Dc Current Measurements; Ac Current Measurements - Craftsman 82170 Owner's Manual

DC CURRENT 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 200mA DC, set the function switch to
the highest DC mA position and insert the red test lead banana plug
into the (mA) jack.
3. For current measurements up to 20A DC, set the function switch to the
20A range and insert the red test lead banana plug into the (20A) jack.
4. Remove power from the circuit under test, then open up the circuit at
the point where you wish to measure current.
5. 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.
6. Apply power to the circuit.
7. Read the current in the display. For mA DC measurements, reset the
function switch to successively lower mA DC positions to obtain a
higher resolution reading. The display will indicate the proper decimal
point and value.

AC CURRENT MEASUREMENTS

WARNING: To avoid electric shock, do not measure AC current on any
circuit whose voltage exceeds 250V AC.
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 200mA AC, set the function switch to
the highest AC mA position and insert the red test lead banana plug
into the (mA) jack.
3. For current measurements up to 20A AC, set the function switch to the
20A range and insert the red test lead banana plug into the (20A) jack.
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