RIGOL DG1000Z Series - Manual (Page 132)

RIGOL Chapter 2 Command System
2-120 DG1000Z Programming Guide
[:SOURce[]][:MOD]:AM:SOURce
Syntax [:SOURce[]][:MOD]:AM:SOURce {INTernal|EXTernal}
[:SOURce[]][:MOD]:AM:SOURce?
Description Set the AM modulation source of the specified channel to internal (INTernal) or
external (EXTernal) modulation source.
Query the AM modulation source of the specified channel.
Parameter Name Type Range Default
[] Discrete 1|2 1
{INTernal|EXTernal} Discrete INTernal|EXTernal INTernal
Explanation  DG1000Z can receive the modulation waveform from the internal or external
modulation source.
 When internal modulation source is selected, the modulation waveform can be
SINusoid, SQUare, TRIangle, RAMP, NRAMp, NOISe or USER and the default is
SINusoid. NOISe can be used as modulation waveform but cannot be used as
carrier waveform.
 When external modulation source is selected, the signal generator receives the
external modulating signal from the [Mod/Trig/FSK/Sync] connector of the
corresponding channel at the rear panel. At this point, the 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 +5V and the minimum when the
modulating signal is -5V.
 When [:SOURce[]] or [] 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 /*Set the AM modulation source of CH1 to external
modulation source*/
:SOUR1:AM:SOUR? /*Query the AM modulation source of CH1 and the query
returns EXT*/