Troubleshooting
R&S
®
FSVA3000/ R&S
®
FSV3000
1217
User Manual 1178.8520.02 ─ 01
ging function after debugging to avoid unnecessary access to the hard drive and use of
storage space.
16.4
Miscellaneous Troubleshooting Hints
Power levels for low frequency signals not correct
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Multiple user access to one instrument
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Web browser access to instrument fails
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Power levels for low frequency signals not correct
By default, the R&S
FSV/A uses AC coupling for RF input. For very low frequencies,
the input signal may be distorted with this setting. In this case, use DC coupling
instead. To change the setting, select "INPUT/OUPUT" > "Input Source Config > Radio
Frequency > Input Coupling > DC".
Invalid trace display
If output to the "IF
2
GHz
OUT" connector is activated, the measured values are no
longer sent to the display; thus, the trace data currently displayed on the R&S
FSV/A
becomes invalid. A message in the status bar indicates this situation.
Data capturing takes too long
Particularly for FFT sweeps, the time required to process the data may be considerably
longer than the time required to capture the data. Thus, if you only consider the defined
sweep time, you may assume an error has occurred if the measurement takes longer
than expected.
However, while the sweep time only defines the time in which data is actually captured,
the total sweep
duration
includes the time required for capturing
and processing
the
data. Thus, for FFT sweeps in the Spectrum application, the sweep duration is now
also indicated in the channel bar, behind the sweep time. In remote operation, the esti-
mated sweep duration can be queried for all sweep modes (also zero span and fre-
quency sweeps).
Tip:
To determine the necessary timeout for data capturing in a remote control pro-
gram, double the estimated time and add 1 second.
Remote command:
Multiple user access to one instrument
Using the R&S
FSV/A's LXI browser interface, several users can access
and operate
the same instrument simultaneously. This is useful for troubleshooting or training pur-
poses.
Type the instrument's host name or IP address in the address field of the browser on
your PC, for example "http://10.113.10.203". The instrument home page (welcome
page) opens.
Miscellaneous Troubleshooting Hints
