Aktakom AMM-1048 User Manual - Page 4

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Operation

AC/DC VOLTAGE MEASUREMENTS

CAUTION: Do not measure AC/ DC voltages if a motor on the circuit is being switched ON or OFF.

Large voltage surges may occur that can damage the meter.

1. Set the function switch to the green V position.

2. Press the MODE button to indicate "DC" or "AC" on the display.

3. 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.

Read the voltage in the display

DC/AC CURRENT MEASUREMENTS

Set the function switch to the µA/mA position.

2. For current measurements up to 4000µA DC/AC, set the function switch to the mA position

3. Press the MODE button to indicate "DC" / "AC" on the display.

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

NOTE: 0.2A/500V fast acting Resettable Fuse current inputs and Overload protection on mA, µA

ranges. No replacement required.

RESISTANCE MEASUREMENT

WARNING: To avoid electric shock, disconnect power to the unit under test and discharge all capacitors

before taking any resistance measurements. Remove the batteries and unplug the line cords.

1. Set the function switch to the Ω

2. Press the MODE button to indicate on the display.

3. Touch the test probe tips across the circuit or part under test. It is best to disconnect one side of the part

under test so the rest of the circuit will not interfere with the resistance reading.

4. Read the resistance in the display

CONTINUITY CHECK

WARNING: To avoid electric shock, never measure continuity on circuits or wires that have voltage on

them.

1. Set the function switch to the Ω

2. Press the MODE button to indicate on the display

3. Touch the test probe tips to the circuit or wire you wish to check.

4. If the resistance is less than approximately 150, the audible signal will sound. If the circuit is open, the

display will indicate "OL".

DIODE TEST

1. Set the function switch to the Ω

2. Press the MODE button to indicate

3. Touch the test probes to the diode under test. Forward voltage will typically indicate 0.400 to 0.700V.

Reverse voltage will indicate "OL". Shorted devices will indicate near 0V and an open device will indicate

"OL" in both polarities

position.

on the display.