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<small>Attached to this e-mail are the XML Schema for delay models and
an XML document that contains example of delay models for the WIDAR
correlator. A shorter version of the XML document is shown below. <br>
<br>
An example was created by hand to illustrate the format, content and
size of the message. <br>
Each model in the example specifies two derivatives (coefficients);
user may choose to specify more (or less). <br>
<br>
In the WIDAR correlator, one Station Board can have up to two
basebands, each baseband can have up to 18 subbands. When subband delay
tracking is required, user may specify up to 38 (2 + 36) delay models
per board. All delay models for the same Station Board that have the
same epoch may be grouped in one XML element (and transmitted in a
single message). </small><br>
<br>
<small><!--<br>
An example of the proposed Delay Model for the WIDAR correlator.
<br>
Delay models for the Station Board 2-0-4 which has two basebands;
one subband for each baseband.<br>
--><br>
<vciDelayModel xmlns:xsi=<a class="moz-txt-link-rfc2396E" href="http://www.w3.org/2001/XMLSchema-instance"><font color="red"><b>MailScanner has detected a possible fraud attempt from "www.w3.org" claiming to be</b></font> "http://www.w3.org/2001/XMLSchema-instance"</a>
xsi:noNamespaceSchemaLocation="vciDelayModel.xsd"
timeStamp="2008-12-17T09:30:46" ><br>
<vciStbDelayModel epoch="2008-12-17T09:30:47.000" ><br>
<boardId rack="2" crate="0" slot="4" /><br>
<bbDelayModel numDeriv="2"
bbId="0">0123456789abcdef0123456789abcdef</bbDelayModel><br>
<bbDelayModel numDeriv="2"
bbId="1">0123456789abcdef0123456789abcdef</bbDelayModel><br>
<sbDelayModel numDeriv="2" bbId="0"
sbId="0">0123456789abcdef0123456789abcdef</sbDelayModel><br>
<sbDelayModel numDeriv="2" bbId="1"
sbId="0">0123456789abcdef0123456789abcdef</sbDelayModel><br>
</vciStbDelayModel><br>
</vciDelayModel><br>
<br>
</small>
<pre class="moz-signature" cols="80">Question: In order to make the message shorter, it would be nice to avoid repetition and specify the number od derivatives (numDeriv) per board (in the same way as epoch). May I assume that, most of the time, the number of derivatives (coefficients of the polynomial) will be the same for all the basebands and subbands on a Station Board. When that is not the case, user would have to generate more than one element vciStbDelayModel per board.
All comments and suggestions will be appreciated,
Sonja
</pre>
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