远供电源以中心机房的基础电源-48VDC变换到280V/380VDC输出，经专用电缆或复合光缆传输到远端设备，远端可以用逆变设备将直流电转变为可用的交流电或者用直流电源降压到-48V从而实现远程供电。
介绍了以AT 89 C 51单片机为基础的小灵通基站直流远供电源模块综合参数检测仪的硬件和软件的设计。
Based on AT89C51 micro-controller, this paper describes the design of hardware and software of multi-parameter measurement instrument of DC remote reserve power supply module of PAS cell station.
利用气体放电管的特性，实现了小灵通基站后备直流远供电源悬浮系统动力线碰触的检测；电路结构简单，实用性强。
The detecting circuit of power line touching of the suspension system of DC long-distance reserve power supply of PHS Cell Station was designed by the characteristic of gaseous discharge tube.
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