Instructions

Chapter 2 Command System RIGOL
DG2000 Programming Guide 2-97
 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, amplitude of the modulated
waveform is controlled by the ±5 V signal level of the connector. For example, if the modulation depth
is set to 100%, the output amplitude will be the maximum when the modulating signal is +5 V and the
minimum when the modulating signal is -5 V.
 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:AM:SOUR EXT /*Sets the AM modulation source of CH1 to external modulation source.*/
:SOUR1:AM:SOUR? /*Queries the AM modulation source of CH1 and the query returns EXT.*/
[:SOURce[<n>]][:MOD]:AM:STATe
Syntax
[:SOURce[<n>]][:MOD]:AM:STATe {ON|1|OFF|0}
[:SOURce[<n>]][:MOD]:AM:STATe?
Description
Enables or disables the AM modulation function of the specified channel.
Queries the on/off status of the AM 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
 AM (Amplitude Modulation): the amplitude of the carrier waveform changes with the transient voltage
of the modulating waveform.
 The AM carrier waveform could 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, offset, and start phase) of the carrier waveform will affect the output AM
modulated waveform.
 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:AM:STAT ON /*Enables the AM modulation function of CH1.*/
:SOUR1:AM:STAT? /*Queries the on/off status of the AM modulation function of CH1 and the query
returns ON.*/