[QuadList] VPR-2 was ACR-25 Cue Times was: Ampex Models

Fri Mar 11 19:31:50 CST 2011

David and Gary...

Regarding "slo-mo" VPR-2...

During a CBS football remote at The orange  Bowl...

I had a 90 minute reel of tape loaded on the  machine
and after a lot of pre-pro and stuff...  we went  into
the LIVE game...  of course I had the first  replay...
and the machine WOULD NOT ROLL...  Either hitting  PLAY
or by hand!!!  My machine was ON LINE for what seemed  like an
eternity, BUT just a FREEZE FRAME!!  DAM!!

Well the CBS EIC came storming into the tape  truck
screaming various phrases!!  

He couldn't get the tape to roll either!!  we were a 
non-union house, so he could "touch" the  machine!!

The problem was "stiction" at the head of that big  reel.

After all the pre-pro, we were told to rewind to the head of  bars and roll 
on the game from there.  The machine
didn't like the tape for some reason.

Got around the problem by winding into the reel a
bit.  The EIC was not happy...

BTW, CBS supplied and specified the 90s for the game.   ;-)

Don Murray, W4WJ
Retired from 40 years of Miami TV Engineering
35+ years at NBC O&O WTVJ  

In a message dated 3/11/2011 4:50:33 P.M. Central Standard Time,  
david at dcvideo.com writes:

Gary,  

"Ampex was the absolute best at designing such  systems.  Very good at DC 
servos for max acceleration and deceleration  with a gentle touch... On the 1”
 machines, the ability to grab a reel and move  it to jog the tape by hand. 
 Nice touch. "

I'd say that's why so many NBC sports slo-mo guys from NYC preferred a  
truck with 1" VPR 2's so as to be able to grab the reels and do the slo-mo by  
hand, as apposed to the controller running the transport. The VPR 2  most  
likely would not spill tape if done right, a must on live sports.

Don's truck had VPR 2's. Ran them on NFL football in Miami in the  80's.

David
(So-mo operator back then...)
_www.dcvideo.com_ (http://www.dcvideo.com/) 

On Mar 11, 2011, at 11:08 AM, Gary Adams wrote:

I  would say that Ampex was the absolute best at designing such systems.   
Very good at DC servos for max acceleration and deceleration with a gentle  
touch.   Very impressive.  RCA stuck with the old AC motor  drivers for 
everything just about and that made for a very rubbery control  of reel servos 
and belt drive.  On the 1” machines, the ability to grab  a reel and move it 
to jog the tape by hand.  Nice  touch. 

Gary

From: _quadlist-bounces at quadvideotapegroup.com_ 
(mailto:quadlist-bounces at quadvideotapegroup.com)  [mailto:quadlist-bounces at quadvideotapegroup.com] On 
Behalf Of _W4wj at aol.com_ (mailto:W4wj at aol.com) 
Sent: Friday, March 11, 2011 1:50  PM
To: _quadlist at quadvideotapegroup.com_ 
(mailto:quadlist at quadvideotapegroup.com) 
Subject: Re: [QuadList] ACR-25 Cue Times  was: Ampex Models

Ah...   Forgot about that one Dennis...  Very  good!!

All  the movement parameters in the ACR-25

were  designed to minimize the time required

to  perform an operation...  i.e.  NO OVERSHOOT!!   ;-)

Don  Murray, W4WJ

Retired  from 40 years of Miami TV Engineering

35+  years at NBC O&O WTVJ  

In  a message dated 3/10/2011 4:33:06 P.M. Central Standard Time, 
_DennyD1 at verizon.net_ (mailto:DennyD1 at verizon.net)  writes:

On Mar 9, 2011, at 5:20 PM, _W4wj at aol.com_ (mailto:W4wj at aol.com)  wrote:

> The machine  spun the carousel the shortest distance to get to the  
next bin to  play...

I add:

It  also used a ramping profile to accelerate and decelerate the  bin  
carousel as it  rotated from bin to bin.

Dennis Degan, Video Editor-Consultant-Knowledge Bank
NBC  Today Show, New  York

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David Crosthwait
DC Video
Archived Media Transfer and Re-mastering Services
177 West Magnolia Blvd.
Burbank, CA. 91502
818-563-1073
818-563-1177 (fax)
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_DAVID at DCVIDEO.COM_ (mailto:DAVID at DCVIDEO.COM) 
_WWW.DCVIDEO.COM_ (http://www.dcvideo.com/) 

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