236 lines
11 KiB
HTML
236 lines
11 KiB
HTML
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<!doctype HTML public "-//W3C//DTD HTML 4.0 Frameset//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
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<meta http-equiv="Content-Language" content="en-UK">
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<meta name="generator" content="Adobe RoboHelp 9">
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<title>BNC Sync</title>
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<link rel="StyleSheet" href="HtmlHelp.css" type="text/css">
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<style title="hcp" type="text/css">
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<!--
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p.hcp1 { margin-left:40px; }
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img.hcp2 { border:none; }
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p.hcp3 { color:#ff0000;
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margin-left:40px; }
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span.hcp4 { font-weight:bold; }
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span.hcp5 { mso-ansi-language:EN-US; }
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p.hcp6 { font-weight:bold; }
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p.hcp7 { font-weight:normal; }
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-->
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</style>
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</head>
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<body>
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<h1 class="firstHeading">BNC Sync</h1>
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<p><img src="buddylink.jpg" alt="Image:buddylink.jpg" border="0"></p>
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<p>Film studios, broadcast and theatres can benefit from the external word
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clock sync capability of the London Series via the BLU-800/BLU-805/BLU-806
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and BLU-320/BLU-325/BLU-326
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rear panel BNC IN connectors.  The supported sync frequencies are
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48kHz, 48kHz pull-down (47.952kHz), 96kHz and 96kHz pull-down (95.904kHz).
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 Synchronizing the Soundweb London internal DSP processing clock
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to the House clock avoids having to use Sample Rate Conversion, resulting
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in superior audio.</p>
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<h1>Operation - To set up a system to use an external word clock as the
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master clock for the BLU link ring</h1>
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<ul type="disc">
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<li><p>Set 'Sync to BNC' or 'Sync to BLU link' in the <a href="Device Properties Pane.html">properties</a>
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for the device. </p></li>
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<li><p>The BLU-800 or BLU-320 by default will sync to <a href="Cobranet Information.html">CobraNet</a>
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if there is a valid CobraNet connection, otherwise they will sync
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to BNC or BLU link.  The BLU-805 or BLU-325 by default will sync
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to AVB if there is a valid AVB connection, otherwise they will sync
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to BNC or BLU link. The BLU-806 or BLU-326 by default will sync to
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BNC or BLU link since the DANTE card will then sync externally from
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the device clock. If there is neither a valid CobraNet or AVB connection
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these devices will then sync to the <a href="BLU_link.html">BLU
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link</a> bus, this can be seen on the control panel for the device.</p></li>
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</ul>
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<p class="hcp1">  <img src="PanelSyncBLULink.png" alt="" border="0" class="hcp2"></p>
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<ul type="disc">
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<li>Set 'Sync to BNC' or 'Sync to BLU link' in the <a href="Device Properties Pane.html">properties</a>
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for the device. The BNC can be selected as the word clock for the
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BLU-800 or BLU-320.  More than one device can be selected to
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sync to BNC,   BNC Sync will be indicated on the device
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control panel.</li>
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</ul>
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<p class="hcp3"><img src="BNC_Sync.png" alt="" border="0" class="hcp2"></p>
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<ul type="disc">
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<li><p>The word clock can be applied to all BNC devices.  This
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means that if one of the BNC devices loses its word clock (e.g. BNC
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cable has been pulled) the system will continue to be synchronised
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to the word clock via another device.</p></li>
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<li><p>The Mastership Priority of the BNC units must be set to a higher
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value than all other units which do not have Sync to BNC selected
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in the properties, the BNC device with the highest priority will be
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the master for the BLU link ring.</p></li>
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</ul>
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<p class="hcp3"><img src="BNC_Master.bmp" alt="" border="0" class="hcp2"></p>
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<ul type="disc">
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<li><p>If this is not the case then London Architect will prevent you
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from going online. Mastership priority is set on the <a href="Device Control Panels.html">device
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control panel</a>,   254 is the highest priority, 0 is the
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lowest. </p></li>
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</ul>
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<p style="color: #ff0000;"><img src="BNC_Priority_Warning.bmp" alt="" border="0" class="hcp2"></p>
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<ul type="disc">
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<li><p>If the BNC input is invalid (cable missing or incorrect word
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clock) the device will synchronise to the <a href="BLU_link.html">BLU
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link</a> bus.  The control panel for the device will indicate
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both BNC and Error to indicate that there is an invalid word clock.</p></li>
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</ul>
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<p class="hcp1"><img src="BNC_Error.png" alt="" border="0" class="hcp2">I</p>
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<ul type="disc">
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<li><p><span class="hcp4">DO NOT USE COBRANET</span>
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<span class="hcp4">OR AVB</span> on any devices which
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synchronise to an external word clock as the CobraNet (or AVB) clock
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will not be synchronised to this clock and it would produce undesirable
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audio effects.  A yellow warning triangle will be shown on the
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CobraNet or AVB nodes of the device icon of CobraNet or AVB devices
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where Sync to BNC or Sync to BLU link has been selected in the device
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properties.  </p></li>
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<li><p>Dante networked audio can be used on devices which sync to external
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word clock as it does support this.  However it does not support
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the pull-down frequencies.  Under this condition the Dante card
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 will not be synchronised to the device clock and it would produce
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undesirable audio effects.  A yellow warning triangle will be
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shown on the Dante nodes of the device icon where Sync to BNC or BLU
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link has been selected with pull-down frequencies in the device properties.</p></li>
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</ul>
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<p class="hcp1"><img src="Coba_Warning.png" alt="" border="0" class="hcp2">       <img src="AVB Files/AVB Warning Triangles.PNG" alt="" border="0" class="hcp2">      <img src="DANTE/DanteWarning.PNG" alt="" border="0" class="hcp2"></p>
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<ul type="disc">
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<li><p>The BLU-160 and BLU-120 will default to synchronise to BLU link
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at all times since they do not use CobraNet, AVB or DANTE.  The
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sample rate and sample rate pull-down is selected in <a href="Device Properties Pane.html">properties</a>
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for the device.  </p></li>
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<li><p>The BLU-100, BLU-101 and BLU-102 will also default to synchronise
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to BLU link.   The 48kHz sample rate and sample rate pull-down
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is selected in <a href="Device Properties Pane.html">properties</a>
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for the device.</p></li>
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<li><p>The same sample rate must be selected for every device in the
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design otherwise London Architect will not permit you to go online
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and will display a warning.</p></li>
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</ul>
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<p class="hcp1"><img src="SampleRateWarning.png" alt="" border="0" class="hcp2"></p>
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<ul type="disc">
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<li><p>The <a href="BLU-BIB_Break_In_Box_for_Blu_link.htm">BLU-BIB</a>
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and <a href="BLU-BOB.htm">BLU-BOB</a> will auto-switch and lock to
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whatever sample rate frequency is detected on their ports.  </p></li>
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</ul>
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<p style="margin-left: 40px; font-weight: bold; color: #000000;">IMPORTANT,
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PLEASE NOTE</p>
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<p style="margin-left: 40px; color: #000000; font-weight: normal;">BLU-BOBs and BLU-BIBs
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with version numbers below v1.05 are not compatible with BLU link pull-down
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sample rates.  <span lang="EN-US" xml:lang="EN-US" class="hcp5">If
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the design requires pull-down and you have a pre v1.05 BLU-BIB or
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BLU-BOB, please contact Customer Services at </span><span style="font-family: 'Franklin Gothic Medium', sans-serif;
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mso-fareast-font-family: Calibri;
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mso-fareast-theme-font: minor-latin;
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mso-bidi-font-family: 'Times New Roman';
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color: #17365D;
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mso-ansi-language: EN-GB;
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mso-fareast-language: EN-GB;
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mso-bidi-language: AR-SA;"><a
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href="mailto:bss.support@harman.com">bss.support@harman.com</a></span><span lang="EN-US" xml:lang="EN-US" class="hcp5">  for
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guidance.  BLU-BOBs and BLU-BIBs with a sticker on the rear panel showing
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V1.05 or above are compatible with pull-down rates.</span></p>
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<ul type="disc">
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<li><p style="margin-left: 0px;">Crown amplifiers with PIP-BLU cards
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fitted for BLU link audio transport are not currently supported for
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BLU link networks with 'Sync to BNC' configured.  LA will not
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go online with a design which includes a PIP BLU and a Soundweb London
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with 'Sync to BNC' configured</p></li>
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</ul>
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<p class="hcp6"> </p>
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<h3>Example: System designed to synchronise from the word clock at the
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BNC input.</h3>
