Chapter 7 Packet Telemetry: A Retrospective

Abstract

The Inter-Range Instrumentation Group’s (IRIG) 106 Chapter 7 standard provides a method for embedding variable length, well-defined data formats within a Chapter 4 Pulse Code Modulation (PCM) stream. Chapter 7’s approach to embedding data streams within a PCM format offers several strengths and weaknesses. This paper will explore the pluses and minuses of the Chapter 7 standard and propose some alternative approaches that have been used successfully.