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5. Diode test (Picture 4)
5.1 Insert the red test lead into the
COM jack.
5.2 Switch the dial to
measurement
negative poles of the diode measured.
5.3 0.08 V ≤ reading <1.2 V: The meter beeps once indicating the diode is
normal. Reading <0.08 V: The buzzer beeps continuously indicating the
diode is damaged. For the silicon PN junction, the normal value is generally
about 500~800 mV.
Note:
•
If the diode is open or its polarity is reversed, the LCD will display "OL".
•
Before measuring the diode online, switch the circuit's power supply off
and fully discharge all capacitors.
•
To avoid personal injury, do not input voltages higher than 30 V.
6. Non-contact AC electric field sensing (NCV, Picture 5)
6.1 Switch the dial to NCV position, the meter will beep once. The meter
defaults to "EFHI".
6.2 Move NCV sensing end close to a charged electric field (socket, insulated
wire, etc.), the LCD will display the segment "-" and the buzzer will beep
with red flashing LED. As intensity increases, the more segments (----)
are displayed and the higher the frequency of buzzer beeps and red LED
flashes.
The sensitivity of electric field sensing is divided into EFHI and EFLo.
Select between them by pressing the SELECT button. Select EFHI when
the electric field is around 220 V (AC) 50 Hz/60 Hz. Select EFLo when the
electric field is around 110 V (AC) 50 Hz/60 Hz.
Note:
•
Make sure that the NCV sensing part (end of the clamp jaws) is close to the
electric field being measured, otherwise the sensitivity will be affected.
To avoid personal injury, when the measured electric field voltage is ≥100 V
•
(AC), check whether the conductor is insulated.
7. Auto power off
The meter will automatically shut down after 15 minutes without operating the
function switch.
position, press the SELECT button to select diode
, and connect the test leads with the positive and
CLAMP METER DCM 2
Picture 5
jack and the black one into the
NC V
GB
7
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