PROPOSED BINARY INTERSYSTEM TRANSMISSION CHARACTERISTIC: REFERENCE DATA AND RATIONALE,
Abstract
The objective of this study was to review the various technical considerations applicable to the selection of a single Binary Intersystem Transmission Standard (BITS) adaptable to future commercial airplanes. Study results to date indicate that the advantages of split-phase-bipolar modulation are sufficient to recommend it over other techniques considered. The suggested message format includes one bit of double amplitude to define the word beginning, 12 bits for address, and 24 bits for data. In addition, tutorial discussions are presented on: (1) Analog data sampling rate errors and effects, (2) Some of the effects of interconnecting many data transmitters and receivers using a common digital data transmission system, (3) The effect of bits per word, word transmission (sampling) rate, and number of signals on the transmission clock rate. The study has established the relative advantages/disadvantages of various BITS concepts from the technical viewpoint. It has also established that operational requirements will be of sufficient importance to influence the basic BITS system concept to the point that multiple transmission concepts may be advantageous over any single concept. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 11, 1969
- Accession Number
- AD0695352
Entities
People
- John E. Scheurell
Organizations
- Boeing Commercial Airplanes