The RS485/422 Star Card is designed to simplify the installation of RS485/422 telemetry systems. Eight individual outputs are provided, allowing star wiring of telemetry systems, TX1500 keyboards and alarm cards. Each output can be connected to a single dome/receiver or up to 32 domes/receivers wired as a daisy chain.
The Star Card can be used with either 2 wire, half duplex; 4 wire, full duplex or simplex systems. It has been tested with the Panasonic FS616 multiplexer in 2 and 4 wire modes and with the SX350 video matrix in 2 wire mode.
The Star Card can also be used with simplex RS485/42 links