By Dean Fredriksen, Scientific-Atlanta Incorporated
The need for automatic piloting of signals in a cable system is well established. As technology has advanced and the demand for cable services has grown, demands on the piloting system have become increasingly more complex. While new systems with extended performance have been designed, it is desireable that new equipment be compatable with old systems as well.
A new approach to automatic control systems utilizes the popular dual-pilot AGC and ASC scheme with some powerful new capabilities: plug-in filters for complete pilot frequency flexibility and plug-in servo cross-coupling networks. The combination of these two features greatly improves the agility and transient response of existing systems into which it may be substituted. In addition, it also permits complete flexibility with any pilot arrangement.