[QuadList] NBC Control System

[Dennis Degan]

			On Apr 6, 2009, at 3:14 AM, Phillip G. Shaw wrote:

 > The ZSD (1 line delay) installation made the Control Room daisy 
chains (re-entry) simpler. The ZSD was a modified NEC FS18 Frame sync. 
It was not until 1995 that we were able to replace those with a Leitch 
(2 line Delay)

			I add to my previous message:

	Is this what I just described in my previous email?  I don't remember 
it involving a frame synchronizer.

			Dennis Degan, Editor-Consultant-Knowledge Bank
	  				NBC Today Show, New York