Accession Number : AD0706723

Title :   A MULTI-CHANNEL INTERIOR COMMUNICATION SYSTEM UTILIZING TIME MULTIPLEXING.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Kellem,Carl William

Report Date : DEC 1969

Pagination or Media Count : 34

Abstract : The development of a multi-channel interior communication system utilizing a single wire as a transmission line was undertaken. The principle of time multiplexing was used incorporating the Pulse Amplitude scheme of modulation. Synchronization was accomplished by continuously transmitting a synchronization pulse from one 'Master' station to all other 'Slave' stations. This system permits mutally exclusive conversations between any stations concurrently. A master station and one slave station were built and tested. Using a 10-kHz sampling frequency, a frequency response of from 100 Hz to 4.8 kHz was obtained. By using solid-state devices throughout, the size and weight of each station are minimized. This in conjunction with the need for only one connecting wire, make this system ideal for modern aircraft. (Author)

Descriptors :   (*INTERCOMMUNICATION SYSTEMS, MULTIPLEXING), (*AIRCRAFT, INTERCOMMUNICATION SYSTEMS), PULSE AMPLITUDE MODULATION, SYNCHRONIZATION(ELECTRONICS), TRANSMISSION LINES, DIGITAL SYSTEMS, LOGIC CIRCUITS, THESES

Subject Categories : Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE