Clamp Adaptor Measurements Ac/Dc - Extech Instruments MM750W User Manual

CLAMP ADAPTOR MEASUREMENTS AC/DC

1. Turn the rotary switch to the clamp adaptor position
2. Press the M button to indicate AC ' ' or DC ' ' on the display.
3. Connect the external clamp adaptor's negative lead to the meter's COM jack.
4. Connect the external clamp adaptor's positive lead to the meter's positive jack.
5. The meter displays 1A per each mV input (for example, with a 3mV input, the
meter will display 3A).
6. Take a current measurement with the external clamp adaptor and read the
current on the meter display.
7. For AC, Press the Hz/% button to indicate 'Hz'. Read the frequency on the display.
8. For AC, Press the Hz/% button again to indicate '%'. Read the duty cycle on the
display.
9. Press the Hz/% button to return to current measurement.
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