Instructions

RIGOL Chapter 2 Command System
2-110 DG2000 Programming Guide
[:SOURce[<n>]][:MOD]:PM:SOURce
Syntax
[:SOURce[<n>]][:MOD]:PM:SOURce {INTernal|EXTernal}
[:SOURce[<n>]][:MOD]:PM:SOURce?
Description
Sets the PM modulation source of the specified channel to internal (INTernal) or external (EXTernal)
modulation source.
Queries the PM modulation source of the specified channel.
Parameter
Name
Type
Range
Default
[<n>]
Discrete
1|2
1
{INTernal|EXTernal}
Discrete
INTernal|EXTernal
INTernal
Remarks
 DG2000 can receive modulating waveform from the internal or external modulation source.
 When the internal modulation source is selected, the modulation waveform can be SINusoid, SQUare,
TRIangle, RAMP, NRAMp, NOISe, or USER. The default is SINusoid. NOISe can be used as the
modulation waveform but cannot be used as carrier waveform.
 When the external source is selected, the generator receives the external modulating signal from the
rear-panel [Sync/Ext Mod/Trig/FSK] connector. At this time, the phase deviation of the modulated
waveform is controlled by the ±5 V signal level of the connector. For example, if the phase deviation is
set to 180°, +5 V signal level corresponds to a 180º phase variation. The lower external signal levels
produce less deviation.
 When [:SOURce[<n>]] or [<n>] is omitted, the system sets the related parameters of CH1 by default.
Return Format
The query returns INT or EXT.
Example
:SOUR1:PM:SOUR EXT /*Sets the PM modulation source of CH1 to external modulation source.*/
:SOUR1:PM:SOUR? /*Queries the PM modulation source of CH1 and the query returns EXT.*/
[:SOURce[<n>]][:MOD]:PM:STATe
Syntax
[:SOURce[<n>]][:MOD]:PM:STATe {ON|1|OFF|0}
[:SOURce[<n>]][:MOD]:PM:STATe?
Description
Enables or disables the PM modulation function of the specified channel.
Queries the on/off status of the PM modulation function of the specified channel.
Parameter
Name
Type
Range
Default
[<n>]
Discrete
1|2
1
{ON|1|OFF|0}
Bool
ON|1|OFF|0
OFF
Remarks
 PM (Phase Modulation): the phase of the carrier waveform changes with the transient voltage of the
modulating waveform.
 PM carrier waveform can be Sine, Square, Ramp, or Arbitrary waveform. The default is Sine. Pulse,
Noise, and DC cannot be used as carrier waveform. The different settings of various parameters (e.g.
frequency, amplitude, and offset) of the carrier waveform will affect the output PM modulated