an EXCEL file.Please open ESPI_LAN.XLS and go to EXTRAS - MACROS - Visual Basic Editorto see the program.What you need for remote-controlling

I have to measure the bandwidth of a filter or transmission channel. How can I do this?In the Spectrum Analyzer mode, you can use several markers and delta markers and findthe bandwidth manually. However, using the "n dB down" marker function is more convenient:"n dB down" activates the temporary markers that are n dB below the active reference marker.They are placed to the left and right of the reference

I have a spectrum analyzer with the external generator control option FSP-B10 and I want to connect the control cable to the SMU200A. Which BNC connector on the SMU200A do I have to use for 'Marker', 'Blank' and 'Trigger'?Connect the 'Blank' connector of the cable to the 'User1' connector of the SMU200A.Connect the 'Trigger' connector of the cable to the 'INSTR TRIG' connector of the SMU200A.The 'Marker

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 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

Because of a LAN operation I changed the logon name. Now I have changed it back to 'instrument' but I still get a logon window for the password at every boot-up . How can I restore the normal auto logon configuration?In WINDOWS, please click START and RUN (opens 'regedit') and then OK.In the tree on the left-hand side, choose the following:HKEY_LOCAL_MACHINEthen softwarethen Microsoftthen WINDOWS NTthen

The frequency of my signal can be measured with normal markers, but I want tohave it more accurate. Is there any solution and what is the reason for thelimited accuracy?The frequency resolution of the marker readout is limited by the number of display points on the frequency axis.This limits the accuracy.Especially in the case of large span values, the absolute frequency error can be significant. If

When I query the trace with a certain number of sweep points, I get the wrong number of y-values back.For example, if I set the number of sweep points to 1000, I get 1001 y-values back. So I do not know howto assign the x-values (frequency) to the y-values (level).The number of sweep points can only be set to certain values.The following steps are possible:FSP: 125, 251, 501, 1001, 2001, 4001, 8001

How can I measure noise power in a transmission channel, e.g. 1 MHzbandwidth at 1 GHz RF frequency?There are two solutions for measuring noise power in a transmission channel.One solution is the Noise Marker function at the RF with bandwidth correction.The bandwidth correction factor must be calculated as follows:Correction factor = 10x log (bandwidth / 1 Hz)But: If the noise in the channel is not

How can I update my analyzer with embedded WIN XP via LAN?- Open a remote desktop session to the analyzer on your PC- Close the analyzer function on the PC with ALT + F4- Open Start=> Settings => Control Panel => Security Center => Windows Firewall => Exceptions- Enable 'File and Printer Sharing'- Start the Windows Explorer, go to Tools, select 'Map network drive..' and enter '\\<TCP/IP-Address of

I have connected my PC to the analyzer via LAN. The firewall settings are made, I have a remote desktop connection, but I cannot see all buttons of the analyzer on my PC.I even shut down the analyzer function and restarted the analyzer function on the analyzer, but this did not help either.Please do not restart the analyzer function on the analyzer. You must restart it from the PC.Perform the following

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

I want to make the Self Alignment via remote control with the command 'CAL?'.Because this takes sometimes a very long time how can I detect the end.In the manual is mentioned to use a SRQ, but this does not work when I use a TCP/IP connectionYes, the SRQ line is a hardware line with the IEEE bus and this does not work with normal TCP/IP. So we cannot use it.Because the calibration command is a query

We have an issue with our FSx and the RT-ZS30 probe: the FSx does not automatically recognize the probeCould you please help us to solve this blocking issue.You can work with the RT-ZS30 connected to the FSx as follows:+ The RT-ZA9 provides an interface between the probe's BNC socket and an N socket and also supplies the probe with the necessary supply voltages via the USB connection. Simply connect

How can I switch from remote to local state via remote control?Using a GPIB connection, you can send a Go To Local (GTL) command.If you use VISA, the command is viGpibControlREN and you have to send the VI_GPIB_REN_DEASSERT_GTLmode.You can also use this solution when you perform programming with drivers.If you use the GPIB driver, you need the GTL command.

I control the analyzer via RS-232-C.I perform a single sweep which is triggered by an external trigger. I synchronize to end of sweep with "*OPC?".Sometimes the external trigger does not come and the "*OPC?" command ends in a time-out.After this time-out the RS-232-C connection jams.How can I open the connection again without restarting the analyzer?Please send the command "@DCL" after the time-out