Electromagnetic compatibility (emc) refers to the coexistence of devices or systems that can perform their respective functions together in a common electromagnetic environment.For the electromagnetic compatibility test of mobile phones, the main problems are: electrostatic discharge generator immunity, electrical fast transient pulse group immunity, conduction harassment and radiation harassment. Electromagnetic compatibility test method:
The mobile phone establishes a communication connection with the simulator of the mobile phone base station through a spatial link. The mobile phone charger is connected to the mobile phone and maintains the charging state. The ac input end of the charger is connected to the ac power supply or test equipment.
The test methods are described in various industry standards and related basic standards.
Call status: the mobile phone and the base station simulator establish and maintain communication connection through spatial link.According to different formats, select the intermediate channel frequency.The base station simulator controls the mobile phone operating at maximum transmitting power.The phone connects to the charger and remains charged.
Idle mode: the mobile phone and the base station simulator are connected through spatial link, the BCCH channel is activated, the mobile phone and the base station simulator remain synchronized, and the mobile phone is in standby state.During the test, the working state of the phone is selected for electromagnetic compatibility test according to the requirements of the standarda