Netzerotools Extech 450, Руководство пользователя

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EX450-EU_ENG V3.1 10/07 9
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
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 SELECT 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 150  , 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
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 SELECT 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.
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