RUGGEDIZED CABLE ASSEMBLY FOR PCM EQUIPMENT.
Final rept. 8 Sep 64-31 Dec 66,
ITT FEDERAL LABS NUTLEY N J
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Report summarizes engineering processes to improve cable assembly CX-4245G. Working to a specified weight limitation, cable with improved shielding effectiveness and greater breaking strength and an entirely new hermaphrodite connector were developed. The rigors of field service were a major influence on the design and worked in opposition to the weight and electrical requirements. The first cable and connector models conformed with most of the specified requirements in laboratory tests. One cable had a steel wire rope support and the other cable a steel wire braid support. Both had required shielding improvement in terms of surface transfer impedance. In field tests both designs had inadequate shielding effectiveness and the steel wire rope design exposed the electrical components to mechanical damage. Both lacked ruggedness due to designing for minimum weight and size. The steel wire rope design was abandoned. The steel braided design was revised for greater ruggedness and a model was produced that met weight and strength requirements. A prototype assembly using connectors with interchangeable internal parts permitting variation of shield interconnections was field tested. An arrangement with all shield braids insulated was selected. 100 CX-11230 assemblies were produced as Service Test Models consisting of one-half mile of cable type A2321536 ITTFL with connector CA-44317 ITT Cannon on each end delivered on a type DR-7modifiedreel. Author
- Electrical and Electronic Equipment
- Non-Radio Communications