YOKOGAWA SL1400 - Page 229

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IM 701240-01E
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App
Index
Triggering
Selecting the Target Waveform
14. Press the Select CH soft key. The channel selection menu appears.
15. Use jog shuttle+SELECT to select the target channel.
Setting the Window Width
16. Press the Width soft key.
17. Turn the jog shuttle to set the window width.
Setting the Hold Off
18. Set the hold off time according to the procedures given in section 6.4.
Explanation
This trigger is used to detect abnormalities in the power waveform (disruption, sag,
surge, frequency fluctuation, voltage drop, etc.). A realtime template is created
automatically using 1 to 4 waveforms before the current waveform, and comparison is
made between the current waveform and the realtime template. A trigger occurs if the
current waveform falls outside the realtime template.
4 previous waveforms
Current waveform
Power supply
waveform
Averaged waveform
of 1 to 4 waveforms
Realtime template
Averaged waveform
+ tolerance width
Compare the current waveform against
the realtime templateTrigger activated
when the current waveform falls outside
the realtime template
Trigger activated
here
Disruption
(Trigger)
Sag
(Trigger)
Sag
(Trigger)
Surge
(Trigger)
Realtime
template
6.17 Setting the Wave Window Trigger (ENHANCED)