Note:
1. The LCD displays "1" when the resistance is over the selected range. The knob should be adjusted
to a higher range. When resistance under test is over 1M
Ω
, the reading shall be stable in a few
seconds, which is a normal status when measuring high resistance.
2. When the input terminal is in open circuit, it displays overload.
3. When measuring in line resistor, be sure that the power is off and all capacitors are released
completely.
4. It is absolutely forbidden to input voltage at the range of resistance, though the meter has voltage
protection function at this range.
2.10 Diode Test
1. Apply the black test lead to "COM" terminal and the red lead to "V/
Ω
" terminal (the polarity of red
lead is “+”)
2. Set the knob to“
”range, connect test leads to the diode under test. The red test lead connects
to diode positive polarity and the reading is the approx. value of diode forward voltage drop.
2.11 Continuity Test
Set the knob to“
”range, apply test leads to the two points of tested circuit. If the inner buzzer
sounds, the resistance is less than (70±20)
Ω
.
3.Battery Replacement
Note: Pay attention to the battery status.
Please replace the battery when LCD displays “
” .
Steps:
1. Unscrew the battery cover.
2. Take out the 9V battery and replace it with a new one.
3. Install and screw the battery cover.
Fuse Replacement (This operation could only be processed in power off status.)
1. Unscrew the battery cover.
2. Take out the battery and open the back cover.
3. Please use fuse of the same specification.
The Company shall not be held liable for any accidents and hazards resulted from the mal-
operations by the user.
The function stated in this operation manual can not be taken as the reason for using the
product for special purposes.
