Rohde & Schwarz R&S FSP Series, Operating Manual

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Operating Manual 1164.4556.12 - 06 6.59
R&S FSP Remote Control – Description of Commands
CALCulate Subsystem
Characteristics: *RST value: -
SCPI: device-specific
Mode: A
This command is only a query and therefore has no *RST value.
CALCulate<1|2>:MARKer<1...4>:FUNCtion:MDEPth[:STATe]
This command switches on the measurement of the AM modulation depth. An AM-modulated carrier
is required on the screen for correct operation. If necessary, marker 1 is previously activated and set
to the largest signal available.
The level value of marker 1 is regarded as the carrier level. On activating the function, marker 2 and
marker 3 are automatically set as delta markers symmetrically to the carrier to the adjacent maxima of
the trace.
If the position of delta marker 2 is changed, delta marker 3 is moved symmetrically with respect to the
reference marker (marker 1). If the position of delta marker 3 is changed, fine adjustment can be
performed independently of delta marker 2.
The R&S FSP calculates the power at the marker positions from the measured levels.
The AM modulation depth is calculated from the ratio of power values at the reference marker and the
delta markers. If the two AM sidebands differ in power, the average value of the two power values is
used for calculating the AM modulation depth.
The numeric suffix <1...4> of :MARKer is irrelevant with this command.
Example:
"CALC:MARK:X 10MHZ"
'Sets the reference marker (marker 1) to the carrier signal at 10 MHz
"CALC:MARK:FUNC:MDEP ON"
'Switches on the modulation depth measurement in screen A.
"CALC:DELT2:X 10KHZ"
'Sets delta markers 2 and 3 to the signals at 10 kHz from the carrier signal
"CALC:DELT3:X 9.999KHZ"
'Corrects the position of delta marker 3 relative to delta marker 2.
Characteristics: *RST value: OFF
SCPI: device-specific
Mode: A
CALCulate<1|2>:MARKer<1...4>:FUNCtion:MSUMmary? <time offset of first pulse>, <measurement
time>, <period>, < # of pulses to measure>
The commands of this subsystem are used to determine the power of a sequence of signal pulses
having the same interval. The number of pulses to be measured as well as the measurement time and
the period can be set. To define the position of the first pulse in the trace, a suitable offset can be
entered.
The evaluation is performed on the measurement data of a previously recorded trace. The data
recorded during the set measurement time is combined to a measured value for each pulse according
to the detector specified and the indicated number of results is output as a list.