Duratool D03305 Посібник із швидкого старту - Сторінка 6
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RESISTANCE MEASUREMENT
•
Red lead to "VΩmA". Black lead to "COM".
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Set RANGE switch to desired Ω position.
•
If the resistance being measured is connected to a circuit, turn off power and
discharge all capacitors before measurement.
•
Connect test leads to circuit being measured.
•
Read resistance value on the display.
DIODE MEASUREMENT
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Red lead to "VΩmA", Black lead to "COM".
•
Set RANGE switch to "
•
Connect the red test lead to the anode of the diode to be measured and black
test lead to cathode.
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The forward voltage drop in mV will be displayed. If the diode is reversed,
figure "1" will be shown.
TRANSISTOR hFE MEASUREMENT
•
Set RANGE switch to the hFE position.
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Determine whether the transistor is PNP of NPN type and locate the Emitter,
Base and Collector leads. Insert the leads into the correct pins of the hFE
socket.
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The meter will display the approximate hFE value at the condition of base
current 10μA and VCE2.8V.
AUDIBLE CONTINUITY TEST
•
Red lead to "VΩmA", Black lead to "COM".
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RANGE switch to "
•
Connect test leads to two points of circuit to be tested. If the resistance is
lower than 30Ω ± 20Ω, the buzzer will sound.
CABLE TEST OPERATION For example：test of double-twisted cables.
•
Put cables into both main tester and remote tester.
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The LEDs of the main tester will turn on sequentially from 1 to G.
Main Tester:
Remote Tester:
Fault description:
•
The following are abnormal connections:
•
If one cable for example cable No.3 is open circuit, the two No.3 LEDs of the
main tester and remote tester will not turn on.
" position.
" position.
1-2-3-4-5-6-7-8-G
1-2-3-4-5-6-7-8-G (RJ45)
1-2-3-4-5-6 (RJ11)
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