KYORITSU 3128 - Manual (Page 74)

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KEW3128
6. Measurement KEW3128
Use of Guard Terminal at high resistance measurements
It may take longer time to obtain accurate readings when measuring high
resistances of 100GΩ or higher while the instrument is operated with
battery instead of an external power supply.
In this case, wind the Guard Cord connected to the Guard Terminal to the
Earth Cord. Then accuracy of the readings gets better.
6.11.2 Backlight Function
This function to facilitate working at dimly illuminated location or at nighttime
work. Press the Backlight Button when the Range Switch is at any position
other than “OFF”. The Backlight will light up for about 1 min., and then
turned off automatically.
6.11.3 Auto-power-off Function
The instrument automatically turns off approx. 10 min after the last switch
operation. When measurements are conducted with Timer Function, the
instrument automatically turns off approx. 10 min after measurement. To
return to the normal mode, turn the Range Switch to the OFF position, then
to the desired position.
LI
N
E
Guard Cord
Earth Cord