[QuadList] VPR-80 QC switcher w/Tek 528 Octal plug--How to translate function to Tek 1730?

[Bill Carpenter]

 Yes, all the 528's that I ordered for the AVR-2's, had the sync mod factory 
installed.

I was told by some of the Old Quad Folks, and my boss, 
(I had been in Quad Product Management  for only 20 months when I introduced the 
AVR-2 in 1974 ) 

that the monitor bridge w/ the 650/602/528 combination would never sell well.
(slot mask color, not a true vector scope, and a very simple WF monitor)

After the first year, it was about 75% of the systems that were sold with the 
loaded bridge. This was over 200 systems.

And we were the largest single customer, that Tektronix had at that time.


Bill Carpenter




________________________________
From: Don Norwood <dwnorwood at embarqmail.com>
To: tim at lionlamb.us; Quad List <quadlist at quadvideotapegroup.com>
Sent: Mon, January 17, 2011 7:39:45 PM
Subject: Re: [QuadList] VPR-80 QC switcher w/Tek 528 Octal plug--How to 
translate function to Tek 1730?

----- Original Message ----- From: "Tim Stoffel"

> The matching connector on a 1730 is a DB connector of some sort. You
> have to replace the round plug. I do not have the pinout handy. It may
> also be possible that the 1730 needs an option to support that
> functionality. By the time those 'scopes came out, it may have not been
> a standard feature anymore.
> 
> That plug is not needed for normal operation. The operator just needs to
> know when to change sweep speeds for the various WFM selector functions.

I've sent Ted the diagram, but yes, the operator can also just change the scope 
settings, and on the 1730, the memory recall makes it easy to save the proper 
settings and select them anytime with a single button.

Interestingly, the 1730 doesn't need any modification, it was the original 528 
that was modified.  Tek had a mod that was installed in the scope to allow the 
VTR to control the sweep and sync settings, temporarily overriding the normal 
operating controls.  There were slightly different mods for the 528 and 528A, 
but without those, the 9-pin socket was only for the RGB parade display.

Don Norwood
Digitrak Communications, Inc.
www.digitrakcom.com 

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