R&S SMB Frequency Modulation - FM
1407.0806.32 4.67 E-2
Low Noise
Frequency modulation with phase noise and
spurious characteristics close to CW mode. The
range for modulation bandwidth and FM deviation is
reduced (see data sheet)..
Remote-control command:
SOUR:FM:MODE LNO
High Deviation
Frequency modulation with full setting range for FM
deviation. The range for modulation bandwidth is
reduced (see data sheet).
Remote-control command:
SOUR:FM:MODE HDEV
FM Deviation
Sets the modulation depth in Hz.
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.
The deviation of the internal source must not exceed the deviation of
the external source in case of modulation source Int+Ext.
Remote-control command:
SOUR:FM:DEV 1kHz
SOUR:FM:EXT:DEV 10kHz
FM Sensitivity
(Source External only)
Displays the input sensitivity of the MOD EXT input in Hz/V. The
display only appears in the case of external modulation.
The modulation depth entered under FM 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:FM:SENS? Response: "1E3"
Adjust FM Offset
Starts the adjustment for the FM/PhiM modulator. The option is
adjusted with respect to DC-offset.
Remote-control command:
CAL:FMOF?
To Next Page
Loading...
