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Trigger
R&S
®
MXO 5 Series
153User Manual 1802.3369.02 ─ 02
Holdoff conditions define a waiting time after the current trigger until the next trigger
can be recognized.
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.
To toggle quickly between "Auto" and "Normal" mode, use the [Auto Norm] 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.
"Free run"
The instrument starts acquisition immediately and triggers after a
short time interval independent of the time base settings and faster
than in "Auto" mode. Real triggers are ignored. Use this mode if the
"Auto" mode is too slow.
Remote command:
TRIGger:MODE on page 510
Trigger mode / holdoff
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