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Product Description

The Model 570 Short Haul Multiplexer increases the efficiency of data links and twisted pairs, by allowing simultaneous data transfers between sixteen devices. Each Model 570 has eight RS-232 ports that can support terminals, printers, computers, or other custom systems. The composite port features a built-in line driver with the ability to communicate over 5,000 feet of twisted pair. An internal switch and jumpers allow changing the configuration to support composite link distances of 8,000 feet and maximum per port data rates of 9.6 KBPS.Performance is outstanding, providing simultaneous 19.2 KBPS operation, end-to-end, on all eight channels. Each port supports full duplex data and one control signal in each direction. The typical configuration is DTR and DCD, however, these connections can be easily changed using the supplied adapters.The Model 570 does not require any configuration setup. Each channel can operate at its own data rate, up to 19.2 KBPS. Different speeds in each direction are easily accommodated.If the environment for the composite link is severe, i.e., direct lightning strikes, then the Model 270 can be used with the Quick Mux to change the twisted pair to fiber optic cable.

Diagnostics

Built in diagnostics include local loopback and remote test switches. Local loopback loops input data on itself after being processed by the 570 Quick Mux. The Remote Test switch sends a pattern down to the remote 570. Upon detection of this pattern, the remote 570 automatically loops back the composite link. The originating mux activates its Remote Test indicator upon correct reception of the looped back pattern. These two tests establish the operational status of the complete 570 and the composite link.

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