To access the pulse generator settings ...
► | Select "Mod Gen > config... > Pulse Generator" or use the MENU key under "Mod Gen". Alternatively, the R&S SMA provides the pulse generator parameters in the "Pulse Modulation" dialog accessed via the "Modulation" block. |
The dialog provides the settings for the pulse characteristics and trigger mode. Depending on the selected modulation source and pulse mode the provided parameters vary. Note: Extended features as the generation of double pulse signals with selectable pulse widths and periods, or selectable trigger mode require option R&S SMA-K23. |
Switches on/off the output of the video/sync signal at the PULSE VIDEO connector. The signal output and the pulse generator are automatically switched on with activation of pulse modulation if pulse generator is selected as modulation source. The signal output can be switched off subsequently.
Remote command:Sets the mode of the pulse generator.
"Single" | A single pulse is generated in one pulse period. |
"Double" | Two pulses are generated in one pulse period. Additional settings for the double pulse are available in the menu. |
"Train" | Requires option R&S SMA-K27. A user-defined pulse train is generated. Additional settings for the pulse train are available in the menu after selection of the pulse train mode (see "Pulse Train Generation"). A pulse train is a sequence of pulses with user-defined on and off times. The on-time/off-time value pairs are defined in a pulse train list. The currently used pulse train file is displayed in the sub menu. |
Sets the period of the generated pulse. The period determines the repetition frequency of the internal signal.
Remote command:Sets the width of the generated pulse. The width determines the pulse length. The pulse width must be at least 20 ns less than the set pulse period.
Remote command:(External trigger only)
Sets the pulse delay. The pulse delay determines the time that elapses after a trigger event before pulse modulation starts. The pulse delay is not effective for double pulse generation.
Remote command:(Double Pulse only)
Sets the width of the second pulse.
Remote command:(Double Pulse only)
Sets the delay from the start of the first pulse to the start of the second pulse.
Remote command:Selects the trigger mode for pulse modulation.
Note: An external trigger signal is supplied via the PULSE EXT connector.
(External Trigger only)
Sets the polarity of the active slope of an applied trigger signal.
"Positive" | The pulse generator is triggered on the positive slope of the external trigger signal. |
"Negative" | The pulse generator is triggered on the negative slope of the external trigger signal. |
(Trigger Mode External Gated only)
Selects the polarity of the Gate signal.
The signal is supplied via the PULSE EXT connector.
"Normal" | The pulse signal is generated while the gate signal is high. |
"Inverse" | The pulse signal is generated while the gate signal is low. |
Selects the input impedance (10 kOhm or 50 Ohm) for the external trigger and gate signal input (PULSE EXT).
Remote command:
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