实光电码盘的输出数据的四倍频，使码盘输出精度提高四倍。-real photoelectric encoder output data of the four frequency, accuracy encoder output increased by four times.

实光电码盘的输出数据的四倍倍频，使码盘输出精度提高四倍。-Four times the multiplier of the output data of the real optical encoder, the encoder output precision increased by four times.