Extech Instruments EX530 Guide de l'utilisateur télécharger pdf (Page 10)

EX530-EU_ENG V3.4 1/08

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 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 35Ω, 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 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.

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Extech Instruments EX530 Guide de l'utilisateur Page 10