The INTELSAT TDMA/DSI System is a complex, centrally‐controlled communications system, the performance of which will depend to some extent on the effectiveness of the alignment, maintenance and testing procedures. However, the wide range of disciplines encountered in the system mean staff currently familiar with the existing FDMA network may have difficulty with these new and unfamiliar fields. The purpose of this series of four papers is to provide an understanding of the necessity for, and operation of, the SSOG test procedures for the INTELSAT TDMA/DSI system. In this first part, the overall system and its testing requirements will be discussed as a foundation for a discussion of the SSOG tests in Part 2.
This paper is the second of a four-part series addressing the testing and alignment techniques to be used in the INTELSAT TDMA/DSI system. In the first part,' the salient characteristics of the overall TDMA/DSI system were presented, together with a discussion of the fundamental requirements for testing and alignment. In this second part, INTELSAT's satellite system operations guide (SSOG) for TDMA is introduced and the principles of testing embodied in the SSOG tests are discussed. In particular, the impact of the unique TDMA access discipline on testing is examined. The third part will address the design of the specialized test equipment required. The fourth part will complete the series with a report on the operational experience gained in the initial stages of the TDMA implementation within the INTELSAT system.
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