Continuity Testing
The unit of resistance is the Ω. The meter sends a low current into the circuit
so that the resistance can be measured. This current runs along all paths
between the two probes and enables the total resistance to be calculated.
How to measure : Connect
the red lead to and the
black lead to ,as shown
in the figure to the left, and
measure the resistance
and measure the resistance
directly.
Continuity means the presence of a complete path for current to flow.
The continuity test features a beep that sounds when a circuit is complete.
The beep allows users to quickly test continuity without having to watch
the display.
How to test :
Resistance mode
changes to continuity mode,
when is pressed.
The beeper is activated when the
resistance between the red and
black probes is less than 80Ω.
Measuring Resistance
Voltage is the difference in electrical potential between two points.
The polarity of an AC voltage varies with time, while DC polarity is constant.
The meter displays AC voltage as RMS values (root mean square readings).
The RMS value is the equivalent DC voltage measured in a time varying
sinusoidal signal.
How to measure :
Press the voltage measuring button, and then
select AC or DC by pressing button. When DCV is being measured,
place the red lead on +ve side and the black lead on -ve side of the voltage
source.
Measuring AC & DC Voltage
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3
3
3
3
3
3
3
3
3
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36
MULTI FUNCTIONAL CCTV TESTER
37
MULTI FUNCTIONAL CCTV TESTER
FUNCTIONAL SPECIFICATION
FUNCTIONAL SPECIFICATION
MODE
STORE
Change Mode
Fix and show the current value.
C
METER
LOSS
MODE
STORE
DC AC OHM VOLT BUZZ
OHM OVER
C
METER
LOSS
MODE
STORE
DC AC OHM VOLT BUZZ
OHM OVER
C
METER
LOSS
MODE
STORE
DC AC OHM VOLT BUZZ
OHM OVER
C
METER
LOSS
MODE
STORE
DC AC OHM VOLT BUZZ
ACV 0.018V
C
METER
LOSS
MODE
STORE
DC AC OHM VOLT BUZZ
DCV+ 12.23mV
