Major tech MT874 Instruction Manual - Page 13

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6.3. DC Current Measurement

CAUTION: Do not make current measurements on the 10A 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 COM Input Jack.

2. For current measurement up to 200mA DC, set the function switch to

the highest DC mA Position and insert the red test lead banana plug

into the Positive Input Jack.

3. For current measurement up to 10A DC, set the function switch to the

10A range and insert the red test lead banana plug into the 10A Input

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.

8. For mA DC measurements, reset the function switch to successively

lower mA DC position to obtain a higher resolution reading, the display

will indicate the proper decimal point and value.