Instructions

Chapter 2 Command System RIGOL
DSG800 Programming Guide 2-23
[:SOURce]:FM:FREQuency:STEP[:INCRement]
Syntax [:SOURce]:FM:FREQuency:STEP[:INCRement] <value>
[:SOURce]:FM:FREQuency:STEP[:INCRement]?
Description Set the FM modulation frequency step.
Query the FM modulation frequency step.
Parameter
Name
Type
Range
Default
<value> Real 1Hz to 50kHz 1kHz
Explanation  When <value> is set in "Number" form, the default unit is Hz; for example,
5000. In addition, <value> can also be set in "Number + Unit" form; for
example, 5kHz.
 After the modulation frequency step is set, you can rotate the knob to modify
the modulation frequency at the current step. At this point, you can query or set
the modulation frequency using the [:SOURce]:FM:FREQuency command.
Return Format The query returns the FM modulation frequency step. For example, 5.00000kHz.
Example
:FM:FREQ:STEP 5kHz
:FM:FREQ:STEP?
Related
Command
[:SOURce]:FM:FREQuency
[:SOURce]:FM:SOURce
Syntax [:SOURce]:FM:SOURce EXTernal|INTernal
[:SOURce]:FM:SOURce?
Description Set the FM modulation source.
Query the FM modulation source.
Parameter
Name
Type
Range
Default
EXTernal|INTernal
Discrete
EXTernal|INTernal
INTernal
Explanation  EXTernal: set the modulation source to "Ext". At this point, the external
modulating signal is input from the [EXT MOD IN] connector.
 INTernal: set the modulation source to "Int". At this point, the instrument
provides the modulating signal and you can set the modulation frequency and
modulation waveform of the modulating signal.
Return Format
The query returns the FM modulation source. For example, INT.
Example :FM:SOUR INT
:FM:SOUR?
Related
Commands
[:SOURce]:FM:FREQuency
[:SOURce]:FM:WAVEform