Rohde & Schwarz FPL1000 Manuel D'utilisation page 902

®
R&S FPL1000
frequency sweep described in
basic frequency
presetting the instrument.
//------------- Configuring the n dB down marker -------------------
CALC:MARK1 ON
//Activates marker1 and sets it to the maximum power level
CALC:MARK1:FUNC:NDBD 3DB
//Sets the level offset to 3 dB
CALC:MARK1:FUNC:NDBD:STAT ON
//Activates the n dB down measurement
//---------------Retrieving Results-------------
CALC:MARK:FUNC:NDBD:RES?
//Returns the bandwidth at the specified power offset.
CALC:MARK:FUNC:NDBD:FREQ?
//Returns the frequencies of the temporary markers at the power offsets
CALC:MARK:FUNC:NDBD:QFAC?
//Returns the quality factor of the resulting bandwidth
Examples: demodulating marker values and providing audio output
The following examples demonstrate how to demodulate markers and provide audio
output in a remote environment.
●
Example: providing audio output for individual marker values
●
Example: demodulating and providing audio output continuously
Example: providing audio output for individual marker values
This example demonstrates how to demodulate markers and provide audio output in a
basic spectrum measurement in a remote environment. It assumes that the basic fre-
quency sweep described in
basic frequency
presetting the instrument.
Audio output is provided for 5s each time the signal reaches its initial maximum, how-
ever only if it is higher than -90 dBm (10% of the total y-axis range) in order to ignore
noise.
//------------- Configuring the marker demodulation -------------------
CALC:MARK1 ON
//Activates marker1 and sets it to the maximum power level
CALC:MARK1:FUNC:DEM:SEL FM
//Selects FM demodulation
CALC:MARK1:FUNC:DEM:HOLD 5s
//Defines an output duration of 5s
DEM:SQU:LEV 10
//Sets a squelch level for noise
DEM:SQU ON
//Activates squelching
CALC:MARK1:FUNC:DEM ON
//Activates demodulation
Manuel d'utilisation 1179.5860.09 - 12
Setting basic spectrum RF measurement parameters
Chapter 10.6.17, "Programming example: performing a
sweep", on page 740 has been performed and thus does not begin by
Chapter 10.6.17, "Programming example: performing a
sweep", on page 740 has been performed and thus does not begin by
Remote commands
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