Wabtec Nieaf-Smitt NI 74, Руководство пользователя

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4.3 DC current measurement
CAUTION: Do not make 20 A current measurements for longer
than 30 seconds. Exceeding 30 seconds may cause damage to the
meter and/or the test leads.
1. Insert black test lead banana plug into the negative COM jack.
2. For current measurements up to 6000µA DC, set the function switch to
the µA position and insert the red test lead banana plug into the µA/
mA jack
3. For current measurements up to 600mA DC, set the function switch to
the mA position and insert the red test lead banana plug into the µA/
mA jack
4. For current measurements up to 20A DC, set the function switch to the
10A/HZ/% position and insert the red test lead banana plug into the
10A jack
5. Press the MODE button to indicate “DC” on the display
6. Remove power from the circuit under test,
then open up the circuit at the point
where you wish to measure current
7. Touch the black test probe tip to the
negative side of the circuit
8. Touch the red test probe tip to the
positive side of the circuit
9. Apply power to the circuit
10. Read the current in the display