Giga-tronics 2400/2500 Microwave Synthesizer Series
4. Programming Interfaces
Programming Manual, Part Number 34783, Rev A, July 2009
113
Table 17 Source Subsystem – Modulation SCPI Commands
Command Syntax
Description
[SOURce]:FM:STATe ON|OFF|1|0
Sets the frequency modulation mode on or off.
The choices are:
•
1|ON Sets FM mode to on.
•
0|OFF Sets FM mode to off.
[SOURce]:FM:STATe?
Queries the frequency modulation mode. The
returned values are:
•
1 FM mode is currently on.
•
0 FM mode is currently off.
[SOURce]:FM:COUPling AC|DC
Sets the coupling between the modulator and the
modulating signal
[SOURce]:FM:COUPling ?
Queries the coupling between the modulator and
the modulating signal
[SOURce]:PM[:DEViation] <fm_dev> [HZ | KHZ |
MHZ | GHZ]
Sets the internal phase modulation deviation to
the value specified by <fm_dev>. Hertz is assumed
for the units if unit is not specified.
[SOURce]:PM[:DEViation]?
Queries the internal Phase Modulation deviation
that is currently set. The return value is in Hertz.
[SOURce]:PM:INTernal:FREQuency <fm_freq> [HZ
| KHZ | MHZ | GHZ]
Sets the rate of the internal Phase Modulation
generator to the value specified by <fm_freq>.
Hertz is assumed for the units if no unit is
specified.
[SOURce]:PM:INTernal:FREQuency?
Queries the current rate of the internal phase
modulation generator. The return value is in Hertz.
[SOURce]:PM:INTernal:FUNCtion:SHAPe
OFF|SINE|SQUare|TRIangle|PRaMP
Sets the shape of the internal phase modulation
generator waveform. The choices are:
•
OFF Turns the internal phase modulation
generator off.
•
SINE Sets the internal phase modulation
generator waveform to sine wave.
•
SQUare Sets the internal phase modulation
generator waveform to square wave.
•
TRIangle Sets the internal phase modulation
generator waveform to triangle wave.
•
PRaMP Sets the internal phase modulation
generator waveform to a positive-going ramp.
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