In-house practices--Jump in with more!--(Was QL Capstan Information)

[Ted Langdell]

This description of practices and problem solving (and problem-avoidance) is just the sort of thing that makes the QuadList a useful and practical resource.

Please, everyone jump in at once with more. :)

There are other posts going back in time that are similar in nature and help. 

Are there are folks with time on their hands who would be interested in combing the QuadList for these sorts of posts, and compiling the content from threads?  

It would become pages regarding specific areas we can index and put on the website as a more easily used and accessed resource.

The Cinematographer's Mailing List (CML) has done this quite well over the years, pulling together a great amount of info, under the heading "Edited Discussions."

Here's a link to one section: http://www.cinematography.net/Working%20Practise%20TOC.htm

Let me know if you have time to participate in this kind of venture.

Ted

Ted Langdell
Secretary
Quad Videotape Group
e-mail:	ted at quadvideotapegroup.com

On Sep 25, 2014, at 9:14 AM, Chris Hill via QuadList wrote:

> 
> 
> From: Chill315 at aol.com
> Date: September 25, 2014 9:14:31 AM PDT
> To: john at jmit.com.au, quadlist at quadvideotapegroup.com
> Subject: Re: [QuadList] Capstan Information
> 
> 
> Everyone is correct so far.  The VR-3000 was making tapes that were not to standards.  We had a local facility that did industrial videos and used a VR-3000 as a record device.  They had the AVR-1 as a playback.  It always worked.
>  
> So what is standard for the control track?  I would have to go get a book and study it a bunch.  But here is what we did to compensate for all the little variances in manufacture of a video head to control track head spacing.
>  
> When doing an Intersync alignment, we would use the alignment tape as a playback for centering the tracking control.  There were four (?) pots that would set it for each position of the head selector.  This meant that the machine would play any tape recorded to standard with the tracking knob at 12 o'clock.
>  
> Next would be to record on blank stock using the procedure to put the frame pulse at the top of the control track 240 Hz sine wave.  When playing this recording back, if the tracking know had to be moved from the 12 o'clock position, then the recoding was not to the same standard as the alignment tape.  I would then move the frame pulse a bit left or right and then try again until the tracking knob on playback was straight up. 
>  
> This procedure compensated for the minute tolerances in manufacturing.  There is an adjustment on the Mark X heads to move the control track head but we never considered doing this as it was a chance to do more damage and a big waste of money. 
>  
> Our goal was to create tapes that were as close as possible to perfect.  We strived to get recordings and playbacks to the highest quality possible.  It was easy once the mind set was created and procedures were followed.  Peoples jobs actually became easier and they were able to concentrate on the creative end and not worry about the technical end.  Thus we got a reputation as a quality house. 
>  
> Hope this helps with the thought process.
>  
> Chris Hill
> WA8IGN
>  
> In a message dated 9/24/2014 11:53:50 P.M. Eastern Daylight Time, john at jmit.com.au writes:
> Just as an aside, Don, we found playing back a tape from a 3000 on a 2000
> required the use of non standard tracking on the intersync - this was the
> case for all 6 of our 2000's. Our Avr1 and AVR 2 just played it - what was
> the go here?
> 
> John Miller
> Creations Unlimited
> Rocky River
> NSW Australia 
> 
> -----Original Message-----
> From: QuadList [mailto:quadlist-bounces at quadvideotapegroup.com] On Behalf Of
> Don Norwood via QuadList
> Sent: Thursday, 25 September 2014 11:42
> To: Chill315 at aol.com; quadlist at quadvideotapegroup.com
> Subject: Re: [QuadList] Capstan Information
> 
> 
> 
> 
> 
> ______________________________________________
> Please trim posts to relevant info when replying.
> 
> Change subject to reflect thread direction. Thanks.
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