Hioki MR8847-51, Measurement Manual

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25
Convenient functions
What is a pre-trigger?
It is a function that allows recording of waveforms before trigger points.
Merit Useful to detect signs before abnormal occurrences happen because
parts before the trigger point are recorded.
If the pre-trigger is
not used...
If the pre-trigger is not used, only the parts after the trigger point are
recorded. You will be able to observe the abnormal occurrence but will
not be able to detect any signs before that.
Waveforms without the pre-trigger function activated
Using the pre-
trigger allows you
to observe the part
before the abnormal
occurrence.
If the pre-trigger is used, waveforms including portions of those existing
before the trigger point are recorded, allowing you to detect signs
before the abnormal occurrences happen.
Pre-trigger
30%
Waveforms with 30% of the pre-trigger setting activated
Signs will appear before any abnormal occurrence or distortion
happens.
Using the pre-trigger of the Memory HiCorder, you can observe the
parts of the waveforms existing before any abnormal occurrences, and
find out which type of waveforms caused accidents and production
installation faults .
It is recommended using the trigger function to prevent accidents and
faults, as well as losses due to such occurrences.
10
9
8
7
6
5
4
3
2
1
Appx.
Ind.
HIOKI MR8847G963-03