SENSe Subsystem R&S FSL
1300.2519.12 6.216 E-11
• 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:
• Setting up the instrument and at the same time querying the result list: This method ensures the
smallest delay between measurement and the output of the measured values, but requires the
control computer to wait actively for the response of the instrument.
• Setting up the instrument and querying the result list after synchronization to the end of
measurement: With this method the control computer can be used for other activities while the
instrument is performing the measurement at the cost of additional time needed for synchronization
via service request.
[SENSe<1|2>:]MPOWer[:SEQuence]
This command configures the instrument setup for multiple burst power measurement and starts
a measurement sequence. When synchronizing the command with *OPC, a service request is
generated as soon as the defined number of individual measurements (# of meas) is reached.
To reduce the setting time, the setup is performed simultaneously for all selected parameters.
The command in the form of a query makes the instrument settings, performs the defined
number of measurements and outputs the measurement results list.
The numeric suffixes <1|2> are not relevant.
Parameter
<analyzer freq> Receive frequency for the burst signals to be measured (= center
frequency in manual operation)
Range: 0 Hz to max. frequency, depending on instrument model
<rbw> resolution bandwidth for the measurement
Range: 10 Hz to 10 MHz in steps of 1, 3, 10
<meas time> Time span during which measurement samples are sampled for RMS
/ peak measurement. The type of measurement is selected by <type
of meas>.
Range: 1us to 30s
<trigger
source>
trigger signal source. Possible settings:
EXTernal: The trigger signal is fed from the "Ext. Trigger/Gate" input
on the rear of the unit.
VIDeo: The internal video signal is used as trigger signal.
<trigger level> Signal level at which the trigger becomes active. For <trigger source>
= VIDeo this is the level of the video signal as a percentage of the
diagram height. If <trigger source> = EXTernal is selected, the value
entered here is ignored, as in this case the trigger input uses TTL
levels.
Range: 0 – 100PCT(<trigger source> = VIDeo)
<trigger offset> Offset between the detection of the trigger signal and the start of the
measurement.
Range: 125 ns to 100s
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