Title :
Method of testing p.c.m. encoders and decoders by a level-at-a-time process
Author_Institution :
Post Office Telecommunications Headquarters, Research Department, London, UK
Abstract :
A method for automatically testing individual p.c.m. terminals, transmit and receive, is given. Each of the encoding levels is tested a selected number of times and an error indication is produced. Access is required to only the audio 4-wire and digital-line terminals.
Keywords :
demodulators; modulators; pulse-code modulation; testing; PCM decoders; PCM encoders; automatic testing; demodulators; modulators;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19710026
