[QuadList] Changes in Post over the years (wasElectronicEditing Notes)

[Don Norwood]

Bill:

Very interesting.  I have only manuals for the 7800, no machines, so I was going on what I had seen there.  If I'm understanding this correctly, the original 7800 did not have flying erase but it was added to the 7800 late in production?  When the 7900 came out in '70, the literature claims this as a "new" feature.  I should know better than to believe the Ad guys!  This kind of info is very helpful in getting the proper history sorted out.  Thank you!

Don

  ----- Original Message ----- 

  Don,

  The flying erase head was added before the 7900, because I worked on the design on the 7800 and then tested it, and made good color edits. The circuity to drive the erase head was placed under the top transport trim, just  to the left of the scanner, between it and the supply reel. I remember changing the rotary transformer and get a signal that would turn it on to erase the video at the proper time.
  I believe that this was done in late 1978, and we introduced it at NAB 79, in Washington.

  Bill


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