Instructions

Chapter 2 Command System RIGOL
DG2000 Programming Guide 2-119
Parameter
Name
Type
Range
Default
[<n>]
Discrete
1|2
1
{ON|1|OFF|0}
Bool
ON|1|OFF|0
OFF
Remarks
 When [:SOURce[<n>]] or [<n>] is omitted, the system sets the related parameters of CH1 by default.
 If the sweep function (
[:SOURce[<n>]]:SWEep:STATe) or burst function
(
[:SOURce[<n>]]:BURSt[:STATe]) is currently enabled, it will be disabled automatically when the
modulation function is enabled.
 If the harmonic function is currently enabled (
[:SOURce[<n>]]:HARMonic[:STATe]), the modulation
function cannot be enabled (i.g. the harmonic cannot be modulated).
Return Format
The query returns ON or OFF.
Example
:SOUR1:MOD ON /*Enables the modulation function of CH1.*/
:SOUR1:MOD? /*Queries the on/off status of the modulation function of CH1 and the query returns
ON.*/
[:SOURce[<n>]]:MOD:TYPe
Syntax
[:SOURce[<n>]]:MOD:TYPe {AM|FM|PM|ASK|FSK|PSK|PWM}
[:SOURce[<n>]]:MOD:TYPe?
Description
Sets the modulation type of the specified channel.
Queries the modulation type of the specified channel.
Parameter
Name
Type
Range
Default
[<n>]
Discrete
1|2
1
{AM|FM|PM|ASK|FSK|PSK|PWM}
Discrete
AM|FM|PM|ASK|FSK|PSK|PWM
AM
Remarks
 When [:SOURce[<n>]] or [<n>] is omitted, the system sets the related parameters of CH1 by default.
 AM (Amplitude Modulation): the amplitude of the carrier waveform changes with the transient voltage
of the modulating waveform.
 FM (Frequency Modulation): the frequency of the carrier waveform changes with the transient voltage
of the modulating waveform.
 PM (Phase Modulation): the phase of the carrier waveform changes with the transient voltage of the
modulating waveform.
 ASK (Amplitude Shift Keying): the signal generator shifts the output amplitude between two preset
amplitudes (the carrier amplitude and modulation amplitude).
 FSK (Frequency Shift Keying): the signal generator shifts the output frequency between two preset
frequencies (the carrier frequency and hop frequency).
 PSK (Phase Shift Keying): the signal generator shifts the output phase between two preset phases (the
carrier phase and modulation phase).
 PWM (Pulse Width Modulation): the carrier pulse width changes with the transient voltage of the
modulating waveform.
Return Format
The query returns AM, FM, PM, ASK, FSK, PSK, or PWM.