Extech Instruments EX410 Guia do Utilizador Página 9

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EX410-EU-EN V5.4 7/13
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 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. Touch the test probe tips to the circuit or wire you wish to check.
4. If the resistance is less than approximately 150, the audible signal
will sound. If the circuit is open, the display will indicate “1”.
DIODE TEST
1. Insert the black test lead banana plug into the negative COM jack and
the red test lead banana plug into the positive diode jack.
2. Turn the rotary switch to the position.
3. Touch the test probes to the diode under test. Forward bias will
typically indicate 400 to 1000. Reverse bias will indicate “1 ”.
Shorted devices will indicate near 0 and the continuity beeper will
sound. An open device will indicate “1 ” in both polarities.
TEMPERATURE MEASUREMENTS
1. Set the function switch to the TEMP position.
2. Insert the Temperature Probe into the Temperature Socket,
making sure to observe the correct polarity.
3. Press the ºC or ºF button for the desired units.
4. Touch the Temperature Probe head to the part whose
temperature you wish to measure. Keep the probe touching
the part under test until the reading stabilizes.
5. Read the temperature in the display.
Note: The temperature probe is fitted with a type K mini
connector. A mini connector to banana connector
adaptor is supplied for connection to the input banana
jacks.
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