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4.4
AC current (frequency, duty cycle) measurement
CAUTION: Do not make 20A 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 AC, 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 AC, 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 AC, set the function switch to the
10A/HZ/% position and insert the red test lead banana plug into the
10 A jack
5.
Press the MODE button to indicate "AC" 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 neutral side of the circuit
8.
Touch the red test probe tip to the "hot" side of the circuit
9.
Apply power to the circuit
10. Read the current in the display
11. Press the Hz/% button to indicate "Hz"
12. Read the frequency in the display
13. Press the Hz/% button again to indicate "%"
14. Read the % duty cycle in the display
15. Press the Hz/% button to return to current measurement
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