of the circuit that is broken (its voltage is high).
4) Connect the power to the circuit and read out the displayed readings. If the display
only displays "OL", this means that the input exceeds the selected range and the rotary
switch should be placed in a higher range.
4.9 Resistance measurement
Warning
Risk of electric shock.
To avoid damage to the instrument or equipment under test, all power supplies
of the circuit under test and all high voltage capacitors should be fully
discharged before measuring the resistance.
The unit of measurement of the resistance is ohm (Ω)
The resistance range of the instrument is:
200.0
Ω、
2.000k
Ω、
20.00k
Ω、
200.0k
Ω、
2.000M
Ω、
20.00M
Ω。
Measuring resistance:
1) Turn the rotary switch to the file. (Native default resistance range)
2) Insert the black test lead into the COM jack and the red test lead into
the jack.
3) Measure the resistance of the circuit under test with the other ends of the test pen.
4) Read the measured resistance value from the LCD monitor.
Note
：
1) The measured resistance value on the circuit is usually different from the resistance
rating.
2) In the measurement of low resistance, in order to measure the accuracy of the two
short-circuit test pen, read the pen short-circuit electricity, resistance, measured
in the measured resistance to be subtracted after the resistance value.
3) In the 20MΩ file, the instrument m
ay take several seconds to stabilize the reading,
which is normal for high resistance measurements.
4) When the meter is open, the display will show "0L", indicating the measured value
overrange range. 17
