Black Box RS232 to RS-422 Interface Bidirectional Converter

RS422 pin-outs match an SMPTE video standard-compatible controlling device. For DB9 equipment, if the peripheral operates on the RS422 signal, use only one DB9 converter. But if the transmitting and receiving equipment only operates on RS-232, use two converters. Provides 115.2-kbps speed for distances up to 4000 feet (1219.2 m). Transmit data up to 115 kbps or at distancesup to 4000-ft. Operates point to point only. 4-wire operation, full-duplex. Async (data leads) only. Interface powered by the RS232 control leads.