User manual

DG1022 Commands System RIGOL
Programming Guide for DG1022
2-39
The detailed information of each command are:
1. FM:SOURce
Command
Format
FM:SOURce {INTernal|EXTernal}
Function
Select internal or external modulation source, the default is INT.
Example
FM:SOUR EXT
2. FM:SOURce?
Command
Format
FM:SOURce?
Function
Query the modulation source of FM.
Return Value
The query returns INT or EXT.
3. FM:INTernal:FUNCtion
Command
Format
FM:INTernal:FUNCtion
{SINusoid|SQUare|RAMP|NRAMp|TRIangle|NOISe|USER}
Function
Select the internal modulation wave of FM.
Explanations
In internal modulation source mode, the modulation wave could be
sine, square, ramp, negative ramp, triangle, noise or arbitrary
wave, the default is sine.
Example
FM:INT:FUNC SQU
4. FM:INTernal:FUNCtion?
Command
Format
FM:INTernal:FUNCtion?
Function
Query the internal modulation wave of FM that has been selected.
Return Value
The query returns SIN, SQU, RAMP, NRAM, TRI, NOIS or USER.
5. FM:INTernal:FREQuency
Command
Format
FM:INTernal:FREQuency {<frequency>|MINimum|MAXimum}
Function
Set the frequency of internal modulation of FM in Hz.
Explanations
Frequency range: 2mHz20kHz
Example
FM:INT:FREQ 200
6. FM:INTernal:FREQuency?