<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=UTF-8" http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 8.00.6001.18783"></HEAD>
<BODY style="FONT-FAMILY: Arial; COLOR: #000000; FONT-SIZE: 10pt" id=role_body
bottomMargin=7 leftMargin=7 rightMargin=7 topMargin=7><FONT id=role_document
color=#000000 size=2 face=Arial>
<DIV> </DIV>
<DIV><FONT size=2 PTSIZE="10">Again Ted well done! I will check on this in
the morning when I am out at the building.</FONT></DIV>
<DIV><FONT size=2 PTSIZE="10">again many thanks Ed<BR></DIV>
<DIV>
<DIV> </DIV>
<DIV>
<DIV>In a message dated 7/12/2009 11:08:05 P.M. US Mountain Standard Time,
ted@quadvideotapegroup.com 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>Hi,
Ed,
<DIV><BR></DIV>
<DIV>Glad you found the links useful.</DIV>
<DIV><BR></DIV>
<DIV>
<DIV>
<DIV>On Jul 12, 2009, at 10:25 PM, <A title=mailto:COURYHOUSE@aol.com
href="mailto:COURYHOUSE@aol.com">COURYHOUSE@aol.com</A> wrote:</DIV><BR
class=Apple-interchange-newline>
<BLOCKQUOTE type="cite"><SPAN
style="WIDOWS: 2; TEXT-TRANSFORM: none; TEXT-INDENT: 0px; BORDER-COLLAPSE: separate; FONT: 11px Arial; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); WORD-SPACING: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0"
class=Apple-style-span>Seeing one photograph of racks reminds
me... I have the rack part of the video patch bay but do not have any
cables to plug in! It would be nice to set everything up this
way... does anyone have any extras?</SPAN></BLOCKQUOTE></DIV>
<DIV><BR></DIV>
<DIV>
<DIV>You may be easily able to tell what you have by looking at the side of
the jacks and then Google the part numbers. Do that first before jamming
a patch cord in one. The wrong size will either not fit or cause
damage.</DIV></DIV>
<DIV><BR></DIV>
<DIV>This ADC document <A
title=http://www.adc.com/us/en/Library/Literature/106085AE.pdf
href="http://www.adc.com/us/en/Library/Literature/106085AE.pdf">http://www.adc.com/us/en/Library/Literature/106085AE.pdf</A></DIV>
<DIV>explains the differences and the damage that can be caused to an RCA
style jack if you try using a WECO (Western Electric) style patch cord.</DIV>
<DIV><BR></DIV>
<DIV>So, you need to know whether your panel has: </DIV>
<DIV><BR></DIV>
<DIV>WECO or RCA</DIV>
<DIV>75 ohm or 50 ohm (You need 75 for video)</DIV>
<DIV>Terminating or non-terminating</DIV>
<DIV>Normaled or single jack "straight-through"</DIV>
<DIV><BR></DIV>
<DIV>It might have a mix of patch styles. Look closely for part numbers,
and if necessary carefully remove the jacks from the panel to
investigate.</DIV>
<DIV><BR></DIV>
<DIV>Aside from the physical differences, the ADC doc. outlines some problems
using standard WECO jacks and patch cords with Serial Digital signals.
</DIV>
<DIV><BR></DIV>
<DIV>ADC has a special patch cable that allows use of existing WECO jacks with
SDI signals without an impedance problem leading to excessive bit error
rates.</DIV>
<DIV><BR></DIV>
<DIV>Like water flowing downhill, patch bays are usually set up so that if you
have—say— the output of a VTR intended to go to a switcher input, the source
output goes to the top jack and the destination input is fed from the lower
jack, right underneath. </DIV>
<DIV><BR></DIV>
<DIV>This allows the use of "patch plugs" to direct the signal if "Straight
Through" jacks are used in the jack field.</DIV>
<DIV><BR></DIV>
<DIV>A straight-through jack requires a patch cable to work. It may be
terminating (adds a 75 ohm resistor across the circuit when there is no patch
cord inserted) or non-terminating, which requires a termination at the patch
bay if the circuit is active.</DIV>
<DIV><BR></DIV>
<DIV>A "Normaled" jack allows video from the rear upper jack connection to
flow through to the rear lower jack connection without a patch cable in place.
Most patch bays I've run into are "normaled." </DIV>
<DIV><BR></DIV>
<DIV>It makes life a lot easier and requires the use of a patch only if
there's something un-usual going on. Say, patching around a bad device,
or sending a source to a destination that's not available without the
patch.</DIV>
<DIV><BR></DIV>
<DIV>Hope this is helpful.</DIV>
<DIV><BR></DIV>
<DIV>Ted</DIV>
<DIV><BR></DIV>
<DIV apple-content-edited="true"><SPAN
style="WIDOWS: 2; TEXT-TRANSFORM: none; TEXT-INDENT: 0px; BORDER-COLLAPSE: separate; FONT: 14px Helvetica; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); WORD-SPACING: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0"
class=Apple-style-span>
<DIV
style="WORD-WRAP: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space"><SPAN
style="WIDOWS: 2; TEXT-TRANSFORM: none; TEXT-INDENT: 0px; BORDER-COLLAPSE: separate; FONT: 14px Helvetica; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); WORD-SPACING: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px"
class=Apple-style-span>
<DIV
style="WORD-WRAP: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space"><SPAN
style="WIDOWS: 2; TEXT-TRANSFORM: none; TEXT-INDENT: 0px; BORDER-COLLAPSE: separate; FONT: 14px Helvetica; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); WORD-SPACING: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px"
class=Apple-style-span>
<DIV
style="WORD-WRAP: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space"><SPAN
style="WIDOWS: 2; TEXT-TRANSFORM: none; TEXT-INDENT: 0px; BORDER-COLLAPSE: separate; FONT: 14px Helvetica; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); WORD-SPACING: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px"
class=Apple-style-span>
<DIV><FONT class=Apple-style-span size=3><SPAN style="FONT-SIZE: 12px"
class=Apple-style-span><BR class=Apple-interchange-newline>Ted
Langdell</SPAN></FONT></DIV>
<DIV><SPAN style="FONT-SIZE: 12px"
class=Apple-style-span>Secretary</SPAN></DIV>
<DIV><FONT class=Apple-style-span size=3><SPAN style="FONT-SIZE: 12px"
class=Apple-style-span>Skype: <SPAN style="WHITE-SPACE: pre"
class=Apple-tab-span> </SPAN>TedLangdell</SPAN></FONT></DIV>
<DIV><FONT class=Apple-style-span size=3><SPAN style="FONT-SIZE: 12px"
class=Apple-style-span>e-mail:<SPAN style="WHITE-SPACE: pre"
class=Apple-tab-span> </SPAN><A title=mailto:ted@quadvideotapegroup.com
href="mailto:ted@quadvideotapegroup.com">ted@quadvideotapegroup.com</A></SPAN></FONT></DIV></SPAN></DIV></SPAN></DIV></SPAN></DIV></SPAN></DIV></DIV></FONT></BLOCKQUOTE></DIV></FONT></DIV></FONT><DIV CLASS="aol_ad_footer" ID="47668a981d69b0aa821f5e41238402ae"><br/><font style="color:black;font:normal 10pt arial,san-serif;"> <hr style="margin-top:10px"/>Looking for love this summer? <a href="http://personals.aol.com/?ncid=emlcntuslove00000003">Find it now on AOL Personals</a>.</font></DIV></BODY></HTML>