Configuring the RF signal
R&S
®
SMM100A
363
User Manual 1179.1341.02 ─ 05
Settings:
Threshold User4-6 Input/Threshold Pulse Input
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State
Activates pulse modulation.
Remote command:
Source
Selects between the internal "Pulse Generator" or an "External" pulse signal for the
modulation.
"Pulse Generator"
Selects the internal generator.
See
"External"
Modulation source is fed to the input connector.
See
Remote command:
Transition Type
Selects between "Fast" or "Smoothed" slew rate (slope).
"Fast"
Enables fast transitions with shortest rise and fall times.
"Smoothed"
Flattens the slew rate, resulting in longer rise / fall times. Use this
mode if you are working with devices that are sensitive to steep
slopes.
Note:
The R&S
SMM100A supports this functionality up to a certain
frequency, depending on the installed frequency options, see also
"Interactions and characteristics"
For more information, see data sheet.
Remote command:
Video Polarity
Sets the polarity of the internally generated pulse video (modulating) signal, related to
the RF (modulated) signal.
This signal synchronizes the pulse generator signal and the RF signal.
"Normal"
The video signal level follows the RF signal, that means it is high and
low simultaneously with the RF signal.
Analog modulations