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<DIV><FONT size=3>Ed:</FONT></DIV>
<DIV><FONT size=3></FONT> </DIV>
<DIV><FONT size=3>I agree completely with Chris's comments. If
you have off-air recordings of broadcast video, then as long as the TBC
will deal with the lack of burst, you may be OK. The
problem comes with tapes made from B&W non-broadcast
cameras. It was VERY common in the days of B&W EIAJ
recordings to have cameras that did NOT produce RS-170 sync. At the worst,
many were random interlace. The next step up was fixed interlace, but
often without equalizing pulses and with non-conforming widths for sync and
blanking. </FONT></DIV>
<DIV><FONT size=3></FONT> </DIV>
<DIV><FONT size=3>In modern-day equipment, just about everything that uses a
composite video input expects to see burst present. In doing quad
transfers, there can be problems with B&W quad tapes due to the lack of
burst, necessitating the addition of burst before the signal is
usable.</FONT></DIV>
<DIV><FONT size=3></FONT> </DIV>
<DIV><FONT size=3>Don </FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=COURYHOUSE@aol.com
href="mailto:COURYHOUSE@aol.com">COURYHOUSE@aol.com</A> <FONT id=role_document
face=Arial color=#000000 size=2></DIV>
<DIV> </DIV>
<DIV><FONT size=2 PTSIZE="10">
<DIV>oh...... I am going to have to look ito this...</DIV>
<DIV><FONT size=3></FONT> </DIV>
<DIV>
<DIV>In a message dated 7/12/2009 10:36:27 A.M. US Mountain Standard Time, <A
href="mailto:Chill315@aol.com">Chill315@aol.com</A> writes:</DIV>
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<DIV>This brings up some more cans of worms.</DIV>
<DIV> </DIV>
<DIV>Is the sync on the tape NTSC EIA sync? If not, the TBC may not
recognize the Vertical interval and memory addressing will be an
issue. Plus if not interlaced, I have no idea what will happen.
This is experimental territory for me.</DIV>
<DIV> </DIV>
<DIV>Next, you have to make sure that the TBC will process Black and White
signals. A multiple of 3.58 is used in all TBC's to generate a write
clock. Usually 4X but also 3X. If there is not a color burst,
then the TBC has to generate a write clock. Many times this is done
with an oscillator that is referenced to the H sync frequency. Make
sure that the TBC can do this.</DIV>
<DIV> </DIV>
<DIV>Wish you luck with this one.</DIV>
<DIV> </DIV>
<DIV>Chris
Hill</FONT></FONT></FONT></FONT></DIV></BLOCKQUOTE></DIV></DIV></BLOCKQUOTE></BODY></HTML>