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<DIV>Wayne</DIV>
<DIV> </DIV>
<DIV>I could not afford to even do the additional passes. The client in
the post production business will not accept any damage to their tape. And
now, it is even more critical in the transfer business. I can see where
this would apply in the broadcast station where tape gets reused a lot. We
would have to eat the time and tape costs to do any work over that was damaged
in this method. So our standards were different than many other
places.</DIV>
<DIV> </DIV>
<DIV>Chris Hill</DIV>
<DIV> </DIV>
<DIV>
<DIV>In a message dated 7/25/2012 2:26:15 P.M. Eastern Daylight Time,
wayne.watson@sait.ca writes:</DIV>
<BLOCKQUOTE
style="BORDER-LEFT: blue 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"><FONT
style="BACKGROUND-COLOR: transparent" color=#000000 size=2
face=Arial>Celebrating four years of Quad Conversations, July 25,
2012<BR><BR>_______________________________________________<BR><BR>
<DIV>I agree Chris and that is exactly what it looks like. The dots would
become worse (intensify) over many passes. To isolate the magnetized area I
would put a layer or two of scotch tape on, say a post, and then do 10
or 20 passes and look at the dots again. Of course clean the path well after
this.<BR><BR>Wayne Watson</DIV>
<DIV><BR>Sent from my iPad
<DIV><BR></DIV></DIV>
<DIV><BR>On 2012-07-25, at 11:55 AM, "<A title=mailto:chill315@aol.com
href="mailto:chill315@aol.com">chill315@aol.com</A>" <<A
title=mailto:chill315@aol.com
href="mailto:chill315@aol.com">chill315@aol.com</A>> wrote:<BR><BR></DIV>
<DIV></DIV>
<BLOCKQUOTE type="cite">
<DIV><SPAN>Celebrating four years of Quad Conversations, July 25,
2012</SPAN><BR><SPAN></SPAN><BR><SPAN>_______________________________________________</SPAN><BR></DIV></BLOCKQUOTE>
<BLOCKQUOTE type="cite">
<DIV><SPAN>IMHO the rotary head is not the problem. The biggest thing
that I found needing degaussing was the rest of the tape path. The
magnetized areas would show up as fine dots on a diagonal line. This
was caused by erasing a part of the tape. But it would only be a fine
amount and appear to be a
scratch.</SPAN><BR><SPAN></SPAN><BR><SPAN>Degaussing the path and it would
disappear. The problem was that the demagnetization had taken place
and the tape is now degraded.</SPAN><BR><SPAN></SPAN><BR><SPAN>We did the
tape path about every 25 hours of head
use.</SPAN><BR><SPAN></SPAN><BR><SPAN>Chris
Hill</SPAN><BR><SPAN></SPAN><BR><SPAN>On Jul 25, 2012, at 1:32 PM, lee
williams <<A title=mailto:lasvegastvengineer@yahoo.com
href="mailto:lasvegastvengineer@yahoo.com">lasvegastvengineer@yahoo.com</A>>
wrote:</SPAN><BR><SPAN></SPAN><BR>
<BLOCKQUOTE type="cite"><SPAN>Celebrating four years of Quad
Conversations, July 25, 2012</SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE type="cite"><SPAN></SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE
type="cite"><SPAN>_______________________________________________</SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE type="cite"><SPAN>Does anybody have any experience on the
benefits of degaussing the video heads on a Mark IV
head?</SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE type="cite"><SPAN></SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE type="cite"><SPAN>Came across the old maintenance manual for
the AVR3 and Ampex recommended that it be done every 100 hours. (As well
as the entire tape path).</SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE type="cite"><SPAN></SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE type="cite"><SPAN>Is this overkill ?</SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE type="cite"><SPAN></SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE type="cite"><SPAN>Thanks</SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE type="cite"><SPAN>Lee</SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE type="cite"><SPAN></SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE type="cite"><SPAN></SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE type="cite"><SPAN></SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE
type="cite"><SPAN>_______________________________________________</SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE type="cite"><SPAN>Please trim posts to relevant info when
replying.</SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE type="cite"><SPAN></SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE type="cite"><SPAN>Change subject to reflect thread direction.
