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<?xml-stylesheet type="text/xsl" href="https://devzone.nordicsemi.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>nRF52840 AABB DTM problem</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/29410/nrf52840-aabb-dtm-problem</link><description>Hi All! 
 we are trying to tune Antenna use DTM over UART from examples. 
 It is works fine for AAAA IC but doesnot for AABB IC. 
 Why, what&amp;#39;s possible problem? 
 thx!</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Fri, 12 Jan 2018 15:10:42 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/29410/nrf52840-aabb-dtm-problem" /><item><title>RE: nRF52840 AABB DTM problem</title><link>https://devzone.nordicsemi.com/thread/116970?ContentTypeID=1</link><pubDate>Fri, 12 Jan 2018 15:10:42 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:0fa7ea81-1f9f-49fd-b57b-aa77d85f9e56</guid><dc:creator>endnode</dc:creator><description>&lt;p&gt;Also note that &lt;a href="https://devzone.nordicsemi.com/question/187158/nrf52840-ic-marking-question/?answer=187201#post-id-187201"&gt;there are changes in HW design for nRF52840_AABB&lt;/a&gt; so your HW might be simply bad.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: nRF52840 AABB DTM problem</title><link>https://devzone.nordicsemi.com/thread/116971?ContentTypeID=1</link><pubDate>Fri, 12 Jan 2018 13:11:37 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:6357bf5e-4d6a-4e41-91d1-ada91ead636c</guid><dc:creator>RK</dc:creator><description>&lt;p&gt;so this is a non-question. You have actually provided no details. You haven&amp;#39;t said how you&amp;#39;re trying to tune the antenna, you haven&amp;#39;t said what &amp;#39;works&amp;#39; means nor what &amp;#39;doesn&amp;#39;t work&amp;#39; means. You&amp;#39;ve posted no code you&amp;#39;ve actually given no details beyond &amp;quot;i&amp;#39;m trying to do something and it doesn&amp;#39;t work&amp;quot;.&lt;/p&gt;
&lt;p&gt;Please go back to the drawing board and post a proper question which has enough detail .. some detail at all, which might allow someone to even start guessing where you&amp;#39;ve gone wrong.&lt;/p&gt;
&lt;p&gt;I suspect this  has nothing at all to do with antenna tuning but is all about running code on different variations of the chip and not linking it to correctly find the RAM but your question is so vague and lazy it&amp;#39;s not even worth pointing you to the 500 times that&amp;#39;s been discussed on the forums.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>