Configuring the RF Signal
R&S
®
SMBV100B
353User Manual 1178.4460.02 ─ 03
Remote command:
[:SOURce<hw>]:AM<ch>:STATe on page 692
[:SOURce<hw>]:FM<ch>:STATe on page 696
[:SOURce<hw>]:PM<ch>:STATe on page 701
Source
Selects the LF signal source.
You can vary the signal sources for each of the modulations.
"LF Generator 1/2"
Selects one or both of the internally generated LF signals.
See "Source > LF Generator Settings" on page 365.
"External"
Selects an externally supplied LF signal.
"Noise Generator"
Selects the internally generated noise signal.
See "Source > Noise Generator Settings" on page 369.
Remote command:
[:SOURce<hw>]:AM<ch>:SOURce on page 692
[:SOURce<hw>]:FM<ch>:SOURce on page 697
[:SOURce<hw>]:PM<ch>:SOURce on page 701
FM settings
The following settings are dedicated to FM.
Deviation ← FM settings
Sets the frequency modulation deviation in Hz.
The maximal deviation depends on the RF frequency and the selected modulation
mode (see data sheet).
Maximal possible deviation is selected automatically, if one of the following applies:
●
The selected deviation is too high for the particular frequency
●
The selected frequency is outside of the range where deviation is possible.
A warning message indicates this situation, too.
Remote command:
[:SOURce<hw>]:FM<ch>[:DEViation] on page 696
Deviation Mode ← FM settings
Enables you to couple the LF signal of both paths and determines the mode for fixing
the total deviation.
The total deviation is the sum of both paths. When the sum is exceeded, the
R&S SMBV100B reports a settings conflict, but does not change the settings.
"Uncoupled"
Enables you to adjust the deviation for each path independently.
"Fixed Total"
Couples the deviation of both paths in per Hz. If you change the devi-
ation of any path, the R&S SMBV100B automatically adjusts the
value of the other path. The sum always results in the set Total Devia-
tion.
Analog Modulations
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