Accession Number : AD0436895


Title :   DEVELOPMENT OF TELETYPEWRITER GROUP AN/GGA2(XW-2),


Corporate Author : STELMA INC STAMFORD CONN


Personal Author(s) : Vlack,Melvin Van ; Hajdu,Frank


Report Date : 27 Nov 1963


Pagination or Media Count : 83


Abstract : Development is reported of a highly efficient, solid-state error-detection and correction system (AN/GGA-2(XW-2)) for use in long-haul digital-data radio teletypewriter links - (i.e., transistorized version of AN/GGA-2(XW-1) developted by Melpar, Inc. This report describes the: (1) ligic mechanical, and electrical design of the equipment, including the modifications resulting from approved Engineering Change 1: (2) checks performed during final-system tests and extended periods of operation, resulting in a 2000-MTBF predictability; and (3) design characteristics that minimize and/or facilitate maintenance. The AN/GGA-2(XW-2) meets or exceeds specification requirements. The possibility of obviating the repeat operation in single errorcorrection is suggested, as are several mechanical-design considerations, which represent refinements that might be incorporated into future models, should the latter be required. (Author)


Descriptors :   *TELETYPE SYSTEMS , *SECURE COMMUNICATIONS , TELETYPE SYSTEMS , PRINTED CIRCUITS , MAINTAINABILITY , RELIABILITY , CRYPTOGRAPHY , ERRORS , CORRECTIONS , TRANSMITTER RECEIVERS , CONFIGURATIONS , SPECIFICATIONS , SYNCHRONIZATION(ELECTRONICS) , COMPUTER LOGIC , CIRCUITS , ACCEPTABILITY , MODULES(ELECTRONICS) , PACKAGING


Distribution Statement : APPROVED FOR PUBLIC RELEASE