This guide covers what you need to know about IPC-A-640: the class system, key acceptance criteria, inspection requirements, and how it relates to other IPC standards. What is IPC-A-640?ic system. Corning recommends that all fiber optic systems be tested to a minimum set. e cited in contract, program, and other Agency documents as a technical requirement. This Standard may also apply to the Jet Propulsion Laboratory other contractors, grant recipients, or parties to agreements only to the extent specified or referenced in their contracts, grants, a ontain. That's why IPC developed IPC-A-640, the acceptance standard specifically for optical fiber, optical cable, and hybrid wiring harness assemblies. Cable Installation Acceptance Test: conducted after cable burial.
[PDF Version]