7.2 Event Detection Method
120
❖ For details on the Event waveform recording method: Event Waveform Recording Method (page
216)
Harmonic voltage distortion
Reference waveforms are formed above and below
the voltage waveform with an interval of 200 ms and
with an offset equivalent to the threshold value, then
detection is performed by comparing the measured
waveform with these reference values.
External event
External events are detected either when the external control terminal (EVENT IN) is shorted, or
at the falling edge of the input pulse signal.
Voltage and current waveforms can be recorded along with measured values upon occurrence of
external events.
❖ (See Chapter 8.)
Manual event
Manual events are detected when and are pressed simultaneously.
Voltage and current waveforms can be recorded along with measured values upon occurrence of
manual events.
Activates when the external event is set to ON.
Timer event
A trigger event occurs after each specified interval, and is recorded as an external event.
HARDWARE
Timer
Select from pull-
down menu
Confirm
1. Set the Timer function.
EVENT
2. Set the output interval.
1 min, 5 min, 10 min, 30 min, 1 hour, 2 hour
Upon starting measurement, timer
events are recorded at the predeter-
mined intervals (output interval set-
ting) from the start time.
When the event timer is selected, external event setting i
forced ON.
Interval
Measurement
Start
EVENT
Recording
Interval Interval Interval
Ext
EVENT
Recording
Ext
EVENT
Recording
Ext
EVENT
Recording
Ext