SCPI Command Set
2500A Series Operation Manual, 34172 Revision C, March 2008
[SOURce]:FM:BANDwidth
NARRow|WIDE
Sets the Frequency Modulation bandwidth. The choices are as
follows:
NARRow Selects narrow FM bandwidth.
WIDE Selects wide FM bandwidth.
[SOURce]:FM:BANDwidth? Queries the Frequency Modulation bandwidth. Returns "Narrow"
or "Wide".
[SOURce]:FM[:DEViation] <fm_dev> [HZ
| KHZ | MHZ | GHZ]
Sets the internal Frequency Modulation deviation to the value
specified by <fm_dev> (Not available with Option 17A or 17B).
Hertz is assumed for the units if no units is specified.
[SOURce]:FM[:DEViation]? Queries the internal Frequency Modulation deviation that is
currently set. The return value is in Hertz (Not available with
Option 17A or 17B).
[SOURce]:FM:INTernal:FREQuency
<fm_freq> [HZ | KHZ | MHZ | GHZ]
Sets the rate of the internal Frequency Modulation generator to the
value specified by <fm_freq> . Hertz is assumed for the units if no
units is specified. (Not available with Option 17A or 17B).
[SOURce]:FM:INTernal:FREQuency? Queries the current rate of the internal Frequency Modulation
generator. The return value is in Hertz (Not available with Option
17A or 17B).
[SOURce]:FM:INTernal:FUNCtion:SHAPe
OFF|SINE|SQUare|TRIangle|PRaMP
Sets the shape of the internal frequency modulation generator
waveform (Not available with Option 17A or 17B). The choices are
as follows:
OFF Turns the internal frequency modulation generator off.
SINE Sets the internal frequency modulation generator
waveform to sine wave.
SQUare Sets the internal frequency modulation generator
waveform to square wave.
TRIangle Sets the internal frequency modulation generator
waveform to triangle wave.
PRaMP Sets the internal frequency modulation generator
waveform to a positive-going ramp.
[SOURce]:FM:INTernal:FUNCtion:SHAPe
?
Queries the shape of the internal frequency modulation generator
waveform (Not available with Option 17A or 17B).
Returns: "Off", "Sine", "Square", "Triangle", or "Pos Ramp".
[SOURce]:FM:SENSitivity <fm_sens> Sets the Frequency Modulation external sensitivity to the value
specified by <fm_sens>. The value is in Hertz per volt.
[SOURce]:FM:SENSitivity? Queries the Frequency Modulation external sensitivity. The return
value is in Hertz per volt.
[SOURce]:FM:SOURce EXTernal|
INTernal|DC
Sets the frequency modulation source. The choices are as follows:
INTernal Sets the internal FM generator as the FM source.
EXTernal Selects external FM. The modulation source in this case
is the signal applied at the rear-panel FM/φM IN
connector.
DC Maximum deviaiton for DC mode is 125 kHz for ±1 volt
external input from 500 MHz to maximum frequency of
the instrument.
[SOURce]:FM:SOURce? Queries the frequency modulation source. Returns either
"Internal" or "External".
[SOURce]:FM:STATe ON|OFF|1|0 Sets the frequency modulation mode on or off. The choices are as
follows:
1|ON Sets FM mode to on.
0|OFF Sets FM mode to off.
Table 3-12: Source Subsystem - Modulation SCPI Commands
Command Syntax Description
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