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

[David Dean]

I have just looked at my head block and the A3 track is on the lower edge of 
the stack, nearest the deck plate, two further considerations, the control 
track head is on the Video Head  and the tape is wound oxide out on the 
supply reel, ( like the take up on a VPR2 !).

David Dean
Westpoint Television
Archiving Services
2" Quad , 1" B, 1"C, D1, D2, D3, D5, HDCam and HDV
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----- Original Message ----- 
From: "Ted Langdell" <ted at quadvideotapegroup.com>
To: "Quad List" <quadlist at quadvideotapegroup.com>
Sent: Monday, April 02, 2012 5:51 AM
Subject: Re: [QuadList] OT: 1" Type-B format question


> Where's that bottle of EdiiVue when you need it?  :)
>
> Ted
>
> Sent from my iPhone
> (530) 301-2931
> Skype: tedlangdell
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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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> Please trim posts to relevant info when replying.
>
> Change subject to reflect thread direction. Thanks.
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