9
measured and fully discharged all high-voltage capacitors.
Ohm is the unit of electric resistance (
).
The measuring ranges of electric resistance of this meter are 600.0
,
6.000k
, 60.00k
, 600.0k
, 6.000M
and 60.00M
,
Measurement of electric resistance
1. Turn the rotary switch to the appropriate position.
2. Connect the test lead in black and test lead in red to COM input
socket and V/
input 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 60M
position, 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 damage,
do not attempt a diode test unless the operator has already
cut off all power sources for the circuit to be measured and
fully discharged all high-voltage capacitors.
Diode test outside the circuit:
1. Turn the rotary switch to the position
.
2. Connect the test leads in black and in red to COM input socket and
V/
input socket respectively.
3. Connect the test leads in black and in red to the positive and
negative poles of the diode to be tested respectively.
4. The meter displays the forward bias value of the diode to be tested. If
