From the Sound Devices web site:
Although the RS-232 standard allows for cable lengths of up to 50 feet, the recommended maximum length of C.Link cable between any given pair of 7-series recorders is 4 feet. Longer cables lengths introduce the risk of the slave unit losing word clock synchronization with the master unit.
Has anyone had success running long link cables (between 4 and 50 feet)? Or longer?