R&S SMB100A, Operating Manual

Page: 342 / 528

Remote Control Commands
R&S
®
SMB100A
327 Operating Manual 1407.0806.32 ─ 21
[:SOURce<hw>]:AM:SENSitivity?
Queries the input sensitivity of the externally applied signal for amplitude modulation.
The sensitivity depends on the set modulation depth, see
[:SOURce<hw>]:AM:
DEPTh:LINear
and
[:SOURce<hw>]:AM:DEPTh:EXPonential
.
The returned value reports the sensitivity in %/V. It is assigned to the voltage value for
full modulation of the input.
Return values:
<Sensitivity> float
Range:
0 to 100
Example: AM:DEPT 50
sets a modulation depth of 50 %.
AM:SENS?
queries the input sensitivity at the external modulation input.
Response: 50
since the voltage value for full modulation is 1V, the resulting
sensitivity is precisely 50 %/V.
Usage: Query only
Manual operation: See "AM Sensitivity" on page 201
[:SOURce<hw>]:AM:SOURce <Source>
Selects the modulation signal source for amplitude modulation.
With linear AM (see
[:SOURce<hw>]:AM:TYPE
on page 328), you can use both, the
internal and an external modulation signal at a time, for example to perform two-tone
AM.
Parameters:
<Source> INTernal | EXTernal | INT,EXT
INTernal
Uses the internally generated signal for modulation. To configure
the frequency, use the commands of the
Chapter 7.13.6,
"SOURce:LFOutput Subsystem" , on page 348 subsystem.
EXTernal
Uses an externally applied modulation signal.
INT,EXT
Uses both, the internal and external modulation signals.
*RST:
INT
Example: AM:SOUR INT
selects the internal modulation source.
Manual operation: See "AM Source" on page 199
SOURce Subsystem