3. If MSD displays “1", it means the meter is overrange. Please set the knob to a higher range.
4. Do not attempt to input voltage over 600V. Otherwise,it may damage the circuit of the meter.
5. Avoid touching high voltage circuit when measuringit
2.7 AC Voltage Measurement
1. Apply the black test lead to "COM" terminal and thered testleadto “V/Ω” terminal
2. Set the knob to a proper ACV range, and connect thetest leads crosslyto the electric circuit undertest.
Note:
1. Firstly, the knob should be set to the highest range ifusers have no idea about the range of voltage under
test.Then select the proper range based on display value.
2. If MSD displays “1", it means the meter is over range.Please set the knob to a higher range.
3. Do not attempt to input voltage over 600Vrms.Otherwise,it maydamage the circuit of the meter.
4. Avoid touching high voltage circuit when measuringit.
2.8. DC Current Measurement
1. Apply the black test lead to "COM" terminal and thered test lead to “V/Ω” terminal (max. 200mA), or put
thered test lead to "10A" terminal (max. 10A).
2. Set the knob to a proper DCA range, and connect thetest leads in series to the electric circuit under test.
LCDdisplays polarity and current value under test connectedby the red test lead.
Note:
1. Firstly, the knob should be set to the highest range ifusers have no idea about the range of voltage under
test.Then select the proper range based on display value.
2. If MSD displays “1", it means the meter is over range.Please set the knob to a higher range.
3. The max input current is 200mA or 10A (depends onthe insert position of the red meter pen). Excessive
current will melt the fuse. When measuring, if the meterhasno reading display, please check relevant fuse.
2.9 Resistance Measurement
1. Apply the black test lead to "COM" terminal and thered testleadto “V/Ω” terminal.
2. Set the knob to a proper resistance range, and connectthe leads crosslyto the resistance under test.
Note:
1. The LCD displays "1" when the resistance is over theselected range. The knob should be adjusted to a higher
range. When resistance under test is over 1MΩ, 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 displaysoverload.
3. When measuring in line resistor, be sure that the power is off and all capacitorsare released completely.
4.It is absolutely forbidden to input voltage at the rangeof resistance, though
2.10 Diode Test
1. Apply the black test lead to "COM" terminal and thered 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 ContinuityTest
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.
4. Maintenance
This is a precise meter; please don't try to modify thecircuit.
Note:
1.Do not input voltage over DC600V orAC 600Vrms.
2.Do not measure voltage on range Ω.
3.Do not use this meter for measurement if the battery isnot correctly placed or the back case is not pro-
perly screwed.
4.Remove the test leads from the testing points and turnoff the meter before replacing battery or fuse
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 the9V battery and replace it with a new one.
3.Install andscrew the battery cover.
Fuse Replacement (This operation could only beprocessedin power off status.)
1.Unscrew the battery cover.
2.Take out thebattery and open the back cover.
3.Please use fuse of the same specification.
