Precautions
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. In this case, turn off the power, replace the fuse with one of the same rating, and retest. 1. During measurement, do not touch the test object.
Ensure good contact in connections, and the instrument should be properly grounded!
The working place of the instrument should be far away 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 circuits. If power interference is still significant, an AC power conditioner can supply power to the instrument. A capacity greater than 200VA is sufficient.
If the LCD display becomes disordered, all keys are unresponsive, or the measured values differ greatly from actual values during operation, press the reset key or turn off the power, then restart the operation.
If there are no characters on the LCD or the display is too faint, adjust the brightness potentiometer to a suitable position.
When working in dark places, the backlight can be turned on.
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.
