By Edwin M. Gunn, Jr., Scientific-Atlanta
The following paper describes some of the installation considerations necessary in implementing a satellite-delivered digital audio system into an existing cable system. Areas of discussion include satellite reception, headend configuration, signal carriage, distribution architecture, and input requirements at the subscriber locations. It is important to the cable operator that a system provide the flexibility to adapt within the overall architecture of the system. Systems typically want to preserve bandwidth or simply have very little bandwidth in which to work. The digital audio service must operate well in spectrum not necessarily suitable for video channels. Therefore, the challenge for a digital audio service is to find available spectrum that will provide quality signals throughout the system.