Instructions

RIGOL Chapter 2 Command System
2-94 DG2000 Programming Guide
:SOURce[:MOD]:AM
Command List:
 [:SOURce[<n>]][:MOD]:AM[:DEPTh]
 [:SOURce[<n>]][:MOD]:AM:DSSC
 [:SOURce[<n>]][:MOD]:AM:INTernal:FREQuency
 [:SOURce[<n>]][:MOD]:AM:INTernal:FUNCtion
 [:SOURce[<n>]][:MOD]:AM:SOURce
 [:SOURce[<n>]][:MOD]:AM:STATe
[:SOURce[<n>]][:MOD]:AM[:DEPTh]
Syntax
[:SOURce[<n>]][:MOD]:AM[:DEPTh] {<depth>|MINimum|MAXimum}
[:SOURce[<n>]][:MOD]:AM[:DEPTh]? [MINimum|MAXimum]
Description
Sets the AM modulation depth of the specified channel.
Queries the AM modulation depth of the specified channel.
Parameter
Name
Type
Range
Default
[<n>]
Discrete
1|2
1
<depth>
Real
0% to 120%
100%
Remarks
 When [:SOURce[<n>]] or [<n>] is omitted, the system sets the related parameters of CH1 by default.
 Modulation depth indicates the amplitude variation. It is expressed in percentage. When the
modulation depth is 0%, the output amplitude is half of the amplitude of the carrier signal. At 100%
depth, the output amplitude is equal to carrier waveform amplitude. When the modulation depth is
greater than 100%, the output amplitude of the instrument will not exceed 10 Vpp (when the load is
50 Ω).
 When the external modulation source (
[:SOURce[<n>]][:MOD]:AM:SOURce) is selected, the output
amplitude of the instrument is controlled by the ±5 V signal level on the rear-panel [Sync/Ext
Mod/Trig/FSK] 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.
Return Format
The query returns the AM modulation depth in scientific notation, with 7 effective digits. For example,
5.000000E+01 (the AM modulation depth is 50°).
Example
:SOUR1:AM 50 /*Sets the AM modulation depth of CH1 to 50%.*/
:SOUR1:AM? /*Queries the AM modulation depth of CH1 and the query returns 5.000000E+01.*/