Hioki IR4052 - 2.9 PVΩ Measurement IR4053

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2.7 Voltage Measurement
2.7.1 Negative Voltage Detection
When measured voltage is -1 V or lower, the display lights in red
and white alternately. It is easy to find a reversed connection
while checking open voltage of a solar cell string. The factory
default is set to ON.
Setting method
IR4053
1.
Hold and set the rotary switch to “V”.
2.
“—” and “V” blink and “ON” or “OFF” will be indicated.
3.
Pressing switches between ON and OFF.
ON: When measured voltage is -1 V or lower, the dis-
play lights in red and white alternately.
OFF: Disables this function.
When no operation is made until approximately two
seconds after ON or OFF is selected, the setting chosen
will be fixed and measurement screen appears.
HIOKI IR4051A981-09