Configuring the RF Signal
R&S
®
SMW200A
541User Manual 1175.6632.02 ─ 30
State
Option: R&S SMW-B9 - enabled in "System Config > Mode = Standard".
Option: R&S SMW-B10 - enabled in "System Config > Mode = Standard/Advanced".
Activates pulse modulation.
Remote command:
[:SOURce<hw>]:PULM:STATe on page 982
Source
Selects between the internal "Pulse Generator" or an "External" pulse signal for the
modulation.
"Pulse Generator"
Selects the internal generator.
See Pulse Generator Settings.
"External"
Modulation source is fed to the input connector.
See Chapter 8.8.2.2, "External Signal Sources", on page 532.
Remote command:
[:SOURce<hw>]:PULM:SOURce on page 983
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 SMW supports this functionality up to a certain fre-
quency, depending on the installed frequency options, see also "Inter-
actions and characteristics" on page 530.
For more information, see data sheet.
Remote command:
[:SOURce<hw>]:PULM:TTYPe on page 983
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.
"Inverse"
Inverts the polarity between the video and the RF signal, that means
it is high, when RF is low, and vice versa.
Remote command:
[:SOURce<hw>]:PULM:OUTPut:VIDeo:POLarity on page 983
Polarity Pulse Input
Sets the polarity of the active slope of a pulse input signal, that is the external pulse
modulation signal.
Analog Modulations
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