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

[Don Norwood]

Hi Ted:

Ampex had an adapter cable to convert from the 528 to the 1730, and then a later version for the 1750 et al.

I can scan the diagram for you.  Also, a very helpful feature of the 1730 is the memory setups.  You can use them to recall the test setups very easily.  

I'll send the scan shortly....have to go pull the file.

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

----- Original Message ----- 
  From: Ted Langdell 
  To: Quad List ; Old Vtr 
  Sent: Monday, January 17, 2011 7:20 PM
  Subject: [QuadList] VPR-80 QC switcher w/Tek 528 Octal plug--How totranslate function to Tek 1730?


  Howdy from California (again) after a dozen days in Berlin...


  I'm updating the scopes in an Ampex VPR-80 sidecar package.  A Tek 1720/1730 pair are replacing the original Tek 528/1420 setup in the sidecar.


  In connecting the wiring harness... we have a round 9-pin plug that went to the 528... (pictured) and no matching connector on the 1730.







  The VPR-80 manual harness diagram shows that one of the two wires between the QC switcher and the scope connector is a "Sync Ctl" line. 


  The other has -15 Volts (from the scope?) and goes from SubD Plug 9/Pin6 on the switcher to pins 2, 6 and 9 of  9-pin plug called P370 on the scope.


  It appears to change the scope's sync input when switching from video to Demod or AST Error modes.


  So, my question is... what pins do we use on the 1730 to accomplish the desired functionality?


  Please e-mail a reply that includes off-list to ted at flashscan8.us.  


  I'll get it on my iPhone more quickly.  Am putting the package together now for delivery tomorrow. 


  Thanks much in advance.


  Will post pix with the results.


  Ted


  Ted Langdell
  Secretary
  Skype:  TedLangdell
  e-mail: ted at quadvideotapegroup.com




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