TACKLIFE DM01M, Руководство пользователя

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• Measurement of electric resistance
1. Turn the rotary switch to the appropriate position.
2. Connect the test lead in black and test lead in red to COM input socket and V/
Ω input socket
respectively.
3. Use another two ends of the test lead to measure the electric resistance of the circuit to be measured.
4. Read the measured electric resistance value on LCD screen.
Notes:
* The measured value of the electric resistance of the circuit differs a bit from the rated value of the
electric resistance.
* To ensure measurement accuracy, in attempting a low resistance measurement, first put two pen-shaped
meters in short circuit and capture the resistance reading of these short circuits. Then subtract the
aforesaid reading from the measured resistance.
* At 60M
Ωp osition, you have to wait a few seconds before the reading grow stable. This is quite normal
for a high resistance measurement.
* When the meter is in open circuit, the display unit will show "OL" that indicates the measured value
is over the measuring range.
3.2.3 Diode test
To avoid the meter or the measured equipment from damage, do not attempt a diode test
unless the operator has already cut off all power sources for the circuit to be measured and fully
discharged all high-voltage capacitors.
• Diode test outside the circuit:
1. Turn the rotary switch to the position .
2. Connect the test leads in black and in red to COM input socket and
V/Ωi nput socket respectively.
3. Connect the test leads in black and in red to the positive and negative poles of the diode to be
tested respectively.
4. The meter displays the forward bias value of the diode to be tested. If the polarity of the test lead
is reversed, the meter will display "OL".
A normal diode still produces a forward voltage drop of 0.5V to 0.8V; the reverse bias voltage
reading depend on the variation in electric resistance of other channels between two pen-shaped
meters.
3.2.4 Beep continuity test
To avoid the meter or the measured equipment from damage, do not attempt a beep continuity
test unless the operator has already cut off all power sources for the circuit to be measured and fully
discharged all high-voltage capacitors.
• Steps for a continuity test:
1. Turn the rotary switch to the position .
2. Connect the test lead in black and test lead in red to COM input socket and
V/Ω input socket
respectively.