1. The instrument shell should be grounded reliably;
2. In order to improve the measurement accuracy, the outer surface of the vacuum switch should be wiped clean before the test; 3. Please choose the correct tube type of the vacuum tube;
4. During the test, the high-voltage output terminal will output a high voltage of about 20KV, please keep the insulation distance from the human body and the low-voltage line terminal (Guodian Xigao recommends keeping a distance of more than 0.5 meters from the human body), and the magnetic field voltage output terminal outputs about 1600V high voltage, please pay attention to safety!
5. When the instrument is tested, the wiring should be connected to the magnetron coil and the vacuum tube first, and then connected to the instrument. After the test is completed, remove the test wire connected to the instrument first, and then remove the connection to the magnetron coil and vacuum tube; if you forget to connect the magnetron coil and press the measurement button directly, you should immediately turn off the power and restart Connect the magnetron coil, please note that the magnetic field voltage output terminal will have a higher voltage at this time, please do not touch the conductor part when wiring, so as not to be injured by the residual voltage on the capacitor.
6. After the measurement is completed, there may still be a residual voltage of about 40V at the output of the magnetic field, please pay attention to safety.