An introduction to testing techniques in the intelsat TDMA/DSI system. Part 3: Specialized test equipment for ssog tests

Abstract

This is the third paper in 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 the second part,2 INTEiLSAT's satellite system operations guide (SSOG) for TDMA was introduced, the principles of SSOG testing were discussed and the need for several types of specialized test equipment identified. This third part reviews the features of TDMA which affect test equipment design and gives a detailed description of the three items of specialized test equipment which are essential requirements for the conduct of system tests and line-up of individual links. The fourth part will complete the series with a report on operational experience gained in the initial stages of TDMA implementation within the INTELSAT system.