ER2200可以快速高精度地测量消光比，偏振角度，和光功率。ER2200配备了实时测试软件，50dB的PER动态测试范围，成本直降20%。
ER2200 can quickly and accurately measure extinction ratio, polarization angle, and optical power. The ER2200 is equipped with real-time testing software, with a dynamic testing range of 50dB for PER, and the cost is reduced by 20%.