Thanks.</SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE
type="cite"><SPAN>_______________________________________________</SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE type="cite"><SPAN></SPAN><BR></BLOCKQUOTE>
<BLOCKQUOTE type="cite"><SPAN>Send QuadList list posts to <A
title=mailto:QuadList@quadvideotapegroup.com
href="mailto:QuadList@quadvideotapegroup.com">QuadList@quadvideotapegroup.com</A></SPAN><BR></BLOCKQUOTE>
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<BLOCKQUOTE type="cite">
<DIV>
<DIV>IMHO the rotary head is not the problem. The biggest thing that I
found needing degaussing was the rest of the tape path. The magnetized
areas would show up as fine dots on a diagonal line. This was caused
by erasing a part of the tape. But it would only be a fine amount and
appear to be a scratch.</DIV>
<DIV><BR></DIV>
<DIV>Degaussing the path and it would disappear. The problem was that
the demagnetization had taken place and the tape is now degraded.</DIV>
<DIV><BR></DIV>
<DIV>We did the tape path about every 25 hours of head use.<BR><BR>Chris
Hill</DIV>
<DIV><BR>On Jul 25, 2012, at 1:32 PM, lee williams <<A
title=mailto:lasvegastvengineer@yahoo.com
href="mailto:lasvegastvengineer@yahoo.com">lasvegastvengineer@yahoo.com</A>>
wrote:<BR><BR></DIV>
<DIV></DIV>
<BLOCKQUOTE type="cite">
<DIV><SPAN>Celebrating four years of Quad Conversations, July 25,
2012</SPAN><BR><SPAN></SPAN><BR><SPAN>_______________________________________________</SPAN></DIV></BLOCKQUOTE>
<BLOCKQUOTE type="cite">
<DIV>
<DIV
style="BACKGROUND-COLOR: #fff; FONT-FAMILY: lucida console, sans-serif; COLOR: #000; FONT-SIZE: 12pt">
<DIV style="RIGHT: auto">Does anybody have any experience on the benefits
of <SPAN style="RIGHT: auto" id=misspell-0><SPAN>degaussing</SPAN></SPAN>
the video heads on a Mark IV head? </DIV>
<DIV style="RIGHT: auto"> </DIV>
<DIV style="RIGHT: auto">Came across the old maintenance <SPAN
style="RIGHT: auto" id=misspell-1><SPAN>manual</SPAN></SPAN> for the AVR3
and Ampex recommended that it be done every 100 hours. (As well as the
entire tape path). </DIV>
<DIV style="RIGHT: auto"> </DIV>
<DIV style="RIGHT: auto">Is this overkill ? </DIV>
<DIV style="RIGHT: auto"> </DIV>
<DIV style="RIGHT: auto">Thanks </DIV>
<DIV style="RIGHT: auto">Lee <VAR id=yui-ie-cursor></VAR></DIV>
<DIV style="RIGHT: auto"> </DIV>
<DIV style="RIGHT: auto"> </DIV></DIV></DIV></BLOCKQUOTE>
<BLOCKQUOTE type="cite">
<DIV><SPAN></SPAN><BR><SPAN>_______________________________________________</SPAN><BR><SPAN>Please
trim posts to relevant info when
replying.</SPAN><BR><SPAN></SPAN><BR><SPAN>Change subject to reflect
thread direction.
Thanks.</SPAN><BR><SPAN>_______________________________________________</SPAN><BR><SPAN></SPAN><BR><SPAN>Send
QuadList list posts to <A title=mailto:QuadList@quadvideotapegroup.com
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<BLOCKQUOTE type="cite">
<DIV><SPAN></SPAN><BR><SPAN>_______________________________________________</SPAN><BR><SPAN>Please
trim posts to relevant info when
replying.</SPAN><BR><SPAN></SPAN><BR><SPAN>Change subject to reflect thread
direction.
Thanks.</SPAN><BR><SPAN>_______________________________________________</SPAN><BR><SPAN></SPAN><BR><SPAN>Send
QuadList list posts to <A title=mailto:QuadList@quadvideotapegroup.com
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trim posts to relevant info when replying.<BR><BR>Change subject to reflect
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Thanks.<BR>_______________________________________________<BR><BR>Send
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