Prototype data terminal : Multiplexer/demultiplexer
- Author
- Goodwin, J. E.
- Published
- Dec 1, 1972.
- Physical Description
- 1 electronic document
- Additional Creators
- Leck, D. E.
Online Version
- hdl.handle.net , Connect to this object online.
- Restrictions on Access
- Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access - Summary
- The design and operation of a quad redundant data terminal and a multiplexer/demultiplexer (MDU) design are described. The most unique feature is the design of the quad redundant data terminal. This is one of the few designs where the unit is fail/op, fail/op, fail/safe. Laboratory tests confirm that the unit will operate satisfactorily with the failure of three out of four channels. Although the design utilizes state-of-the-art technology. The waveform error checks, the voting techniques, and the parity bit checks are believed to be used in unique configurations. Correct word selection routines are also novel, if not unique. The MDU design, while not redundant, utilizes, the latest state-of-the-art advantages of light couplers and integrated circuit amplifiers.
- Other Subject(s)
- Collection
- NASA Technical Reports Server (NTRS) Collection.
- Note
- Document ID: 19730010476.
Accession ID: 73N19203.
NASA-CR-124127.
MCR-72-123-REV-A. - Terms of Use and Reproduction
- No Copyright.
View MARC record | catkey: 15943540