回复 3# 阿飞小白
拿手机来说的话,以CE,GSM手机为例,现在使用的标准是EN 301 511。测试项目有:1.Transmitter - Frequency error and phase error
2.Transmitter - Frequency error under multipath and interference conditions
3.Transmitter output power and burst timing
4.Transmitter - Output RF spectrum
5.Conducted spurious emissions - MS allocated a channel
6.Conducted spurious emissions - MS in idle mode
7.Radiated spurious emissions - MS allocated a channel
8.Radiated spurious emissions - MS in idle mode
法规有要求极限条件的测试。也就是说会有温度,工作电压的变化组合。例子如下:
Extreme testconditions : Operating voltage 3.7V DC Vmax=4.2 V DC Vnor=3.7 V DC Vmin=3.5 V DC Extreme temperature : -10℃~55℃
希望表达的还算清楚,有兴趣可以继续探讨。 |