6−6 Backlight Function; 6−7 Auto-Power-Off - KYORITSU KEW 3022 Instruction Manual

Releasing:
(1) Set the Range selector switch to theΩ(Continuity) position.
(2) Open the test leads: LINE (red) and EARTH (black).
(3) Press the Zero Ω ADJ.
displayed on the LCD while the Test button is locked or the
Remote control switch is pressed down .
Measurement:
(1) Set the Range selector switch to the Ω (Continuity)position.
(2) Connect the test leads to the equipment under test, and press the
Test button or Remote control switch.
Principle of operation:
Resistance = Voltage/ Current
Note:
¡ The zero Ω ADJ. function is available when the indicated value is
under 9 Ω.
¡ A beak in Test lead or fuse is suspected when "OL" is displayed on
the LED even if LINE (red) and EARTH (black) are shorted.
¡ Change the connection of LINE (red) and EARTH (black) when
measuring the voltage with the switched polarities.
¡ The measurement result at the resistance function may be effected
by the impedance or transient current in the operating circuit, which
is connected in parallel to the instrument.
6-6 Backlight function
To facilitate working in dimly lit situations, a
backlight function is provided which
illuminates the display. Press the backlight
key
to operate this function. The backlight
will light up for about 60 sec., and then turns
off automatically.
6-7 Auto-power-off
To prevent the instrument being left powered on and conserve battery
power, the instrument automatically turns off approx. 15 min. after the
last switch operation.
To turn on the instrument again, turn the Range selector switch to
OFF position once.
Then set it to the desired range.
key
to release this function when "OL" is
RX= V ／ I
Fig. 10
― 15 ―
Fig. 11