Triggers
R&S
®
RTP
238User Manual 1337.9952.02 ─ 12
6.4 Mode / Holdoff
Access: "Trigger" menu > "Mode / Holdoff" tab
Holdoff conditions define a waiting time after the current trigger until the next trigger
can be recognized.
[Run Stop]/[Single]
Front panel keys to start and stop a continuous acquisition or a defined number of
acquisition cycles, respectively. The number of acquisitions is set with "Average count".
Remote command:
RUN on page 1187
SINGle on page 1187
STOP on page 1188
Trigger mode
Sets the trigger mode which determines the behavior of the instrument if no trigger
occurs. The current setting is shown on the trigger label on top of the signal bar.
To toggle quickly between "Auto" and "Normal" mode, use the [Mode] key on the front
panel (in "Trigger" section).
"Auto"
The instrument triggers repeatedly after a time interval if the trigger
conditions are not fulfilled. If a real trigger occurs, it takes prece-
dence. This mode helps to see the waveform even before the trigger
conditions are set correctly. The waveform on the screen is not
synchronized, and successive waveforms are not triggered at the
same point of the waveform. The time interval depends on the time
base settings.
"Normal"
The instrument acquires a waveform only if a trigger occurs, that is, if
all trigger conditions are fulfilled. If no trigger occurs, no waveform is
acquired and the last acquired waveform is displayed. If no waveform
was captured before, none is displayed.
When no trigger has been found for longer than one second, a mes-
sage box appears that shows the time elapsed since the last trigger.
Mode / Holdoff
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