R&S SMC100A Phase Modulation - PhiM
1411.4060.32 4.87 E-4
PhiM Deviation
Sets the modulation deviation in RAD.
The maximal deviation depends on the RF frequency set and the
selected modulation mode (see data sheet). It is possible to enter a
deviation that is too high for a certain RF frequency or to vary the RF
frequency to a range in which the deviation can no longer be set. In
this case the maximally possible deviation is set and an error
message is displayed.
Remote-control command:
SOUR:PM:DEV 2.5
SOUR:PM:EXT:DEV 2.5
PhiM Sensitivity
(Source External only)
Displays the input sensitivity of the MOD input in RAD/V. The display
only appears in the case of external modulation.
The modulation depth entered under PhiM Depth is reached with 1
Volt modulation of the input.
Note:
The input voltage should not exceed 1.1 V
s
, otherwise modulation
distortions might occur.
Remote-control command:
SOUR:PM:SENS?
PhiM External
Coupling
(Source External only)
Selects the coupling mode (AC or DC) for external feed.
Note:
Coupling for external feed via input MOD EXT is set for all
modulations with external source.
AC
The DC voltage content is separated from the
modulation signal.
Remote-control command:
SOUR:PM:EXT:COUP AC
DC
The modulation signal is not altered.
Remote-control command:
SOUR:PM:EXT:COUP DC
LF Gen Freq - PhiM
(Source Internal)
Sets the frequency of the LF generator.
Remote-control command:
SOUR:LFO:FREQ 1E3
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