In the process of using the products, there are different use environments. Some of them are installed outdoors, some are carried around, some are installed on ships, some are installed on airplanes, etc., and they are subjected to stress from different environments. Some are affected by wind, rain, and humidity. Vibration and fall, some by salt spray erosion, some by wind and dust storms, etc.; in order to confirm the product can work properly in these environments, the national standard, the line standard requires the product to simulate some test items in the environmental method, these test items include:
1, high temperature test (high temperature operation, high temperature storage);
2, low temperature test (low temperature operation, low temperature storage);
3, high and low temperature alternating test (temperature cycle test, thermal shock test);
4, high temperature and humidity test (heat and humidity storage, hot and humid cycle);
5, mechanical vibration test (random vibration test, sweep frequency vibration test);
6. Car transport test (simulation transport test, collision test);
7, mechanical impact test;
8, switch power test;
9, power pull test;
10, cold start test;
11, salt spray test;
12, rain test;
13, dust sand test;
