Analog Modulations
R&S
®
SMA100B
82User Manual 1178.3834.02 ─ 05
Remote command:
[:SOURce<hw>]:PM:RATio on page 528
Mode ← PhiM settings
Selects the mode of the phase modulation.
"High Bandwidth"
The maximum range for modulation bandwidth and PhiM deviation is
available.
However, phase noise increases at low frequencies, and the range of
PhiM deviation is limited. This mode is suitable if you process high
frequencies.
"High Deviation"
The maximum range for PhiM deviation is available.
Phase noise is improved for low frequencies compared to the default
mode. The range for modulation frequency is limited (see data sheet).
This mode is suitable for low modulation frequencies and/or high
PhiM deviation.
"Low Noise"
Frequency modulation with phase noise and spurious characteristics
close to CW mode. The range for modulation bandwidth and FM devi-
ation is reduced (see data sheet).
Remote command:
[:SOURce<hw>]:PM:MODE on page 527
AM settings
The following settings are dedicated to AM.
Mode ← AM settings
Selects the mode to derive the carrier signal for amplitude modulation.
Modulation Settings
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