Major tech MT957 Manual de instruções - Página 11
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DIODE TEST
WARNING: To avoid electric shock, do not test any diode that has
voltage on it.
1.
Set the function switch to
2.
Press the
3.
Insert the black test lead banana plug into the negative (-) jack
(COM) and the red test lead banana plug into the positive (+) jack
(Ω).
4.
Touch the test probe tips to the diode or semiconductor junction
you wish to test. Note the meter reading.
5.
Reverse the probe polarity by switching probe position. Note this
reading.
6.
The diode or junction can be evaluated as follows:
A.
If one reading shows a value and the other reading shows OL,
the diode is good.
B.
If both readings show OL, the device is open.
C.
If both readings are very small or 0, the device is shorted.
NOTE: The value indicated in the display during the diode check is
the forward voltage.
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 function switch to the CAP position.
("nF" and a small value will appear in the display).
2.
Insert the black test lead banana plug into the negative (COM) jack
and the red test lead banana plug into the positive Ω jack.
3.
Touch the test leads to the capacitor to be tested. The display will
indicate the proper decimal point, value and symbol.
button until the
position.
symbol appears in the display.