4. Programming Interfaces
Giga-tronics 2400/2500 Microwave Synthesizer Series
110
Programming Manual, Part Number 34783, Rev A, July 2009
4.4.2.10
SCPI Commands; Source Subsystem – Modulation
All commands in the Source subsystem begin with [SOURce], however, [SOURce] is the default
command, and therefore it is optional.
Table 17 Source Subsystem – Modulation SCPI Commands
Command Syntax
Description
[SOURce]:AM:DEPTh <am_depth>
Sets the internal amplitude modulation depth to a
percentage value as specified by <am_depth>.
[SOURce]:AM:DEPTh?
Queries the internal amplitude modulation depth.
The return value is in percent.
[SOURce]:AM:INTernal:FREQuency <am_freq> [HZ
| KHZ | MHZ | GHZ]
Sets the rate of the internal amplitude modulation
generator to the value specified by <am_feq>.
Hertz is assumed if no unit is specified.
[SOURce]:AM:INTernal:FREQuency?
Queries the rate of the internal amplitude
modulation generator. The return value is in Hertz
(Not available with Option 17 or 17A).
[SOURce]:AM:INTernal:FUNCtion:SHAP e
OFF|SINE|SQUare|TRIangle|PRaMP|NOI Se
Sets the shape of the internal amplitude
modulation generator waveform. The choices are:
•
OFF Turns the internal amplitude modulation
generator off.
•
SINE Sets the internal amplitude modulation
generator waveform to sine wave.
•
SQUare Sets the internal amplitude
modulation generator waveform to square
wave.
•
TRIangle Sets the internal amplitude
modulation generator waveform to triangle
wave.
•
PraMP Sets the internal amplitude modulation
generator waveform to a positive-going ramp.
•
NOIse Selects the internal noise generator as
the amplitude modulation generator.
[SOURce]:AM:INTernal:FUNCtion:SHAPe?
Queries the shape of the internal amplitude
modulation generator waveform. Returns: "Off",
"Sine", "Square", "Triangle", "Pos Ramp", or
"Noise".
[SOURce]:AM:SCALing <am_scaling>
Sets the external amplitude modulation scaling to
a percentage per volt value as specified by
<am_scaling>.
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