The aim and significance of daily maintenance in operation of SDH optical transmission equipment for the electric power communication systems, the classification and contents of.
介绍了电力通信系统SDH光传输设备日常运行维护工作的目的及意义、维护工作的分类及内容、日常维护中应注意的一些问题。
The main test items of optical fiber communication equipment are discussed, and the operation methods of WG-ANT20E transmission analyser in optical fiber communication system testing are introduced.
主要介绍了光纤通信设备的主要测试项目以及WG ANT20E传输分析仪在光纤通信系统测试中的使用方法。
This paper describes the major performance and applications of the PFM (pulse frequency modulation) optical fiber transmission equipment for colour TV programs with two accompanying sound channels.
本文叙述PFM彩色电视双伴音传输设备的主要性能和应用。
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