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(第三部份) 本设计指南的第三部分把第一部分、第二部分的一般的和特殊设计考虑付诸实践。以讨论如何制作数据线路收发信机的印刷电路板开始,谈到了一些只有指定的Motrola公司的元件才有的加工制造问题以及一些普通的制造程序。其次,本文还涉及到系统的测试程序,包括使用合适的测试设备和电路。在试验结果证明不适宜的情况下,讨论了故障检测程序,概述了故障检测树状图。最后,涉及到系统性能的分析,研究了系统损耗分配的原理。根据这些原理可以选择出最适合于应用的纤维光缆。
(Part 3) The third part of this design guide puts the general and special design considerations in Part I and Part II into practice. Beginning with a discussion on how to make a printed circuit board for a data line transceiver, there are some manufacturing issues that are unique to only the designated Motrola components and some common manufacturing procedures. Second, this article also covers the system’s testing procedures, including the use of suitable test equipment and circuits. In the case that the test results prove unsuitable, the fault detection procedure is discussed and the fault detection dendrogram is outlined. Finally, it involves the analysis of system performance and studies the principle of system loss distribution. According to these principles can choose the most suitable for the application of fiber optic cable.