Analog Modulations
R&S
®
SMA100B
79User Manual 1178.3834.02 ─ 05
└ Deviation Mode...............................................................................................83
└ Total Depth......................................................................................................84
└ Ratio Path2/Path1...........................................................................................84
State
Activates a modulation.
Note: Some modulations exclude each other and cannot be performed simultaneously.
For more information, see data sheet.
Remote command:
[:SOURce<hw>]:AM<ch>:STATe on page 515
[:SOURce<hw>]:FM<ch>:STATe on page 521
[:SOURce<hw>]:PM<ch>:STATe on page 526
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 Chapter 4.4.6.1, "Source > LF Generator Settings",
on page 98.
"External 1/2"
Selects an externally supplied LF signal.
"Noise Generator"
Selects the internally generated noise signal.
See Chapter 4.4.6.3, "Source > Noise Generator Settings",
on page 103.
Remote command:
[:SOURce<hw>]:AM<ch>:SOURce on page 515
[:SOURce<hw>]:FM<ch>:SOURce on page 522
[:SOURce<hw>]:PM<ch>:SOURce on page 526
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 521
Modulation Settings
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