Black Box IC558A

Asyn-Syn Converter HS, RS-232/V.24, 1 x DB25 F, 1 x DB25 M The High Speed Async to Sync Interface Converter plugs directly into a local asynchronous DTE (terminal, PC, etc.) and connects that DTE, via straight-through pinned RS-232 cable, to a synchronous DCE. The Interface Converter is designed to be used in pairs. When the same setup is installed on the remote end, the local and remote DTEs can communicate over the synchronous link.
Drawing power from either the synchronous or asynchronous RS-232 interface, the Interface Converter needs no AC power or batteries to operate and supports RS-232 data rates of 19.2 to 64 Kbps.
Because the Interface Converter automatically adjusts the synchronous data rate to match the asynchronous DTE’s output rate, no data-rate strapping is necessary. The Interface Converter derives clocking externally from the synchronous DCE’s clock, and imposes no limit on data-block size. Characters may be up to 11 bits long.

The High Speed Async to Sync Interface Converter is housed in a sturdy ABS plastic case. It comes fully equipped with a DB25 male connector and a DB25 female connector, which plug directly into the synchronous and asynchronous ports.