直流电阻测试仪 为测试提供的电源的两种：AC220V/DC12V。在强电磁场干扰的情况下，建议最好使用直流电源测试，此状态下测试的数值稳定，抗工频干扰能力强。 Dc resistance tester provides two types of power supply for testing: AC220V/DC12V. In the case of strong electromagnetic field interference, it is advisable to use dc power test, which is stable in the test, and the ability to interfere with the interference. 　　(1)直流电阻测试仪 交流电源测试： (1) dc resistance tester: 　　接上交流AC220V电源，相应的指示灯亮，闭合总电源开关，相应的指示灯亮，按下“启停”键，即可进行测试。测试完毕，关闭总电源开关(AC220V)，相应的指示灯灭，放电后，再转换测试夹，进行再次测试。 Connect the ac AC220V power supply, the corresponding indicator lamp is bright, close the total power switch, the corresponding instruction light is bright, press "start and stop" key, can carry out the test. Test finished, turn off the main power switch (AC220V), the corresponding indicator lamp is out, after discharge, reconvert the test clip, carry on the test again. 　　(2)充电： (2) charging: 　　接上交流AC220V电源，此充电指示灯亮，表示正在对机内的可充电池进行充电工作。仪器在使用交流电源测试,同时也在对机内电池进行充电。(仪器设计了充电保护电路，不会有过充现象产生)。 Connect the ac AC220V power supply, this charge indicates the light is bright, indicates that the rechargeable battery in the machine is being charged. The instrument is tested using ac power, while also charging the battery inside the machine. (the device designed the charging protection circuit, and there will be no charge.) 　　(3)直流电源测试： (3) dc power testing: 　　闭合总电源开关(DC12V)，相应有指示灯亮，闭合总电源开关，相应的指示灯亮，按下“启停”键，即可进行测试。测试完毕，关闭总电源开关(DC12V)，相应的指示灯熄灭，放电后，再转换测试夹，进行再次测试。 Closed the power switch (DC12V), the corresponding indicator, closed the power switch, the corresponding indicator, press the "stop" button, can be tested. Test finished, turn off the main power switch (DC12V), the corresponding indicator lamp is out, after discharge, reconvert test clip, carry out again test.