User manual

RIGOL Chapter 2 Command System
2-140 MSO5000 Programming Guide
[:SOURce[<n>]]:MOD:AM[:DEPTh]
Syntax
[:SOURce[<n>]]:MOD:AM[:DEPTh] <depth>
[:SOURce[<n>]]:MOD:AM[:DEPTh]?
Description
Sets or queries the depth of AM of the specified function/arbitrary waveform
generator channel. The modulation depth refers to the strength of the AM and is
expressed in percentage.
Parameter
Name
Type
Range
Default
[<n>]
Discrete
{1|2}
When omitted, by default, the operations
are carried out on GI.
<depth>
Integer
0% to 120%
100%
Remarks
When the modulation depth is 0%, the output amplitude is half of the amplitude
of the carrier signal.
When the modulation depth is 100%, the output amplitude is equal to the
amplitude of the carrier signal.
When the modulation depth is greater than 100%, envelop distortion will occur.
This should be avoided in actual circuit. At this time, the output of the
instrument will not exceed 5 Vpp (the load is 50 Ω).
Return
Format
The query returns an integer ranging from 0 to 120.
Example
:MOD:AM 80 /*Sets the AM modulation depth of GI to 80%.*/
:MOD:AM? /*The query returns 80.*/
[:SOURce[<n>]]:MOD:AM:INTernal:FREQuency
[:SOURce[<n>]]:MOD:FM:INTernal:FREQuency
Syntax
[:SOURce[<n>]]:MOD:AM:INTernal:FREQuency <frequency>
[:SOURce[<n>]]:MOD:AM:INTernal:FREQuency?
[:SOURce[<n>]]:MOD:FM:INTernal:FREQuency <frequency>
[:SOURce[<n>]]:MOD:FM:INTernal:FREQuency?
Description
Sets or queries the modulating waveform frequency of AM or FM of the specified
function/arbitrary waveform generator channel.
Parameter
Name
Type
Range
Default
[<n>]
Discrete
{1|2}
When omitted, by default, the
operations are carried out on
GI.
<frequency>
Integer
1 Hz to 50 kHz
1 kHz
Remarks
You can send the [:SOURce[<n>]]:MOD:TYPE command to set the modulation type.
AM: Amplitude Modulation. The amplitude of the carrier waveform changes with the
amplitude of the modulating waveform.
FM: Frequency Modulation. The frequency of the carrier waveform changes with the
modulating waveform.
You can select Sine, Square, Triangle, or Noise as the modulating waveforms.
Return
The query returns an integer ranging from 1 Hz to 50 kHz.