Transport up to eight full rate HD-SDI digital video signals at 1.5Gbps each over a single strand of fiber cable up to 80km long. In addition dual Aux ports provide additional capacity by adding up to 4 analog bi-directional audio, 2 full duplex RS-232/422 links, or 4 contact closure lines per Aux interface. The transmitter inputs support any serial digital signal up to HD-SDI, including SD-SDI or DVB-ASI digital video signals. The F-M8SDI platform delivers more functionality and performance over a single fiber than has ever been available in off the shelf equipment. Each of the 8 HD-SDI signals are fully isolated from each other and operate at a full 1.5 Gbps data rate. Each channel carries its own embedded audio and ancillary data and operates as if it were the only signal on the fiber. This is accomplished with CWDM technology. The 8 channel platform offers the same 5 pin Aux port custom signal options as the two and four channel units. However functionality is doubled by providing 2 independent Aux links that can be customized for 4 channel bi-directional or unidirectional audio, 1 or 2 duplex RS-232/422 links, or 4 line contact closure.