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Adjust the cable length compensation if the cable between the Driver and the wallplate/receiver is over 100 feet long. Set the compensation at 1 for cables 100-199 ft. long, and 2 for 200-299 ft. cables, etc. Do not permanently mount the wallplate/receivers until after system testing. Carefully connect the A and B cables to the Driver(s), power the source components, TVs and AV receivers, and plug in 9871 power supplies to test the system. Connect a TV to each wallplate/receiver location to refi