R&S FSMR, Operating Manual

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SENSe:LIST Subsystem R&S FSMR
1313.9723.12 6.1-168 E-1
SENSe:LIST Subsystem
The commands of this subsystem are used for measuring the power at a list of frequency points with
different device settings. The measurement is always performed in the time domain (span = 0 Hz).
A new trigger event is required for each test point (exception: Trigger FREE RUN).
The results are output as a list in the order of the entered frequency points. The number of results per
test point depends on the number of concurrently active measurements (peak/RMS/average).
Selection of concurrently active measurements and setting of parameters that are constant for the whole
measurement is via a configuration command (
SENSe:LIST:POWer:SET
). This also includes the
setting for trigger and gate parameters.
The following setting parameters can be selected independently for each frequency point:
•
Analyzer frequency
•
Reference level
•
RF attenuation of attenuator (only with option B25)
•
Resolution filter
•
Resolution bandwidth
•
Video bandwidth
•
Measurement time
•
Detector
The number of frequencies is limited to 100 entries.
The commands of this subsystem can be used in two different ways:
1. Instrument setup, measurement and querying of the results in a single command:
With this method, there is the least delay between the measurement and the result output. However,
it requires the control computer to wait for the response from the instrument.
2. Instrument setup and querying of the result list at the end of the measurement:
With this method, the control computer may be used for other activities while the measurement is
being performed. However, more time is needed for synchronization via service request.
Settings that are not directly included in commands of this subsystem can be
configured by sending the corresponding commands prior to the SENSe:LIST-
commands.
Please note that changes to the trigger level have to be executed in time domain (span
= 0 Hz) in order to take effect for the SENSe:LIST-commands.
The commands of this subsystem are not available for GSM/EDGE
measurements modulation accuracy (MAC), phase/frequency error (PFE) and
power versus time (PVT ).