Instrument Function
R&S
®
SMF100A
299
Operating Manual 1167.2319.02 ─ 12
External Trigger Input Slope - Pulse Generator
(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.
Remote command:
[:SOURce<hw>]:PULM:TRIGger:EXTernal:SLOPe
Gate Input Polarity - Pulse Generator
Selects the polarity of the Gate signal.
The signal is supplied via the PULSE IN 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.
Remote command:
[:SOURce<hw>]:PULM:TRIGger:EXTernal:GATE:POLarity
External Impedance
Selects the impedance for external pulse trigger (10
kOhm or 50
Ohm).
Remote command:
[:SOURce<hw>]:PULM:TRIGger:EXTernal:IMPedance
5.6.3.2
Pulse Train Generation
In "Pulse Train" mode, the instrument provides the associated parameters for configur-
ing a user-defined pulse train signal.
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 table and can be stored in a
file. The currently loaded file is displayed in the dialog. You can export an internally
created pulse train list as well as import an externally created one.
In remote control mode, you must first create a data file, before you switch to pulse
train mode. Otherwise you get the error message "No current list" in the "Info" line, see
Example "Generating a pulse train signal"
How to configure a pulse train signal
To perform pulse train generation, perform the following steps:
1. In the block diagram, select "Modulation > config... > Pulse Modulation".
2. Select "Source > Pulse Generator".
3. Select "Pulse Mode > Train".
Modulation Generator, Pulse Generator and LF Output