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Measuring dc current (see figure 3), Measuring ac current - true rms (see figure 4) – Amprobe HD160C Digital-Multimeter User Manual

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Measuring DC Current (See Figure 3)

1. Set the Function Switch to a current function,

μA

,

mA

, or

2A

.

2. If AC is displayed, press the A� button to turn on

DC

.

3. If the 2A function is not selected and RANGE is displayed, press the RANGE button

to enable auto ranging.

4. Connect the test leads: Red to A�, Black to COM.
5. Turn off power to the circuit being measured.
6. Open the circuit (-X-) in which current is to be measured (voltage between this

point and ground must not exceed 1500 V dc).

7. Securely connect test leads in series with the load.
8. Turn on power to the circuit being measured.
9. Read the display, and, if necessary, correct any overload (OL or -OL) conditions.

Measuring AC Current - True rms (See Figure 4)

1. Set the Function Switch to a current function, μA, mA, or 2A.
2. If DC is displayed, press the A� button to turn on AC.
3. If the 2A function is not selected and RANGE is displayed, press the RANGE button

to enable auto ranging.

4. Connect the test leads: Red to A�, Black to COM.
5. Turn off power to the circuit being measured.
6. Open the circuit (-X-) in which current is to be measured (voltage between this

point and ground must not exceed 1000 V ac).

7. Securely connect test leads in series with the load.
8. Turn on power to the circuit being measured.
9. Read the display, and, if necessary, correct any overload (OL) conditions.