Digital Video and Audio Transmission Alternatives

As television plants convert to serial digital video and digital audio, it becomes apparent that the analog and digital transmission requirements are vastly different. — In the analog video world, it is necessary to select the proper cable equalizer based on the characteristics of a coaxial cable to correct for the high frequency loss over short and moderate distances. For digital transmission, automatic equalizers are common, eliminating equalizer selection. Transmission distances are limited to about 300 meters (1000 ft) of coaxial cable, depending on the data rate and the characteristics of the cable. In many cases this is adequate in a television plant, but fiber optic links can offer a better solution where longer distances are necessary. This will be especially apparent as we move to HDTV where bit rates will be much higher.

Published

1995-09

Content type

Original Research

DOI

10.5594/M00487

ISBN

978-1-61482-923-2