68-Pin Female SCSI to Female BNC and Screw Terminals, Function Generator and Encoder, Desktop Mount, Shielded Terminal Block—The BNC-2121 features eight dedicated and six user-defined BNC connectors and spring terminals, which allow access to all I/O signals. You can also use this terminal block to provide pulse-train, trigger, and quadrature encoder signals. The BNC-2121 includes a desktop mount.