glados.no/_files/sound/bss/london/manual/MAIN/MAINCobranet_Multiunicast.htm

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<h1 class="firstHeading">CobraNet Multi-unicast</h1>
<h2><span style="font-size: 14.0pt;">Overview</span></h2>
<p><font face="Arial" class="hcp1"><font color="#000000">CobraNet
bundles are capable of sending audio to up to four destinations each,
bandwidth-dependent.</font></font></p>
<p><font face="Arial" class="hcp1"><font color="#000000">Multi-unicast
is to be considered an advanced user feature and changing the max receivers
property from the default of 1 is to be used with caution. The limits
on how many bundles can be transmitter from a node are dependent on bandwidth
available on the network and DSP usage on the CM1 module. Every multi-unicast
configuration should be tested using real hardware before being deployed.</font></font></p>
<p><font face="Arial" class="hcp1"><font color="#000000"><span class="hcp2">Configuring the multi-unicast feature</span></font></font></p>
<p><font face="Arial" class="hcp1"><font color="#000000">A
setting in the properties grid of HiQnet London Architect, allows the
maximum receivers for a given transmit bundle to be set to between 1 and
4.</font></font></p>
<p><font face="Arial" class="hcp1"><font color="#000000">To
change this, open the configuration view of a BLU-80 or BLU-32 in the
design. Click on a transmit bundle and click the properties tab to show
the property sheet for the CobraNet transmit bundle.</font></font></p>
<p><font face="Arial" class="hcp1"><img src="MAIN00000106.gif" alt="MAIN00000106.gif" title="MAIN00000106.gif" width="300" height="330" border="0" class="hcp3"></font></p>
<p><font face="Arial" class="hcp1"><font color="#000000">The
default setting for a unicast bundle Maximum Receivers is 1, giving normal
unicast bundle behaviour of one transmitter to one receiver. The transmit
and receive bundle pair are coloured green under these circumstances.</font></font></p>
<p><font face="Arial" class="hcp1"><img src="MAIN00000107.gif" alt="MAIN00000107.gif" title="MAIN00000107.gif" width="182" height="120" border="0" class="hcp3"></font></p>
<p><font face="Arial" class="hcp1"><font color="#000000">Changing
this setting to 2, 3 or 4 will grant permission for additional receive
bundles to receive audio. When more than 1 receiving bundle is configured
with the same bundle number, the transmit bundle and associated receive
bundles change colour from green to purple.</font></font></p>
<p><font face="Arial" class="hcp1"><img src="MAIN00000108.gif" alt="MAIN00000108.gif" title="MAIN00000108.gif" width="184" height="120" border="0" class="hcp3"></font></p>
<p><font face="Arial" class="hcp1"><font color="#000000"><span class="hcp2">Monitoring and fault detection</span></font></font></p>
<p><font face="Arial" class="hcp1"><font color="#000000">A
state variable is provided which indicates the number of receivers that
have been configured to receive a bundle. Please note, this does not indicate
how many receivers are actually receiving the bundle, but how many have
requested it. The Maximum Receivers setting presides. To use this state
variable, drag it from the design tree to a control panel, and when online
it will reflect the number of receivers requesting this bundle.</font></font></p>
<p><font face="Arial" class="hcp1"><img src="MAIN00000109.gif" alt="MAIN00000109.gif" title="MAIN00000109.gif" width="321" height="638" border="0" class="hcp3"></font></p>
<p><font face="Arial" class="hcp1"><font color="#000000">Reset-able
dropout counters are provided on the bundle control panels. To ensure
uninterrupted audio, verify that these remain at zero under all operating
conditions of your network.</font></font></p>
<p><font face="Arial" class="hcp1"><img src="MAIN00000110.gif" alt="MAIN00000110.gif" title="MAIN00000110.gif" width="563" height="53" border="0" class="hcp3"></font></p>
<p><font face="Arial" class="hcp1"><font color="#000000"><span class="hcp2">Capabilities</span></font></font></p>
<p><font face="Arial" class="hcp1"><font color="#000000">The
figures quoted below are maximum bundle and channel counts found empirically,
however, we strongly recommend making full use of the dropout counters
on bundle control panels and the error lights on the default panel to
qualify your design.</font></font></p>
<table wrapperparagraphselector="P" style="margin-top: 14pt; border-collapse: separate;
border-collapse: separate;" cellspacing="2" width="75%" border="1">
<tr>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000"><span class="hcp2">Sample rate</span></font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000"><span class="hcp2">Latency</span></font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000"><span class="hcp2">Bit depth</span></font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000"><span class="hcp2">number of transmit bundles</span></font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000"><span class="hcp2">channels per bundle</span></font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">48k</font></font></p></td>
<td class="hcp4"><p class="hcp6"><font face="Arial" class="hcp1"><font color="#000000">5.333</font></font></p>
<ol>
<li class="hcp7"><p class="hcp5">&#160;</p></li>
</ol></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">16
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">13</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">8
channels</font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">20
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">11</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">8
channels</font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">24
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">10</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">7
channels</font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">2.666</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">16
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">12</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">8
channels</font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">20
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">10</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">8
channels</font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">24
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">8</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">7
channels</font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp6"><font face="Arial" class="hcp1"><font color="#000000">1.333</font></font></p>
<ol>
<li class="hcp7"><p class="hcp5">&#160;</p></li>
</ol></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">16
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">8</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">8
channels</font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">20
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">8</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">8
channels</font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">24
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">6</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">7
channels</font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">96k</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">5.333</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">16
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">14</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">4
channels</font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">20
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">11</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">4
channels</font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">24
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">12</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">3
channels</font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp6"><font face="Arial" class="hcp1"><font color="#000000">2.666</font></font></p>
<ol>
<li class="hcp7"><p class="hcp5">&#160;</p></li>
</ol></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">16
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">12</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">4
channels</font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">20
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">10</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">4
channels</font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">24
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">8</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">3
channels + 1x20 bit</font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">24
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">11</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">3
channels</font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp6"><font face="Arial" class="hcp1"><font color="#000000">1.333</font></font></p>
<ol>
<li class="hcp7"><p class="hcp5">&#160;</p></li>
</ol></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">16
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">8</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">4
channels</font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">20
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">7</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">4
channels</font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">24
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">6</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">3
channels + 1x20 bit</font></font></p></td>
</tr>
<tr>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5">&#160;</p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">24
bit</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">7</font></font></p></td>
<td class="hcp4"><p class="hcp5"><font face="Arial" class="hcp1"><font color="#000000">3
channels</font></font></p></td>
</tr>
</table>
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