BD——1编码多路对讲机

BD-1 Electrouic Tow-way Talker-with coding type Multichannel Device

本文主要讲述BD——1编码式有线多路对讲机的主要组成部分、电路原理及工作过程。BD——1的主要特点是以双工方式工作,每台单机既是主机也是分机、能呼叫它机,也可被任一它机所呼叫,任意两机之间联系,都不需中转,而且所有单机之间的联系,是以并联的方式挂在四根线上。

This paper introduces composition, principle and wording process of the BD-1. It's property is that words in duplex form. Single device operates as a maninframc, and it opr atcs as a subcguipcmcnt too. To join any device to another needn't build-up connection. All device of a group are put on the four lines.