KYORITSU 5000 Instruction Manual - Manual (Page 29)

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(2) Event recording mode
¡ Current detection and RMS calculation
Sampling is performed consistently at 1.6ms intervals. Current is
detected by comparing the 1/√2 times of the peak value of sine
wave and the preset current value. At the same time, RMS is
calculated at 100ms based on the sampling data at every 3.3ms.
¡ Recording
When the preset current detection value is exceeded (Point A), the
instrument records 8 data points including:
- 3 RMS values prior to the cross over point
- RMS value at the cross over point
- 4 RMS values subsequent to the cross over point.
The peak value when detecting is recorded with time information.
In case the event that exceeds the current detection value occurs
continuously, current will not be detected until it drops to 50% or less
of preset current value as the last detected leakage current is
remaining.
¡ Display of measured value
At measurement state before a recording, the max. measured value
(RMS) at the selected channel is displayed on the LCD at every 1
sec..