Major tech MT1881 IV Manual de instrucciones - Página 11
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6.7. DIODE TEST
1. Set the function switch to the Ω CAP
2. Insert the black test lead banana plug into the
negative COM jack and the red test lead banana
plug into the positive V jack.
3. Press the MODE button to indicate "
on the display.
4. 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.
6.8. CAPACITANCE MEASUREMENTS
WARNING: To avoid electric shock, disconnect power to the unit
under test and discharge all capacitors before taking any capacitance
measurements. Remove the batteries and unplug the line cords.
1. Set the rotary function switch to the Ω CAP
position.
2. Insert the black test lead banana plug into the
negative COM jack.
3. Insert the red test lead banana plug into the
positive V jack.
4. Touch the test leads to the capacitor to be tested.
Read the capacitance value on the display
6.9. FREQUENCY MEASUREMENT
1. Set the function switch to the Hz/Duty position.
2. Insert the black test lead banana plug into the negative jack (COM) and
the red test lead banana plug into the positive jack (F).
3. Touch the test probe tips to the circuit under test.
4. Read the frequency on the display. The digital reading will indicate the
proper decimal point, symbols (Hz, kHz, MHz ) and value.
NOTE: Press the mode key to select the frequency or the duty cycle
measuring.
position.
" and "V"
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