Accession Number : AD0904685

Title :   Digital Interface Code Converter.

Descriptive Note : Quarterly rept. no. 4, 1 Apr-15 Jul 72,

Corporate Author : ELECTRONIC COMMUNICATIONS INC ST PETERSBURG FL RESEARCH AND ADVANCED DEVELOPM ENT LAB

Personal Author(s) : Betts, William L. ; Staudt, Feather A.

Report Date : JUL 1972

Pagination or Media Count : 41

Abstract : This is the fourth quarterly report on the Digital Interface Code Converter program. The purpose of this program is to design, develop, and fabricate one exploratory development model of the code converter. The code converter interfaces two PCM multiplexers which utilize different companding characteristics, bit rates, synchronization code formats and signaling formats. During this quarter work was concentrated on fabrication and testing of the exploratory development model. Changes were implemented to allow laboratory testing of alternate mappings and to allow interfacing of different multiplexers via ROM selection. Signaling information conversion between E and M signaling formats and tone signaling formats was investigated. Proper operation of the code converter was demonstrated in preliminary tests. (Author)

Descriptors :   (*CODING, DIGITAL SYSTEMS), INTERFACES, INPUT OUTPUT DEVICES, PULSE CODE MODULATION, MULTIPLEXING, ALGORITHMS, SIGNAL GENERATORS, MAPPING(TRANSFORMATIONS), PHASE LOCKED SYSTEMS.

Subject Categories : Electrical and Electronic Equipment
      Cybernetics
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE