- 13 -
AC Current (Frequency, Duty Cycle) Measurements
CAUTION:
Do not make current measurements on the 20A scale for longer
than 30 seconds. Exceeding 30 seconds may cause damage to the meter
and/or the test leads.
1. Insert the black test lead banana plug into the negative
COM
jack.
2. For current measurements up to 4000μA AC, set the function switch to
the yellow
μ
position and insert the red test lead banana plug into the
μA
/
mA
jack.
3. For current measurements up to 400mA AC, set the
function switch to the yellow
m
position and insert
the red test lead banana plug into the
μA
/
mA
jack.
4. For current measurements up to 10A AC, set the
function switch to the yellow
10
/
HZ
position and
insert the red test lead banana plug into the
10A
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. Touch the
red test probe tip to the “hot” side of the circuit.
8. Apply power to the circuit.
9. Read the current in the display.
10. Press the
Hz/%
button to indicate “
Hz
”.
11. Read the frequency in the display.
12. Press the
Hz/%
button again to indicate “
%
”.
13. Read the % duty cycle in the display.
14. Press the
Hz/%
button to return to current measurement.
