Amprobe ACD-330T Clamp-On-Multimeter Manuel d'utilisateur télécharger pdf (Page 33)

DIODE CHECK

A good diode allows current to flow in one direction only.To test a diode, turn the

power off, remove the diode from the circuit, and proceed as follows:

1 ) Set the rotary switch to " "position.

2) Connect the black test lead to "COWterminal and red test lead

to " V-Ω "terminal.

3) Touch the red lead to the positive side of the diode and the black lead to the neg-

ative side. The meter can display diode voltage drops to approximately 2.5 V.A typ-

ical voltage drop is 0.3~0.8 V, and the meter will sound a beep to remind user.

4) Reverse the probes and measure the voltage across the diode again. If the diode is:

• Good : " OL" is displayed.

• Shorted : Near 0 V drop is displayed in both directions, and the

beeper sounds continuously.

• Open : " OL" is displayed in both directions.

5) Repeat step 3 and 4 for other diodes.

Figure 22. Diode Check.

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 41 42

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Amprobe ACD-330T Clamp-On-Multimeter Manuel d'utilisateur Page 33