IPC-A-640, officially titled “Acceptance Requirements for Optical Fiber, Optical Cable, and Hybrid Wiring Harness Assemblies,” provides acceptance criteria for cable and wire harness assemblies that incorporate optical fiber technology. 288 singlemode fibres for high density data center distribution applications. ach ribbon shall have its own sub-unit tube for easy handling and management. The standard was developed by IPC (Association Connecting. Scope: This Standard specifies performance, transmission, and test and measurement requirements for premises optical fiber cable, connectors, connecting hardware, and patch cords. Two ripcords provided beneath the sheath for easy removal This loose tube dielectric optical cable is designed for external underground installations in ducts or by direct burial. XCOM ensures a stable quality control system for our cable products through several programs including ISO 9001, ISO 14001 and OHS. Users of this publication are encouraged to participate in the development of future revisions. 9 QUALITY ASSURANCE REQUIREMENTS – TEST.