Jensen DT-985, Руководство пользователя

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8
RESISTANCE MEASUREMENTS
WARNING: To avoid electric shock, disconnect power to the unit under test and discharge
all capacitors before taking any resistance measurements. Remove the batteries and
unplug the line cords.
1. Set the function switch to the green Ω  CAP  position.
Insert the black test lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive

jack.
2. Press the MODE button to indicate “

"

on the display.
3. Touch the test probe tips across the circuit or part under test. It is best to
disconnect one side of the part under test so the rest of the circuit will not interfere with
the resistance reading.
4. Read the resistance in the display.
CONTINUITY CHECK
WARNING: To avoid electric shock, never measure continuity on circuits or wires that have
voltage on them.
1. Set the function switch to the green Ω CAP position.
2. Insert the black lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive

jack.
3. Press the MODE button to indicate”  " and “

Ω” on the display
4. Touch the test probe tips to the circuit or wire you wish to check.
5. If the resistance is less than approximately 50

, the audible signal will sound. If the
circuit is open, the display will indicate “ OL ”.
DIODE TEST
1. Set the function switch to the green Ω CAP position.
2. Insert the black test lead banana plug into the negative COM jack and the red test lead
banana plug into the positive V jack.
3. Press the MODE button to indicate and V on the

display.
4. Touch the test probes to the diode under test. Forward voltage will typically indicate 0.400
to 0.700V. Reverse voltage will indicate “ OL ”. Shorted devices will indicate near 0V and
an open device will indicate “ OL ” in both polarities.