3.4 MEASURING RESISTANCE
3.4.1 Connect the black test lead to the COM jack
and the red test lead to the V/
Ω
jack. ( NOTE :The
polarity of red lead connection is positive
“
＋
”
)
3.4.2 Set the rotary switch at desired
Ω
range
position and connect test leads across the
resistance under measurement. Read LCD
display.
NOTE:
1. For resistance above 1M
Ω
, the meter may take
a few seconds to stabilize reading.
2. When the input is not connected, i.e. at open
circuit, the figure
“
1
”
will be displayed for the
overrange condition.
3. When checking in - circuit resistance, be sure
the circuit under test has all power removed and all
capacitors are full discharged.
4. At 200M
Ω
range display is 10 counts when test
leads are shorted. These counts have to be
subtracted from measuring results. For example,
when measuring 100M
Ω
resistance, the reading
will be 101.0 and the correct measuring result
should be 101.0
—
1.0 = 100.0 M
Ω
.
- 9-
