－ 10 －
－ 9 －
1. Do not apply any input signal exceeding the max.
rated value for each function.
2. Do not switch the function while measuring.
3. Do not hold the tip side of the barrier of the
measurement probe or the tip side of the barrier of
the alligator clip while measuring.
Do not use the instrument if the body, the measurement
probe, the alligator clip, or the earth lead look damaged.
Make sure the low battery indicator is off after power-on.
Replace the battery with new ones (all 4 pieces) if the
indicator is on.
Note:
If the MΩ test button is set ON when the power is turned
on,
will be shown on the display and the beeper
sounds. To make the instrument ready to use, release and
lay down the test button again.
4-8 Auto Power Off
Approx. 10 min. after the last button operation, the
beeper sounds (10 times) and the power will be turned off
automatically.
4-9 Low Battery Indication
Decreasing the internal battery voltage to below approx.
4.0 V (4.3 V when 500 V is selected as a test voltage) due
to wearing out turns on
on the display. Replace all 4
batteries with new ones when the indicator turns on.
Note:
Decreasing the internal battery voltage to a voltage that
the instrument does not work due to wearing out indicates
on the numeric part of the display.
[5] MEASURING PROCEDURE
WARNING
5-1 Pre-operational Check
WARNING
CAUTION
* In the case nothing is displayed, the batteries may be
completely worn out.
Inspection of the display
All segments of the display, LCD backlight and all LEDs will
be turned on for approx. 1 sec. after power-on. Check for
display defects.
Inspection of disconnection
Set to function, and make sure the beeper sounds when
the measurement probe is connected to the alligator clip.
4-7 MΩ test button
(MΩ function)
Press the top of the button to generate a test voltage
just while the button is pressed. To make continuous
measurement, set the button up.
To stop the measurement, release the button or lay it down
again. The last reading on the display and the LED level
meter will be held.
The reading will be held until the next measurement and
the LED level meter will be turned off approx. 5 sec. later.
Set the MΩ test button up.
Press the MΩ test button.