4. Before measuring low resistance, you should make the test leads short-circuit at first, and then press “REL”. By this way, you can get the actual
value of the resistance.
Note:
1 Firstly users should select the highest range, if the value of resistance is unknown beforehand, and then select the proper range based on
displaying value.
2. The LCD displays “OL” when the resistance is over the selected range. The knob should be adjusted to a higher range. When measuring value is
over 1MΩ, the reading will take a few seconds to be stable. It’s normal for high resistance measurement.
3. When input terminal is in open circuit, LCD will display “OL”.
4. Before measuring in line resistor, make sure that the power is off and all capacitors are discharged completely.
5. Do not input any voltage at resistance range.
4.8 Diode and Continuity test:
1.
Switch the knob to “
Ω
” range, and press “DC/AC” key to select diode measurement mode.
2.
Insert the black test lead in “COM” terminal and the red one in “V/Ω/Hz” terminal (the polarity of red lead is “+”)
3. Forward measurement: connect red test lead to the positive polarity and the black test lead to the cathode polarity of the diode. LCD will display
the approx. value of forward voltage drop.
4. Backward measurement: connect red test lead to the cathode polarity and the black test lead to positive polarity of the diode. LCD will display
“OL”.
5. The complete diode testing includes forward and backward measurement, if the result doesn't meet the descriptions above, it means the diode is
broken.
6. Press “DC/AC” key to select the Continuity measurement mode.
7. Connect test leads to two points of tested circuit, if the resistance is less than (3
0±10) Ω, the buzzer sounds.
Note:
1. Don’t input voltage at “
” range.
2. Make sure the power is off and all capacitors are discharged. Any AC signal will make the buzzer sounds.
4.9 Capacitance measurement
1.Switch the knob to “
”range
；
2.
Insert the black lest lead in “COM” terminal and the red one in “V/Ω/Hz” terminal.
；
3. If the LCD doesn’t display “0”, press “REL” to clear the reading;
4. Connect the capacitor to “COM” and “
VΩHz” terminal. (Note: the red test leads is for positive pole ○
＋
).LCD displays capacitance value.
Note:
1. Don’t input voltage or current to the “VΩHz” terminal when measuring the capacitance or the capacitor still in the “Cx” terminal.
2. In order to assure the accuracy, please press “REL” to clear the reading before testing.
3. There is only the auto range mode under the capacitance range.
4. The capacitor must be completely discharged before testing.
5. The reading of 400uF range will take more than 15 seconds to be stable.
4.10 Frequency measurement
1.
Insert the black lest lead in “COM” terminal and the red one in “V/Ω/Hz” terminal.
；
2. Switch the knob to “Hz” range
，
connect the test leads or shielded cable to the signal source or the load which is tested.
3.Press “Hz/DUTY” key to choose frequency/duty cycle measurement
，
LCD will display the frequency or duty cycle of the tested signal source.
Note
：
1. There is only the auto range mode under the frequency range;
2. The meter can still work if the input current is higher than 10V rms, but the accuracy is not guaranteed;
3. In noisy environment, it's better to use shield cable to measure a low signal;
4. When measuring high voltage circuit, do not touch the high voltage circuit;
5. Don’t input voltage higher than 250V DC or AC peak value, or it may damage the meter.
4.11 Temperature measurement
1. Switch the knob to
“
℃
/
℉
”
range, and press “DC/AC” key to choose
℃
or
℉
measurement.
2. Insert the cold terminal (free end) of thermocouple in “TEMP”socket
，
and put the working terminal (temperature measuring end) of
thermocouple on the surface or inside the object to be tested. Then you can read temperature from the screen, and the data is in Centigrade.
Note:
1. If insert the thermocouple oppositely, it will display the wrong value. When the temperature is rising, the value will be down.
2. When the input terminal is open circuit, it will display the environment temperature.
3. Don’t change the temperature probe randomly, or the accuracy will not be guaranteed.
4. Don’t input voltage at temperature range.
4.12 Transistor Test (hFE)
1. Switch the knob to hFE range.
2. Define the transistor is NPN or PNP type, then insert the emitter, base and collector separately in the relative hole.
5. METER MAINTENANCE
The meter is a precise instrument. Random changes to the circuit are not allowed.
Note:
1. Don’t input the voltage value higher than DC 1000V or AC 750V rms.
2. Don’t input voltage at current, resistance, diode and continuity range.
3. Don’t make any measurements when the battery isn’t installed or the back cover isn’t fixed.
4. Before replacing fuse, please remove the test leads from the measuring point and turn off the power.
5. Keep the meter away from water, dust and shock.
6. Don't expose the meter under high temperature, high humidity, combustible, explosive and strong magnetic place.
7. Wipe the case with a damp cloth and detergent. Do not use abrasives and alcohol to clean the meter.
8. If do not operate for a long time, you should take out the battery to avoid leakage damage.
9. When “
” symbol is displayed, you should replace the battery according to the following steps:
9-1. Follow picture 2, and remove the holster at first.
9-2.Unlock the battery door and remove the cover;
9-3. Replace the old battery with the new one. For longer using life, it's better to use alkaline
battery.
9-4. Fix the battery door.
9-5, Follow the picture to put on the holster.
10. Fuse change: When replacing fuse, please use fuse with same type and specification.
10-1. Follow picture 2, and remove the holster at first, then unlock the battery door and remove the
cover;
10-2. Take out the fuse and put on a new one.
10-3. Fix the battery door, and put on the holster.
6. TROUBLE SHOOTING
If the meter does not work properly, please check the meter as following steps:
(If the problems still cannot be solved, please refer to repairing center or contact the local dealers.)
Fault
Solution
No reading on LCD
Turn on the power
Replace battery
signal appears
Replace battery
No current or temperature input
Replace fuse
Error Value
Replace battery
The specifications are subject to changes without prior notice.
The content of this manual is regarded as correct. If users find out any mistakes or omissions, please kindly contact the
manufacturer.
The manufacturer will not be responsible for accidents and damage caused by improper operations. The functions described in this
User Manual shall not be considered as the reason for any special usages.
201187/V0.0
