17
DC current measurement
Make certain that all test leads are disconnected from the meter terminals. Open
and close the clamp jaw several times to demagnetize the clamp jaw before taking
any DC current measurement.
- Set function switch to the A range.
- Press AC/DC key to select DC function.
- Press ZERO key to enter the zero mode.
- Before measuring current large than 40A, adjust the scale to 400A range by
pressing the RANGE key then perform auto zero operation.
- Clamp the current transducer (jaw) around one of the conductors under test. Make
sure that the clamp jaw be perfectly closed.
- Read the display value.
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