76-Pin Flying Leads Female to 68-Pin VHDCI Male, 50 Ω, Shielded Digital Cable—The SHC68-H1X38 Digital Cable connects NI 6535/6/7, 654x, 655x, and 657x digital instruments directly to individual header pins for use with a custom breakout fixture. The flying-lead cable has paired signal and ground lines for each channel to preserve signal quality. Each signal and ground line is designed to plug directly into any 0.1 in. header connector. It is a shielded, 50 Ω cable.