Stop voltage setting①
In the decay time measurement, the EA-5J monitors the time taken for the plate to
discharge from the start voltage 1,000 V to the stop voltage. This stop voltage can()
be set from 5 to 100 V in 5 V increments or decrements by pressing UP/DOWN
()button. Default setting: 100 V
LCD display
Measuring time setting②
The measuring time for the decay time can be chosen from five kinds of the following
setting.
LCD display : Measuring time
10 : 10 seconds
30 : 30 seconds
60 : 60 seconds
120 : 120 seconds
300:300seconds
()Default setting: 10
LCD display
5.5 Sensor plate placement
After all settings are complete, turn the power off by pressing POWER buttonblue.()
Place the sensor plate in front of an ionizer for the measurement. Refer the standard like
"ANSI/ESD-STM3.1-2000" to confirm positions and the distance from the ionizer to the
sensor plate. Use threads on the back of the sensor plate for installing a tripod of
camera etc. See a photograph in the next page for reference about the position of the
ionizer, EA-5J controller and the sensor plate.
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