Dawson Tools DDM450 Manual - Halaman 5

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3. DC /AC Current (large):<10A

1.Turn rotary switch to A position.

2.Press FUNC to select DC or AC current.

3.Connect leads in series to circuit.

4.Read current measurement on the display.

4. DC /AC Current (

Medium

):<400mA

1.Turn rotary switch to mA position.

2.Press FUNC to select DC or AC current.

3.Connect leads in series to circuit.

4.Read current measurement on the display.

5. DC /AC Current (Small):<4000µA

1.Turn rotary switch to µA position.

2.Press FUNC to select DC or AC current.

3.Connect leads in series to circuit.

4.Read current measurement on the display.

DDM450

6.1 Continuity:

1.Turn rotary switch to multifunction position

2.Press FUNC to switch to continuity mode

3.Connect leads across circuit.

4.If measured resistance is less than 50 , the buzzer will sound

6.2 Diode Test:

1.Turn rotary switch to multifunction position.

2.Diode mode is default mode.

3.Connect INPUT lead to anode (+) and COM lead to cathode (-).

4.Read measured forward-biased voltage drop.

7. Resistance:<40MΩ

1.Turn rotary switch to resistance position.

2.Connect leads across circuit.

3.Read resistance measurement on the display.

DDM450