R&S AFQ100A
AFQ Commands - Signal Generation
1401.3084.32 6.6
E-3
[SOURce:]CREStfactor?
This command queries the crest factor of the generated signal. The crest factor of a waveform is
equal to the peak amplitude divided by the root mean square value. The program calculates the
power ratio, not the voltage ratio. Hence, the crest factor of a sine function amounts to 2 instead of
sqrt(2), equal to 3.01 dB.
The command is a query command and therefore has no *RST value.
Example:
CRES?
'queries the crest factor of the generated signal.
Response: "3.01"
'the crest factor amounts to 3.01 dB.
*RST value
Resolution
Options
SCPI
-
Device-specific
[SOURce:]PRESet
The command sets all ARB generator parameters to their default values. The default settings are
listed in chapter 4, section
This command triggers an event and therefore has no *RST value and no query form.
Example:
PRES
'resets the ARB generator to default values.
*RST value Options
Dependency SCPI
-
Device-
specific
SOURce:STATe
ON | OFF
The command switches the ARB generator on.
STAT ON
is only possible after the selection of a
waveform. The selected waveform is output straight away or after the first trigger event, depending
on the trigger settings.
Example:
SOUR:TRIG:SOUR AUTO
'The segment trigger event will be executed internally by the firmware. The
Signal output starts immediately when the ARB modulation is enabled, trigger
events are ignored.
WAV:SEL 'FG_32Seg'
'loads waveform file 'FG_32Seg.wv' from the default directory.
SOUR:STAT ON
'switches on the ARB generator. The selected waveform is output straight
away.
*RST value
Resolution
Options
Dependency
SCPI
OFF -
Device-specific
