Setting Criteria For Pre-Trigger Measuring (Pre-Trig) - Hioki Memory HiLogger LR8401-20 Instruction Manual

110
5.1 Triggering Measurement Start and Stop

Setting Criteria for Pre-Trigger Measuring (Pre-Trig)

T
[Pre-Trig]
Set the amount of time to record before each trigger
event.
To also measure the waveform after triggering, the recording
time must be set longer than the pre-trigger time.
(See "Pre-Trigger and Recording Times" below.)
HiLogger pre-trigger time can be set up to 99 days. Logger Utility settings
of 100 days or more are reduced to 99 days when transferred to the
HiLogger.
Difference between
When measurement is started, the specified pre-trigger length is recorded. This period is indicat-
ed as the [Waiting for
After the specified pre-trigger length has been recorded, the period indicated as
ger] continues until a trigger occurs.
[
During the Waiting for pre-trigger
Pre-Trigger and Recording Times
When the recording time is shorter
than pre-trigger time
Recording
(10 min)
Pre-Trigger (15 min)
When trigger timing is set to
waveform following the trigger can be measured, but a specified
span of the waveform before triggering as well.
However, when trigger timing is set to [Stop], pre-trigger settings are
disabled.
Make these settings on the
"Key Setting Procedure" (p .103)
See:
[
Waiting for pre-trigger
pre-trigger].
]
interval, trigger criteria are ignored.
Measurement ends
with the trigger event
T
[Start] or to
[Trig & Alm] screen.
Increment/decrement by 1
(when the recording interval is longer than 2 seconds,
increment/decrement by one recording interval)
Increment/decrement by 10
(when the recording interval is longer than 10 seconds,
increment/decrement by one recording interval)
] and [
Waiting for trigger
When the recording time is longer than
pre-trigger time
Measuring before
and after triggering
Recording
T
(15 min)
Pre-Trigger (5 min)
[Start/Stop], not only the
The maximum settable
time is displayed.
]
[Waiting for trig-
Ends when the record-
ing time has elapsed