[QuadList] Electronic Editing Notes

[Trevor Brown]

HI Chris

I have never edited on a TR 70c but the company I worked for did own a TR61
which was the same servo draw
and it would perform Push and Pray edits. The edit controller is just a
magic finger that let you rehearse the edit and then will press the button
for you at the correct time.

The machine performs the same edit process either way

RCA adjustments revolved around erase delay, and for Assembly edits (Add On)
free running the capstan in play is essential
by adjusting its speed so the sample pip stayed on the capstan trap for four
seconds after the simulate toggle was pressed  
It helped if the sample pip went off the trapezoid top rather than bottom so
the tape would go faster rather than slower, then the tracks would space out
rather than bunch up.

Remember the VT must be in switch lock and control track phase adjustment
prior to the edit is very important

Someone also mentioned a few emails back about keeping the stab dots on the
serration box, try that on a TR50 they jitter all over the place
I would not like to splice any of its recordings

I think our TR50 started life as a TR4 so it probably was not a good example

TrevorB
UK Member 
 

-----Original Message-----
From: quadlist-bounces at quadvideotapegroup.com
[mailto:quadlist-bounces at quadvideotapegroup.com] On Behalf Of Guy Spiller
Sent: 30 January 2010 02:25
To: Quad List
Subject: Re: [QuadList] Electronic Editing Notes

David,
My experience agrees with yours.  Having done many edits back in the day 
on a 2000, TR-22s and 70s,  I also found the RCAs to be considerably 
more consistent as far as edit stability is concerned.  A note here:  
all of the quad edits in my career were either done "punch and pray" or 
with an Editec.  I have never personally experienced a quad under editor 
control.
The RCA servos also seemed to be much more stable...regardless of 
ambient temperatures, and didn't need constant fiddling with 
discriminators and such on your knees in front of the Intersync.
A more stable servo would certainly help to explain the observed 
somewhat more reliable edit performance.
I have not yet attempted any edits on these 70Cs, but it would be 
interesting to see if the edits are as consistently good as the earlier 
versions.  The C has much "tighter" servos.
Anyone on the list have 70C editing experience they would care to relate?
Guy


dcfwtx at aol.com wrote:
> Chris,
>
> In my experience with a tape facility with RCA and Ampex edit devises, 
> the RCA TR 70's made a more predictable edit in insert from a 
> stability standpoint than the VR 2000. They both thad their routines 
> and procedures for setup, and your success with the edit was generally 
> seen by the bounce of the Colortec/Amtec/stab dots. The RCA seemed to 
> always be a lot easier to get a real nice looking edit. Color framing 
> also seemed more predictable on the TR 70's. 
>
>
> David Crosthwait
> DC Video
> www.dcvideo.com
>
>
>
>   
Guy Spiller

email: quadruplex at verizon.net
phone: (804) 379-2050
website: www.GuySpiller.com
Midlothian, VA


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