Sealey TA320 - Manual (Page 17)

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
Ω 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
35
Ω, 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.