Precautions
2. If the test leads are short-circuited or the high and low voltage connections are reversed, the fuse will blow. After the fuse blows, if a measurement is attempted, the LCD will display "Measuring, please wait!" and then stop. At this point, turn off the power, replace the fuse with one of the same capacity, and retest. 1. During measurement, do not touch the test object.
3. Ensure good contact in connections, and the instrument should be properly grounded!
4. The working place of the instrument should be far from strong electric fields, strong magnetic fields, and high-frequency equipment. The power supply interference should be as small as possible; it is advisable to use lighting lines. If the power interference is still significant, an AC purified power supply can be used to power the instrument. A capacity greater than 200VA for the AC purified power supply is sufficient.
5. If the LCD display becomes disordered during operation, all keys do not respond, or the measured values differ greatly from actual values, press the reset button or turn off the power, then restart the operation.
6. If the LCD has no character display or the characters are too faint, adjust the brightness potentiometer to a suitable position.
7. When working in dark places, the backlight can be turned on.
8. The instrument should be stored in a dry and ventilated place. If it is not used for a long time or the environment is humid, extend the preheating time before use to remove moisture.
