Duratool D03047 Manuale di istruzioni per l'uso - Pagina 6
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RESISTANCE MEASUREMENT
•
Red lead to "VΩmA". Black lead to "COM".
•
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
•
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.
•
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.
•
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.
•
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".
•
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.
TEST SIGNAL
•
Set RANGE switch to "
•
A test signal (50Hz) is produced between "VΩmA" and "COM" jack.
•
The output voltage is approx 5V p-p with 50KΩ impedance.
NOTE: OVERLOAD PROTECTION: 15 seconds maximum 220Vrms.
" position.
" position.
" position.
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