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Øyvind Skaaden
2020-08-16 15:32:44 +02:00
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_files/sound/bss/london/manual/MAIN/Third-party Control Troubleshooting.html Normal file
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
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<title>Third-party Control Troubleshooting</title>
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<h1 class="firstHeading">Third-party Control Troubleshooting</h1>
<div id="bodyContent">
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<td class="hcp1">&#160;</td>
<td class="hcp1">&#160;</td>
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<td bgcolor="#E0E0E0" class="hcp2"><p class="hcp3">Problem</p></td>
<td bgcolor="#E0E0E0" class="hcp2"><p class="hcp3">Solution</p></td>
</tr>
<tr>
<td class="hcp4"><p>Soundweb London devices
are sending updates once a second, regardless
of the subscription rate. Messages continue even
after unsubscribing.</p></td>
<td class="hcp4"><p>The device is waiting
for an <b>ACK</b> or <b>NAK</b> character in response
to messages.</p>
<p>Option 1: Set the &quot;Acknowledge (ACK)&quot;
property of the device in question to No. See
the Serial/RS-232 entry in the <a href="Third-party&#32;Control&#32;Protocol.html">Third-party
Control Protocol</a> section of the help for more
information.</p>
<p>Option 2: Respond to each message from the device
with <b>ACK</b> for valid messages and <b>NAK</b>
for invalid messages (i.e. messages whose checksum
failed).</p>
<p>This does not apply to TCP/IP control connections,
as they do not use the <b>ACK</b>/<b>NAK</b> mechanism.</p></td>
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