13
High Accuracy Digital Multimeter with USB Interface
3.6 Resistance/Continuity Test
Select
ΩΩ
. The measurement range of resistance is from 0.01Ω to 50MΩ.
1. Turn on the power and set the rotary switch to the position of
ΩΩ
.
2. Insert the red and black testing lines into
ddBBmm HHzz VV mmVV ΩΩ
and
CCOOMM
respectively.
3. Press the ‘
SSEELLEECCTT
’ key to change resistance (
ΩΩ
) or the continuity ( ) modes.
4. For 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’
is displayed it indicates the resistor is larger than 50MΩ.
To test for continuity measurement, connect the red and black probes to the 2
measured points respectively. In case of the resistance between the 2 points
being less than about 50Ω ~ 60Ω, the buzzer will sound while the LCD
screen display the value of resistance. If ‘OL’ displays, it indicates the
resistance between the two points is larger than 500Ω.
5. When in resistance (
ΩΩ
) mode, it is possible to select auto (default) and manual
variation modes by pressing the ‘
RRAANNGGEE
’ key. If ‘OL’ is displayed during
manual use, it is necessary to select a larger range.
NNOOTTEE::
Under the continuity ( ) measurement mode it is not possible to use
manual mode. In case of performing resistance or continuity test on a 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.
3.7 Capacitance Measurement
Select . The measurement ranges from capacitance from 10PF to 5000µF.
1. Turn on the power and set the rotary switch to the position of .
2. Insert the red and black testing lines into
ddBBmm HHzz VV mmVV ΩΩ
and
CCOOMM
respectively.
3. If voltage exists in the capacitor, connect the 2 ends of the capacitor for a
short time to discharge.
4. Connect the red and the black probe to the two ends of the capacitor, if the
measured capacitor is heteropolar, it is necessary to connect the red probe to
the positive polarity of the capacitor and the black probe of the capacitor to its
negative polarity.
5. Read the capacitance from the LCD screen. If capacitance value is over
5300µF the meter will display ‘OL’, below 10PF it will display zero.
6. It is possible to select auto (default) or ‘Manual’ mode by pressing the ‘
RRAANNGGEE
’
key. If ‘OL’ displaying during manual range measurement, it is necessary to
select a larger range.
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