Operation Manual

Portable 4000 count digital multimeter
22
3.3 Resistance
measurement
Never test a resistance on a live circuit.
• Connect the leads - preferably twisted - to the multimeter
(COM
and Ω terminals) and to the circuit or the component to be tested.
•
Position the selector switch on the ohmmeter function “ Ω
”.
• Automatic range selection : read the measured value.
•
Memorise the value, if necessary, by pressing the “ MEM ” key.
• Overload : the beep sounds and “ OL. ”
blinks.
Range
400 Ω 4 kΩ 40 kΩ 400 kΩ 4 MΩ 40 MΩ
Resolution
0.1 Ω 1 Ω 10 Ω 100 Ω 1 kΩ 10 kΩ
Accuracy ± 0.5 % R ± 4 D
± 1 % R
± 5 D
± 2 % R
± 5 D
Voltage on
open circuit
< 2 V
Measuremen
t current
0.4 mA
Protection 600 Vrms
3.4
Continuity sound test
• Connect the leads to the multimeter (COM and Ω terminals) and to
the circuit or the component to be tested.
•
Position the selector switch on the continuity sound function “
”.
•
Audible beep when R < 40 Ω
.
• Protection : 600 Vrms.
• Output voltage in open circuit < 2 V
•
Overload : “ OL. ” or every segments of the bargraph are display
ed.
3.5 Diode test
Never test a diode on a live circuit.
With this function, it is not only possible to test classic diodes, but also
LED’s or any other semiconductor in which the junction corresponds
to a direct voltage less than 3 V.
•
Connect the leads to the multimeter (COM and
terminals) and
to the circuit or component to be tested.
• Position the selector switch on the “
” function.
• Max. output voltage : 4 V in open circuit
• Short-circuit current : 1 mA
•
Overload : the beep sounds and “ OL. ”
blinks.
•
Memorise, if necessary, by pressing the “ MEM ” key.
•
Protection : 600 Vrms.
3.6 Frequency measurement
•
Connect the leads to the multimeter (COM and V terminals) and to
the circuit the frequency
of which is to be tested.
• Position the selector switch on the “ Hz ” function.
• Automatic range selection : read the measured value.
•
Memorise, if necessary, by pressing the “ MEM ” key.
• Overload : “ OL. ”
blinks.
• ...
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