论文部分内容阅读
上海市长途电话局和江苏太仓晶体管分厂研制成功 HJN-B 型话机测试仪,这是一种采用8035单片微机控制的简式话机测试仪器,具有硬软件设计新颖、多功能、测试速度快等优点,适合电话局进行话机维护和工厂生产话机作检测之用。该仪器在接收话机脉码讯号后,在微机指令控制下,对讯号进行处理与运算,其结果通过16只 LED 数码管显示出话机的发号、断续比及发号速率。另外,该仪器还具备振铃和简单送受话器判别装置,话机通过该仪器测试后,可以迅速判别出其基本性
Shanghai Long-distance Telephone and Jiangsu Taicang transistor branch successfully developed HJN-B-type phone tester, which is a simple 8035 microcomputer control of the phone with simple test equipment, hardware and software design, multi-functional, fast test speed And other advantages, suitable for the telephone office for telephone maintenance and factory production for testing purposes. The instrument receives the pulse code signal, under the command of computer commands, the signal processing and computing, the result of 16 LED digital tube shows the phone number, intermittent ratio and the number of hair. In addition, the instrument also has ringing and simple handset identification device, the phone after the instrument test, you can quickly determine the basic