DISCRETE CONDUCTOR HARNESSES
Discrete conductor harnesses are built to print for specific applications, and are constructed of one or more individually insulated wires, cables or fiber optics; with or without an overall helical twist; with or without an overall covering, jacket or metallic braid; with or without breakouts; assembled with two or more electrical termination devices; and engineered as a unit that can be assembled and handled as a single component.
See Section 4.01 "Cable and Harness, General Requirements", for common accept/reject criteria.
PREFERRED
GENERAL HARNESSES
Harness and connectors are clean, damage-free and free of contamination and/or corrosion. Dimensions, layout and identification meet design requirements.
NASA-STD-8739.4 [19.6.1.e]
MANDATORY
BEND RADIUS
Cables and harnesses shall not be subjected to bending forces resulting in radii less than the minimum specified for the most sensitive component (i.e.: coaxial, fiber, etc.) in the assembly.
Best Workmanship Practice
ACCEPTABLE
CONDUCTOR DRESS
All wires are dressed with even bends and sufficient strain relief. Conductor crossover is minimized.
NASA-STD-8739.4 [19.6.1.e]
ACCEPTABLE
OVERALL SHIELDING
An overall braided metallic shield provides mechanical and electrical protection (EMI/RFI) to the harness. Metallic shielding shall exhibit a smooth and tight finish, with a uniform distribution of coverage and no projecting strands.
NASA-STD-8739.4 [11.1.3]
