Aktakom ??M-1130 User Manual page 23

АМM-1130
Resistance/continuity Test/Diode Measurement
The test chart is seen in Figure 3-5. the measurement range of resistance is of 0.01Ω～220MΩ and the measurement methods
are as follows:
1. Turn on the power switch and set the rotary switch to the position
2. Insert the red and black testing lines into the VΩH input end and the COM input end respectively.
3. Press the FUNC, key to select resistance (Ω) ,the continuity (
4. For the Resistance measurement, connect the red and black probes to the two ends of resistor and read the resistance
value from the display screen. If OL displaying, it indicates the resistor is larger than 220MΩ. As for the Continuity
measurement, connect the red and black probes to the two measured points respectively. In case of the resistance
between the two points being less than about 30Ω, the buzzer will sound while the display screen displaying the value
of resistance. As for the Diode measurement, connect the red and black probes to the positive and negative polarity.
while the display screen will display the forward voltage drop. If the forward voltage drop is larger than 2V the OL will
be displayed. When the resistance measurement mode being implemented, it is possible to select range by pressing the
RANGE key. The indicator of range indicates the value of range. If OL displaying during manual range measurement,
it is necessary to select a larger range. Under the continuity measurement mode it is null to press the RANGE key.
Notes: In case of performing resistance ,continuity or diode test on circuit board, it is necessary firstly to turn off the power of the
circuit board and then perform the measurement. As there may be other parallel circuits, so the displayed value of test is not surely the
actual value of the resistor.
.
)or the diode measurement ( ) modes
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