<div dir="ltr"><div><img src="cid:ii_md63ytaa1" alt="20250711_110655.jpg" width="765" height="470" style="margin-right: 0px;"></div><div><br></div><div class="gmail_default" style="font-size:small">This is a carrier board that mates a Jetson Orin Nano along with an advanced software-defined radio (SDR).</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">I&#39;m sure we&#39;ll see more of these in 4 years, but not yet.  Typically the things I work on don&#39;t exist anywhere else, and this is no exception.  This is the second of these boards that have ever been built and it does something very unique.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small"><img src="cid:ii_md641ixd2" alt="carrier.png" width="760" height="423" style="margin-right: 0px;"></div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">That&#39;s some of the layout in my CAD software.  Some of the signals on this board are so fast (10 gigbits per second) we have to calculate how long it&#39;ll take the electrons to go from one end of the board to the other and use that information to adjust the exact lengths of the signal traces, to within a few pico-seconds (i.e. trillionths of a second).  It takes about 165 pico-seconds per inch, depending on what material you use and what&#39;s above and below your signal traces.<br></div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">We don&#39;t start off with the rules that govern these things, there&#39;s nothing off the shelf here.  We have to do the research, do the math, then define the rules ourselves and make sure we stay within them and hope we didn&#39;t miss anything.</div><div class="gmail_default" style="font-size:small"><br></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><font face="courier new, monospace">Regards,</font></div><div><font face="courier new, monospace">Thomas Pownall</font></div><div><font face="courier new, monospace"><br></font></div><div><font face="courier new, monospace">CADX Services, Inc.</font></div><div><font face="courier new, monospace"><br></font></div><div><font face="courier new, monospace">Tel: 585-624-1491 X101</font></div><div><font face="courier new, monospace">Fax: 585-582-1101</font></div><div><font face="courier new, monospace">E-Mail: <a href="mailto:tpownall@cadxservices.com" target="_blank">tpownall@cadxservices.com</a></font></div><div><font face="courier new, monospace">Web: <a href="http://www.cadxservices.com" target="_blank">http://www.cadxservices.com</a></font></div><div><font face="courier new, monospace"><br></font></div><div><font face="courier new, monospace">***********************************************************</font></div><div><font face="courier new, monospace">**************** Confidentiality Statement ****************</font></div><div><font face="courier new, monospace">***********************************************************</font></div><div><font face="courier new, monospace"><br></font></div><div><font face="courier new, monospace">Privileged/Confidential Information may be contained in this</font></div><div><font face="courier new, monospace">message. If you are not the addressee indicated in this message</font></div><div><font face="courier new, monospace">(or responsible for delivery of the message to such person),</font></div><div><font face="courier new, monospace">you may not copy or deliver this message to anyone. In such</font></div><div><font face="courier new, monospace">case, you should destroy this message, and notify us</font></div><div><font face="courier new, monospace">immediately. If you or your employer does not consent to</font></div><div><font face="courier new, monospace">Internet email messages of this kind, please advise us</font></div><div><font face="courier new, monospace">immediately. Opinions, conclusions and other information</font></div><div><font face="courier new, monospace">expressed in this message are not given or endorsed by my firm</font></div><div><font face="courier new, monospace">or employer unless otherwise indicated by an authorized</font></div><div><font face="courier new, monospace">representative independent of this message.</font></div></div></div></div></div></div></div>