Audio and data system switching device e.g. for satellite transmission

摘要

The device includes a control circuit which controls a digital audio satellite system and alternative circuits (I,II) for transmitting audio and data signals over alternative routes. The transmission of audio signals, user data and status signals is controlled. The switching device provides audio signals for VHF transmission of data signals for an RDS coder. Status and control signals (status relay, remote relay, TTL) are exchanged between the switching device and the system via transmission lines.