Black Box serial adapter

The RS-232 - RS-422 Interface Converter provides bi-directional synchronous or asynchronous conversion of all commonly used RS-232 and RS-422 signals. It is designed to operate with one port configured as Data Terminal Equipment (DTE) and the other port as Data Communications Equipment (DCE). The Converter has two user-selectable configurations: one for connecting RS-422 modem equipment to RS-232 terminal equipment (DCE to DTE) and one for connecting RS-232 modem equipment to RS-422 terminal equipment (DCE to DTE). Both configurations allow bi-directional data transfer.