R&S®SML / R&S®SMV03 SOURce:FM
1090.3123.12 E-6 6.19
SOURce:FM Subsystem
This subsystem contains the commands to control the frequency modulation and to set the parameters
of the modulation signal.
Command Parameters Default
Unit
Remark
[:SOURce]
:FM
[:DEViation]
:EXTernal
:COUPling
:INTernal
:FREQuency
:SOURce
:STATe
:BANDwidth
0 kHz to 20/40 MHz
AC | DC
0.1 Hz to 1 MHz
EXTernal | INTernal | DOUBle
ON | OFF
STANdard | WIDE
Hz
Hz
[:SOURce]:FM [:DEViation] 0 kHz to 20/40 MHz
The command specifies the frequency variation caused by the FM. The maximum possible
deviation depends on the selected frequency (see Data Sheet).
Example: :SOUR:FM:DEV 5kHz *RST value is 10 kHz
[:SOURce]:FM:EXTernal
The commands to set the external FM input are under this node. The settings under EXTernal for
modulations AM and FM are independent of each other.
[:SOURce]:FM:EXTernal:COUPling AC | DC
The command selects the type of coupling for the external FM input.
AC The d.c. voltage content is separated from the modulation signal.
DC The modulation signal is not altered.
Example: :SOUR:FM:EXT:COUP AC *RST value is AC
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