KYORITSU 5020 Instruction Manual - Manual (Page 30)

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2. Trigger Recording mode
● Detection and RMS value calculation
Sampling the inputs at every 1.6ms and comparing the Peak value
(sampled crest value converted to sine RMS value) and Detection level.
For current, when the Peak value exceeds the level and for voltage
when the Peak value is below the level; detection is triggered. RMS
value is calculated at every 100ms.
● Recording
When the Detection level is exceeded, 8 data (for about 0.8 sec)
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
are recorded with time information. In case that events exceeding the
Detection level occur continuously, next detection doesn't start until it
drops to 50% or less of the detected value.
(for voltage, 5% or more than the detected value)
● Display of measured value
Average of RMS value is displayed on the LCD at every 1 sec.
(10 data)