MM850592 ed. 01 - Mini MMX II
11
CONTINUITY CHECK
WARNING
T
O AVOID ELECTRIC SHOCK
,
NEVER MEASURE CONTINUITY ON CIRCUITS OR WIRES THAT HAVE VOLTAGE ON THEM
.
1. Set the function switch to the position.
2. Insert the black lead banana plug into the negative (-) jack (COM) and the red test lead banana plug
into the positive (+) jack (
Ω
).
3. Press the button until the symbol appears in the display.
4. Touch the test probe tips to the circuit or wire you wish to check.
5. If the resistance is less than approximately 150
Ω
, the audible signal will sound. The display will also
show the actual resistance.
DIODE TEST
WARNING
T
O AVOID ELECTRIC SHOCK
,
DO NOT TEST ANY DIODE THAT HAS VOLTAGE ON IT
.
1. Set the function switch to position.
2. Press the button until the symbol appears in the display.
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:
T
HE VALUE INDICATED IN THE DISPLAY DURING THE DIODE CHECK IS THE FORWARD VOLTAGE
.
FREQUENCY MEASUREMENT
1. Set the function switch to the FREQ 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 in the display. The digital reading will indicate the proper decimal point, symbols
(Hz, kHz) and value.
