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AM
Subsystem
CSOURcel
:
AM
CAL Subsystem
[ :
DEPTh]
?
[:DEPTh]
<NRf>
[<AM
term>]
Sets AM depth in percent. *RST value is 30%.
:
STATe?
:STATe
ON
I
OFF
I
1
I
0
Turns AM modulation ON or OFF. A M is not turned on by just setting
AM:DEPTh. Turning A M modulation ON will not automatically turn
OFF any other types of modulation. Turning any or all modulation
types ON or OFF must be done explicitly.
If
a modulation type is
turned ON while another modulation type
is
ON, an execution error
-221
is
generated, and the state of the instrument
is
unchanged. *RST
value is OFF.
:
SOURce?
:SOURce
INTernal
I
EXTernal [,INTernal 1,EXTernalI
Selects AM source. ' R ST value is INTernal.
:
EXTernal
:
COUPling?
:COUPling
AC
I
DC
Sets source coupling for AM. The GROund parameter defined by the
1991 SCPI Command Reference (17.1.9.2) is not supported. *RST
value is DC.
:
INTernal
:FREQuency?
:
FREQuency
<NRf
> [<f req term>]
Sets the frequency of the AM internal signal source. Legal values are
400
Hz
and 1 kHz. *RST value is
1 kHz.
[SOURcel
:
CAL
:
DCFM
Eliminates the offset in dc FM so that the carrier frequency remains
the same with no modulation applied. External dc modulation
must be
on
to implement this calibration or execution error -221 is
generated.
2.14
HP-IB Programming
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