Major tech MT760 사용 설명서 - 페이지 11
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10. NCV non-contact electric field measurement (Figure 7)
If you want to measure whether there is AC voltage or
electromagnetic field, place front end of clamp head 8~15mm
close to the test piece, analog quantity of inductive AC voltage
is about ≤ critical voltage 100V, display "EF", < critical voltage
100V, display"-", it has four"----" levels based on voltage size
with different buzzing at each level, with NCV light flashing to
discriminate electric field intensity .
When ranges switch NCV measurement, please unplug the test
lead to avoid electric shock.
11. Other functions
•
HOLD key for 2s to turn on or turn off LCD backlight function.
•
Automatic power-off: when measuring, if the rotary button has not
been moved for 15 minutes, the instrument will automatically power
off to save energy. In automatic power-off mode, turn rotary button
to OFF and restart the machine, or click any key to wake the
instrument.
•
Turn off automatic power-off function: press and hold SELECT key,
then power-on start, you will hear 5 buzzing which means automatic
power-off function is cancelled. Turn off and restart the machine,
automatic power-off function will be recovered.
•
The buzzer will send out 5 warnings 1 minute before automatic
power-off. A long buzz will be heard before power off. When
automatic power-off function is canceled, you will hear 5 continuous
warnings every 15 minutes.
•
Buzzer: press any key or rotate function switch, if such function key is
valid, buzzer will "beep" once (lasting approx. 0.25s). In gear, when
figure 7.
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