Wave Trigger
When Trigger on Marker is switched on, a wave recording will start by initiation
of one of the markers. Markers for triggering are defined in the Markers Setup
screen.
The Trigger parameter defines additional wave recording trigger, which can be
disabled (Off) or enabled by selecting the trigger type: Slope +, Slope -,
Level +, Level –, External, Integr. Period and Int. Period Split.
Slope trigger
The Slope+ / Slope- trigger starts a signal recording on condition: rising/falling
value of the measured result (Source) averaged over the Trigger Period
passes above/below the threshold value (Level).
After pressing the <Start> key the instrument checks the trigger condition with steps, defined by the
Trigger Period parameter, and if condition is met starts the signal recording. Recording will last
Recording Time (unless the measurement is stopped earlier), and during this time the instrument continues to
check the trigger condition with the Trigger Period step. If next trigger condition is met during Recording Time
(provided that Trigger Period is shorter than Recording Time) the instrument triggers recording again, so it will
continue from this moment by additional Recording Time and so on. If during next recording time there are no
triggers, recording will be stopped after the last trigger plus Recording Time. Several WAV files can be created
during one measurement.
The attached example shows that between
measurement start and stop two records were
created. The first record is equal to Recording
Time, because during this period no second
trigger condition has been met. During the
second recording the measurement was
stopped, and the record is shorter than
Recording Time.
Note: When a signal recording is waiting for the slope trigger the
“slope” icon appears alternatively with the „wave” icon.
Level trigger
The Level + / Level - trigger starts a signal recording which will last
Recording Time (unless the measurement is stopped earlier) on condition:
value of the measured result (Source) averaged over the Trigger Period is
greater/lower than the threshold value (Level). In other cases, recording doesn’t
start, but if it has been already started it can be continued until Recording Time
has elapsed.
If during Recording Time a trigger condition
appears, recording will be prolonged for
another Recording Time from the moment of
that trigger condition and so on.
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