Roland S-OPT Notes to Observe in Using the REAC System, Use and Handling of REAC Systems

Notes to Observe in Using the REAC System

Use and Handling of REAC Systems

The REAC cable connected to the REAC port used by the REAC system to transmit sound can transmit multi- channel audio signals by using network technology.

In very rare cases, noise may be generated when these systems are used in certain environments. If noise is present, check the following points.

About REAC Cables

As REAC cables use computer network technology, you should pay attention to the following points regarding wiring with network cables.

•Ensure that cables used for REAC connections conform to the Cat5e (Enhanced Category 5) standard.

•No single cable should be longer than 100 meters.

•Do not use cables with cut or torn coverings.

•Do not subject cables to undue stress.

•Do not wind or bend cables such that the radius of the turn is 25 mm or less, and do not double cables over.

•Do not bind cables tightly into bundles.

Notes to Observe When Producing REAC Cables

If you are making your own REAC cables, note the following precautions in addition to those above.

•Use plugs (RJ-45) conforming to high reliability standards.

•Do not separate the wires (twisted pairs) within the cables.

Understanding Cables and Connections

Cat5e Ethernet Cable Types

There are two different types of Cat5e Ethernet cables that you can use with the REAC System. Though the cables look the same on the outside, the RJ45 plugs are wired in different ways. With a:

•crossover cable—some of the wires inside the cable are “crossed over” at each RJ45 plug. As a result, the two RJ45 plugs on each end of a single cable are wired differently.

•straight-throughcable—the wires inside the cable are connected to each RJ45 plug in the same arrangement (each plug is wired the same).

Either a crossover cable or a straight cable can be used for direct REAC connection of the S-OPT to another REAC device.

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