Major tech MT915, Instruction Manual

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4.2. Beep alarm test
1. Press the “TEST” button in on the Cable Identifier.
2. Connect the 2 Croc Clips to both sides of a cable to check the
continuity. If the cable is fine a beep sound will be heard.
4.3. Voltage Check
1. Press the “V check” button to down use receiver of 2 Croc clips.
2. Connect the Black alligator to the “COM” reference and connect the Red
alligator to the cable port, if two digit blue LED display is “ UU ” this
proves the cable has voltage. Only check is mainly voltage.
4.4. Digital Multimeter Test
4.4.1. AC/DC Voltage Measurements
1. Insert the black test lead into the negative COM terminal and
the red test lead into the positive V terminal.
2. Set the function switch to VAC or VDC position.
3. Connect the test leads in parallel to the circuit under test.
4. Read the voltage measurement on the LCD display.
4.5. AC/DC Current Measurements
1. Set the function switch to the μA/mA position.
2. Insert the black test lead into the negative COM terminal and the red
test lead into the positive μA/mA terminal.
3. For current measurements up to 2000μA DC/AC, set the function switch
to the mA position
4. Press the MODE button to indicate “DC” / “AC” on thedisplay.
5. Remove power from the circuit under test, then open up the circuit at
the point where you wish to measure current.
6.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.
7. Apply power to the circuit.
8. Read the current in the display
4.6. Resistance Measurement
1. Set the function switch to the Ω position.
2. Insert the black test lead into the negative COM terminal and the red
test lead into the positive Ω terminal.
CAUTION: Beep if less than 100Ω.
CAUTION: Check voltage range at 5V to 16V DC.
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.