THE Model 8277 is a unique asynchronous fibre optic modem whose optical interface can operate in either point-to-point or ring (daisy chain) configurations.
Its electrical interface can also operate in point-to-point or multi-drop configurations depending on the user-selected interface.
The Model 8277 electrical interface, available from Boston Technology , is switch-selectable between RS232, RS422 and RS485.
Switch selection enables data to flow from the electrical interface to the optical transmitter or to be controlled by the Request To Send (RTS) line.
The 8277 is supplied with a power cord for the dc input. Wall mounted adapters are optional.