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DC CURRENT MEASUREMENTS
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 the black test lead banana plug into the negative
COM
jack.
2. For current measurements up to 6000µA DC, set the function switch to
the yellow
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 yellow
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 yellow
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.
Touch the red test probe tip to the positive side of
the circuit.
8. Apply power to the circuit.
9. Read the current in the display.
JTM-105a V3.0 10/07
9