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Product Description

The Model 278 Fiber Optic Short Haul Modem provides an enhanced digital solution for connectivity between a workstation and a server running a campus internet link. These links utilize SLIP/PPP protocols that require two out-of-band signals. One of these signals must be at least one eighth of the data rate, RTS/CTS whereas the second can be slower, DTR/DCD/DSR. This capability coupled with fiber optic link support produce a device that is immune to noise, surges, lightning, RFI and ground loops. The Model 278 passes data, full duplex, at rates from 0 to 115.2 KBPS. The RTS/CTS and DTR/DCD/DSR bidirectional control signals are transferred in one byte time, or at rate of 14.4 KBPS. This performance provides ample reserve to meet current Internet SLIP/PPP protocols and improvements as they are made. Indicators are provided for TD, RD, RTS, CTS, DTR, DCD, Line Error, Fiber Signal Valid and Remote Test.

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