本文提出了一种应用于民用工业无线测控系统的数据泵型无线调制解调器的设计思路与硬件电路。
The paper puts forward design thought and the circuit as to the modem that is applied to the telecontrol and telemeter in civil industry.
介绍AT 89 C 51单片机系统与智能调制解调器MODEM之间的接口电路和异步传输方式下的控制程序设计。
Interface circuit and the design of control program in asynchronous transfer mode between AT89C51 single chip microcomputer system and intelligent MODEM are introduced.
数据电路暨数字调制解调器(dsu)由本公司供租与维护。用户终端设备(CPE)由用户自备与维护。
Data Circuit and Data Service Unit (DSU) are provided and maintained by CHT while the customer Premises Equipment (CPE) is provided and maintained by the customer.
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