FaraDigi FDM18A, Руководство пользователя

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Operational guidelines
3.2.2 Electric resistance measurement
.&.
To avoid the meter or the measured equipment from
·
damage, do not attempt a resistance measurement
,the operator has already cut off all power sources for
circuit to be measured and fully discharged
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Ohm is the unit of electric resistance (n).
The measuring ranges of electric resistance of this meter are 600.0n,
6.000kn, 60.00kn, 600.0kn, 6.000Mnand 60.00Mn,
Measurement of electric resistance
1. Turn the rotary switch to the
n
position.
2. Connect the test lead in black and test lead in red to COM
input socket and V /ninput socket respectively.
3. Use another two ends of the test lead to measure the electric
resistance of the circuit to be measured.
4. Read the measured electric resistance value on LCD screen.
Notes:
• The measured value of the electric resistance of the circuit differs a
bit from the rated value of the electric resistance.
• To ensure measurement accuracy, in attempting a low resistance
measurement, first put two pen-shaped meters in short circuit and
capture the resistance reading of these short circuits. Then subtract
the aforesaid reading from the measured resistance.
• At 60Mnposition, you have to wait a few seconds before the
reading grow stable. This is quite normal for a high resistance
measurement.
• When the meter is in open circuit, the display unit will show "OL"
that indicates the measured value is over the measuring range.
3.2.3 Diode test
_&.
To avoid the meter or the measured equipment from
·
dama e, do not attem t a diode test unless the o erator