4. Programming Interfaces
Giga-tronics 2400/2500 Microwave Synthesizer Series
114
Programming Manual, Part Number 34783, Rev A, July 2009
Table 17 Source Subsystem – Modulation SCPI Commands
Command Syntax
Description
[SOURce]:PM:INTernal:FUNCtion:SHAPe ?
Queries the shape of the internal phase
modulation generator waveform. Returns: "Off",
"Sine", "Square", "Triangle", or "Pos Ramp".
[SOURce]:PM:SENSitivity <fm_sens>
Sets the phase modulation external sensitivity to
the value specified by <fm_sens>. The value is in
Hertz per volt.
[SOURce]:PM:SENSitivity?
Queries the phase modulation external sensitivity.
The return value is in Hertz per volt.
[SOURce]:PM:SOURce EXTernal| INTernal|DC
Sets the phase modulation source. The choices
are:
•
INTernal Sets the internal PM generator as the
PM source.
•
EXTernal Selects external PM. The modulation
source in this case is the signal applied at the
rear-panel FM/φM IN connector.
[SOURce]:PM:SOURce?
Queries the phase modulation source. Returns
either "Internal" or "External".
[SOURce]:PM:STATe ON|OFF|1|0
Sets the phase modulation mode on or off. The
choices are:
•
1|ON Sets PM mode to on.
•
0|OFF Sets PM mode to off.
[SOURce]:PM:STATe?
Queries the frequency modulation mode. The
return values are:
•
1 PM mode is currently on.
•
0 PM mode is currently off.
[SOURce]:PM:TYPE NARrow|WIDE Sets the phase modulation bandwidth to Narrow
or Wide.
[SOURce]:PM:TYPE? Queries the phase modulation bandwidth. Return
“Narrow” or “Wide”.
[SOURce]:PM:INTernal:FUNCtion[:SHAPe]?
Queries the frequency of the specified
internal signal source.
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