一、粗角度转换——接触式编码盘及电剧选择电路 (一)编码盘用二进制编码盘及有关电路将粗角度直接变换成数码。编码盘为一直径67mm的环氧树脂圆盘。盘上有九个同心圆环,其中1—8层圆环刻有二进制编码图形,代表八位二进制数字。最外层圆环分为2~8=256等分,每等分对应的角度为360°/256=1°24′22.5″。第 A rough conversion - Contact-type encoder and electric drama selection circuit (A) Coding disc with binary coding disc and the circuit will be rough angle directly into digital. Coded disk is a 67mm diameter epoxy disk. There are nine concentric rings on the disc, of which 1-8 rings engraved with a binary code graphics, representing eight binary digits. The outermost ring is divided into 2 ~ 8 = 256 equally divided, the corresponding angle for each equal to 360 ° / 256 = 1 ° 24’22.5 "