Major tech MT915 Руководство по эксплуатации - Страница 8
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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
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.
4.7. Continuity Check
1. Set the function switch to the
2. Insert the black test lead into the negative COM terminal and the red
test lead into the positive Ω terminal.
3. Press the MODE button to indicate
4. Touch the test probe tips to the circuit or wire you wish to check.
5. If the resistance is less than approximately 150Ω, the audible signal will
sound. If the circuit is open, the display will indicate "OL".
WARNING: To avoid electric shock, never measure Continuity
on circuits or wires that have voltage on them.
4.8 Diode Test
1. Set the function switch to the
2. Press the MODE button to touch the test probes to the diode indicate
the
on the display. 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
4.9. MAX Hold Button
To hold the highest reading on the LCD
1. Press the MAX hold button. The meter reading will not change as
readings change
2. Press the MAX hold button again to return to normal operation.
4.10. Hold Button
The Data Hold function allows the meter to "freeze" a
measurement for later reference
1. Press the "DATA HOLD" button to "freeze" the display, the "HOLD"
indicator will appear.
2. Press the "DATA HOLD" button to return to normal operation.
4.11. Auto Power Off
The auto off feature will turn the meter off after 15 minutes.
6 8
position.
on the display
position.