Instructions

RIGOL Chapter 2 Command System
2-22 DSG800 Programming Guide
[:SOURce]:FM:EXT:IMP
Syntax [:SOURce]:FM:EXT:IMP 50|600|100k
[:SOURce]:FM:EXT:IMP?
Description Set the impedance of FM external modulation.
Query the impedance of FM external modulation.
Parameter
Name
Type
Range
Default
50|600|100k
Discrete
50|600|100k
100k
Explanation  50: set the impedance of FM external modulation to "50ohm".
 600: set the impedance of FM external modulation to "600ohm".
 100k: set the impedance of FM external modulation to "100kohm".
 When the modulation source of FM is set to "Int", this command is invalid.
Return Format
The query returns 50, 600 or 100k.
Example :FM:EXT:IMP 600
:FM:EXT:IMP?
Related
Command
[:SOURce]:FM:SOURce
[:SOURce]:FM:FREQuency
Syntax [:SOURce]:FM:FREQuency <value>
[:SOURce]:FM:FREQuency?
Description Set the FM modulation frequency.
Query the FM modulation frequency.
Parameter
Name
Type
Range
Default
<value> Real
10Hz to 100kHz (Sine)/10Hz to 20kHz
(Square)
10kHz
Explanation  When <value> is set in "Number" form, the default unit is Hz; for example,
20000. In addition, <value> can also be set in "Number + Unit" form; for
example, 20kHz.
 After the modulation frequency is set, you can rotate the knob to modify the
modulation frequency at the current step. At this point, you can set and query
the current step using the
[:SOURce]:FM:FREQuency:STEP[:INCRement]
command.
 When the modulation source of FM is set to "Ext", this command is invalid.
Return Format
The query returns the FM modulation frequency. For example, 20.00000kHz.
Example :FM:FREQ 20kHz
:FM:FREQ?
Related
Commands
[:SOURce]:FM:FREQuency:STEP[:INCRement]
[:SOURce]:FM:SOURce