EXTECH EX380926 [4/10] Operating instructions

380926 -EN-V7.1-3/12

OPERATING INSTRUCTIONS

Current Measurements using the Clamp, DC/AC

WARNING: Make sure that the test leads are disconnected from the meter’s terminals before

making current measurements with the clamp jaw.

WARNING: For safety, use the rubber input terminal cover when measuring current using the

Clamp.

1. Set the Function switch to 2000A position.

2. Press the FUNC key to select AC or DC current

3. For DC current measurements, push & hold

the DCA ZERO button until the reading

indicates zero.

4. Press the trigger to open jaw. Fully enclose

the conductor to be measured (see

diagram).

5. The clamp meter will automatically select

the proper range (Auto Range). To select

the range manually, press the RANGE

button before pressing DCA ZERO button.

6. Read the measured value from the LCD

display.

NOTE: If the DCA zero button is used to zero the

meter, the clamp meter remains in the auto-range mode. If the REL button is used, the

clamp meter will be placed in the manual range mode.

Current Measurements using the Test Leads, DC/AC

1. Set the Function switch to the mA or µA position.

2. Press the FUNC key to select AC or DC.

3. Connect the black test lead to the COM terminal and the red test

lead to the mA µA input jack.

4. Break the circuit under test (put the meter in series with circuit

under test) refer to diagram.

5. Read the measured value from the LCD display.

NOTE: The maximum reading for direct input current is 240mA AC/DC.

INCORRECT

More than one

conductor in jaws

CORRECT

One conductor in jaws

µA and mA

Current