多摩川17bit绝对值编码器的NRG协议文档，配合上传的解码源程序，采用半双工的通信模式。,Tamagawa 17bit absolute encoder NRG agreement documents, with the upload source decoder, using half-duplex communication mode.

此为介绍一光电编码器的学术论文，采用VHDL语言编写，介绍了4分频的实现。-This is the descr iption of the papers of a photoelectric encoder using VHDL language, introduced a 4-band implementation.