6
Refer the Measuring DC Voltage a.b.d.
a.
means you can’t input the voltage more than 750V, it’s possible to show higher
voltage, but it may destroy the inner circuit or pose a shock.
3. Measuring DC Current
1>
Connect the black test lead to COM jack, connect the red test lead to the mA jack once
measuring current below 200mA and connect the red test lead to 20A jack once the
measuring current is between 200mA to 20A.
2>
Set the rotary switch at the desired A
range position, connect the test leads in series
with the load under measurement, you can get the reading from LCD, the polarity of
the red lead connection will be indicated along with the current value.
NOTE
a.
When the value scale to be measured is unknown beforehand, set the range selector
at the highest position.
b.
When only the figure’1’ is displayed, it indicates over-range situation and the higher
range has to be selected.
c.
The socket mA’s maximum current is 200mA.
d.
Since 20A is not fused, the measuring time should be less than 10 seconds to prevent
precision from affecting by circuit heating.
4. Measuring AC Current
1>
Connect the black test lead to COM jack, connect the red test lead to the mA jack once
measuring current below 200mA and connect the red test lead to 20A jack once the
measuring current is between 200mA to 20A.
2>
Set the rotary switch at the desired A
～
range position, connect the test leads in series
with the load under measurement.
NOTE
a.
Refer the Measuring DC Current a.b.c.d.
5. Measuring Resistance
1> Connect the black test lead to COM jack and red to V/Ω jack.
2> Set the rotary switch at the desiredΩrange position and connect the test leads across
the resistance under measurement.
NOTE
a.
For measuring resistance above 1MΩ, the meter may take a few seconds to get
stable reading.
b.
For measuring high resistance, connect the resistance to V/Ω and COM jacks to avoid
interference.
Summary of Contents for DM 81
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