Rohde & Schwarz R&S FSP Series, Operating Manual

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R&S FSP Remote Control – Description of Commands
SENSe Subsystem
6.184 Operating Manual 1164.4556.12 - 06
6.16.9 SENSe:MPOWer Subsystem
The commands of this subsystem are used to determine the mean burst power or peak burst power for a
given number of signal bursts, and for outputting the results in a list. Since all the settings required for a
measurement are combined in a single command, the measurement speed is considerably higher than
when using individual commands.
For measuring the signal bursts, the GATED SWEEP function is used in the time domain. The gate is
controlled either by an external trigger signal or by the video signal. An individual trigger event is required
for each burst to be measured. In case of an external trigger, the R&S FSP transfers the threshold value
from the normal trigger settings (TRIG key). In case of a video signal or an IF signal, the threshold can
be set separately.
If option R&S FSP-B6 is installed, you can also use an RF signal as a trigger signal. The threshold can
also be set separately.
If an external trigger signal is used, the threshold is adjusted to those of the normal trigger settings (TRIG
key), while with a video signal the threshold can be set as desired.
The following graphics shows the relation between trigger time, trigger offset (for delayed gate opening)
and measurement time.
Depending on the settings made, the measurements are performed with the RMS detector for RMS
power or the PEAK detector for peak power. For all these measurements, TRACE 1 of the selected sys-
tem is used.
The setting parameters for this measurement are:
• analyzer frequency
• resolution bandwidth
• measurement time used for a single burst
• trigger source
• trigger level
• trigger offset
• type of power measurement (PEAK, MEAN)
• number of bursts to be measured
The commands of this subsystem can be used in two different ways:
t
Trigger
Signal
Trigger
Offset
Measurement
Time
Trigger
Signal
Trigger
Offset
Measurement
Time
Trigger
Signal
Trigger
Offset
Measurement
Time