[QuadList] OT: 1" Type-B format question

[Ted Langdell]

Where's that bottle of EdiiVue when you need it?  :)

Ted

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On Apr 1, 2012, at 6:18 PM, "Don Norwood" <dwnorwood at embarqmail.com> wrote:

> Hi Dennis:
> 
> I believe the diagram is correct, and I now think that the illustration does match the top and bottom orientation of the tape as it comes off of the supply reel.  However, I had the same thought that you did....that the location of the control track seemed less than ideal.
> 
> This all started when I received what was said to be a Type-A tape to transfer.  Loading it on the machine revealed that audio on Ch1 was OK, but there was no video.  A check of RF showed nothing, and a further check showed that the control track appeared to be time code!  Loading it on a Type-C machine further confirmed the location of the tracks.  The speed was correct, but none of the tracks appeared to be arranged as they should be for 1" Type-A, B, or C although the tape was recorded in '78, so it could have been any of the 3 formats
> 
> Turns out that the tape had previously been sent to another company for transfer and they had determined that it wasn't Type-C, and so assumed that it was Type-A.  What I believe happened at some point, was that the tape which is apparently Type-B, was rewound onto the reel with an A-wind instead of the B-wind that is normal for Type-B tapes.  That obviously resulted in the tape being flipped vertically, and so all of the tracks were "upside down" from what I expected to see, and didn't match any format that I knew of.  Reloading it on the reel with a B-wind puts everything where it should be for Type-B.
> 
> It did surprise me that neither the Type-A or Type-C machines could "see" any RF at all.  I realize that the track alignment is drastically different and it would never "work", but I expected some sort of jumbled RF envelope to appear.  It didn't.
> 
> Don Norwood
> Digitrak Communications, Inc.
> www.digitrakcom.com
> 
> ----- Original Message ----- From: "Dennis Degan" >
>> On Mar 31, 2012, at 9:53 PM, Don Norwood wrote:
>> 
>> > Can someone confirm that on the diagram below, the lower edge of
>> the tape is as shown, in other words, Audio 3 is located at the bottom edge of the tape as it comes off of the supply reel?  Thanks!
>> 
>> I can't answer your question, but if the diagram is correct, it  looks like they put the CT BETWEEN the two audio channels.  That's nuts.
>> 
> 
> 
> Please trim posts to relevant info when replying.
> 
> Change subject to reflect thread direction. Thanks.
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