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<p class="MsoNormal"><span style="font-size:14.0pt">Hi Andrea & Ken,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt">Looking over the current AOS GB (1993), there is an Annex C entitled: “Procedures for Verifying CCSDS Encoder Implementations” consisting of:<o:p></o:p></span></p>
<ol style="margin-top:0in" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1"><span style="font-size:14.0pt">CVCDU R-S outer code, the VCDU Header Error Control code, and the Cyclic Redundancy Code (CRC) polynomial used to generate the VCDU Error Control field.<o:p></o:p></span></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1"><span style="font-size:14.0pt">A Reed-Solomon outer code is used to generate check symbols that are appended to a VCDU to form a CVCDU….followed by test vectors that one could use
to verify these codes in their implementations.<o:p></o:p></span></li></ol>
<p class="MsoNormal"><span style="font-size:14.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt">Question – Similar to the tack the SLP WG is taking in reviewing the TC GB (CCSDS 200-G-6), vintage 1987, would it make more sense to extract Annex C from the AOS GB and place that information into the TM
Sync & CC Green Book ?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt">So far, it appears to me that most if not the remainder of the AOS GB is out of date and not very useful to maintain as a green book anymore.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt">Greg<o:p></o:p></span></p>
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