SOURce:AM SME
1038.6002.02 3.30 E-13
3.6.11.1 SOURce:AM Subsystem
This subsystem contains the commands to control the amplitude modulation. Up to two LF generators
which serve as internal modulation sources can be fitted in the instrument (options SM-B2 and SM-B6).
Part of their settings is effected under SOURce0|2.
Command Parameter Default
Unit
Remark
[:SOURce]
:AM
[:DEPTh]
:EXTernal
:COUPling
:INTernal1|2
:FREQuency
:POLarity
:SOURce
:STATe
0 to100PCT
AC | DC
400 Hz, 1 kHz, 4 kHz, 15 kHz or
0.1 Hz to 500 kHz or 0.1 Hz to 1 MHz
NORMal | INVerted
EXT | INT1|2 | EXT, INT1|2
ON | OFF
PCT
Hz
Option SM-B2 or B6
[:SOURce]:AM[:DEPTh] 0 to 100PCT
The command sets the modulation depth in percent. *RST value is 30PCT
Example: :SOUR:AM:DEPT 15PCT
[:SOURce]:AM:EXTernal
The commands to set the external AM input are under this node.
[:SOURce]:AM:EXTernal:COUPling AC | DC
The command selects the type of coupling for the external AM input.
AC The d.c. voltage content is separated from the modulation signal.
DC The modulation signal is not altered. *RST value is AC
Example: :SOUR:AM:EXT:COUP AC
[:SOURce]:AM:INTernal1|2
The settings for the internal AM inputs are effected under this node.
INT1 is LF generator 1,
INT2 is LF generator 2.
Here the same hardware is set for AM, PM, FM and SOURce0|2. This means that, for example,
the following commands are coupled with each other and have the same effect:
SOUR:AM:INT2:FREQ
SOUR:FM2:INT:FREQ
SOUR:PM2:INT:FREQ
SOUR2:FREQ:CW
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