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<p class="hcp7">The following example shows how to set
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up a system which is designed to synchronise to an external word clock
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which is running at the 48kHz pull-down sample rate of 47.952kHz.. </p>
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<p class="hcp7">System components:</p>
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<ul type="disc">
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<li><p class="hcp7">BLU-800 Sync to BNC </p></li>
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<li><p class="hcp7">BLU-800 Sync to BNC</p></li>
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<li><p class="hcp7">BLU-320 Sync to BLU link</p></li>
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<li><p class="hcp7">BLU-120, BLU-160, BLU-100, BLU-101,
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BLU102</p></li>
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</ul>
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<p class="hcp6"><img src="100_Panel.png002.bmp" alt="" border="0" class="hcp2"></p>
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<h4> </h4>
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<h4>U1  - this device will be the master of the BLU link ring</h4>
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In Properties,
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<ul type="disc">
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<li>Set the Sample Rate to 48kHz</li>
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<li>Select the Sample Rate Pull-down 47.952kHz</li>
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<li>Set BLU link Sync, to '<span class="hcp4">Sync to
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BNC</span>'</li>
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</ul>
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<p>On the Device Control Panel</p>
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<ul type="disc">
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<li>Set the Mastership Priority to be higher than that set for all
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other devices </li>
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</ul>
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<p> </p>
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<p class="hcp6">U2 - this device will take over as the master
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if there is an invalid BNC connection, or no BNC connected, to U1.  Otherwise
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it will sync to the BLU link ring</p>
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<p>In Properties,</p>
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<ul type="disc">
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<li>Set the Sample Rate to 48kHz</li>
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<li>Select the Sample Rate Pull-down 47.952kHz</li>
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<li>Set BLU link Sync, to '<span class="hcp4">Sync to
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BNC</span>'</li>
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</ul>
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<p>On the Device Control Panel</p>
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<ul type="disc">
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<li>Set the Mastership Priority to be lower than U1 but higher than
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that set for all other devices </li>
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</ul>
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<p> </p>
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<p class="hcp6"><span class="hcp4">U3 - this
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device will synchronise from the BLU link network where U1 is the master</span></p>
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<p>In Properties,</p>
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<ul type="disc">
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<li>Set the Sample Rate to 48kHz</li>
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<li>Select the Sample Rate Pull-down 47.952kHz</li>
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<li>Set BLU link Sync, to '<span class="hcp4">Sync to
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BLU link</span>'</li>
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</ul>
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<p>On the Device Control Panel</p>
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<ul type="disc">
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<li>Set the Mastership Priority to be lower than U1 and U2  </li>
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</ul>
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<p> </p>
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<p class="hcp6"><span class="hcp4">U4 and U5
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- these devices will synchronise from the BLU link bus where U1 is the
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master</span></p>
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<p>In Properties,</p>
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<ul type="disc">
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<li>Set the Sample Rate to 48kHz</li>
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<li>Select the Sample Rate Pull-down 47.952kHz</li>
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<li>Set BLU link Sync, to '<span class="hcp4">Sync to
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BLU link</span>'</li>
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</ul>
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<p>On the Device Control Panel</p>
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<ul type="disc">
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<li>Set the Mastership Priority to be lower than U1 and U2  </li>
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</ul>
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<p class="hcp6"> </p>
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<p class="hcp6">U7, U8 and U9 - these devices will synchronise
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from the BLU link bus where U1 is the master</p>
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<p>In Properties,</p>
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<ul type="disc">
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<li>Select the Sample Rate Pull-down 47.952kHz</li>
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<li>Set BLU link Sync, to '<span class="hcp4">Sync to
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BLU link</span>'</li>
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</ul>
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<p>On the Device Control Panel</p>
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<ul type="disc">
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<li>Set the Mastership Priority to be lower than U1 and U2  </li>
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</ul>
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</body>
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</html>
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