Video-Tape Recording Interchangeability Requirements

The use of video tape in broadcasting service often requires that recordings be played back with a different head assembly than was employed for the original recording. If such interchangeability of head assemblies is to provide optimum quality, it is essential that close control of many manufacturing parameters and operating standards be maintained. In present-day multiple head equipment, mechanical dimensions of particular importance include those relating to the video-track azimuth, pitch, and width as well as the angular placement of the four rotating heads. Essential electrical parameters include the value of carrier frequency corresponding to reference video levels. In addition, response-frequency characteristics of audio, video and carrier frequency channels must be standardized. The significant factors are discussed relative to proposed industry standards and current CBS Television Network practices.

Print ISSN

0361-4573

Published

1960-12

Content type

Original Research

DOI

10.5594/J15529