Here PDF&#39;s<div><br clear="all">Best regards,<div>Andrey Sviyazov.</div><br>
<br><br><div class="gmail_quote">2012/5/29 Andrey Sviyazov <span dir="ltr">&lt;<a href="mailto:andreysviyaz@gmail.com" target="_blank">andreysviyaz@gmail.com</a>&gt;</span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Here PCB file of project.<div><br clear="all">Best regards,<div>Andrey Sviyazov.</div><div><div class="h5"><br>
<br><br><div class="gmail_quote">2012/5/29 Andrey Sviyazov <span dir="ltr">&lt;<a href="mailto:andreysviyaz@gmail.com" target="_blank">andreysviyaz@gmail.com</a>&gt;</span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

Hi all.<div><br></div><div>First release of UmTRXv1b seems finished.š</div><div>All suggestions and issues are welcomed, especially prior to production (few days).š</div><div>There are 4 Rx inputs to implement either scan function or software diversity receiving.</div>


<div>There are 16pin connector to supply and control external preselector, amplifier, LNA, ATT, diversity switch...</div><div><div>This new release have 2U size (100x160mm) that more universal for indoor housing to put together several UmTRX&#39;s with PC and power supply modules in one rack.š</div>


<div>Also possible variant to meet to requirements -40C and it is the only one reason to keep OCVCXO onboard.š</div><div>Also possible variant with external control panel to make easily IP65 housing design.š</div><div>Also DC supply voltage can be in range 8..28V to keep single DC supply if UmTRX will combined with IP65 tower mounted amplifiers.</div>


<br></div><div>And so on depend of your fantasy :)</div><div><br></div><div><div>Here includedšsomešproject files and BOM for variant with 20dBm Tx and onboard control.š</div><div>PCB and PDF files will be in the next two e-mails.š</div>


<br>Best regards,<div>Andrey Sviyazov.</div><div><div><br>
<br><br><div class="gmail_quote">2012/5/21 Alexander Chemeris <span dir="ltr">&lt;<a href="mailto:alexander.chemeris@gmail.com" target="_blank">alexander.chemeris@gmail.com</a>&gt;</span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">


Andrey,<br>
<div><br>
On Sun, May 20, 2012 at 6:46 PM, Andrey Sviyazov &lt;<a href="mailto:andreysviyaz@gmail.com" target="_blank">andreysviyaz@gmail.com</a>&gt; wrote:<br>
&gt; 1) Is it used somewhere? In the datasheet there is probable errors, for<br>
&gt; example, 1PPS is specified as input.<br>
<br>
</div>Use this datasheet, here it&#39;s marked as output:<br>
<a href="http://www.transystem.com.tw/product/66/EB-570%20Data%20Sheet%20V1.4.pdf" target="_blank">http://www.transystem.com.tw/product/66/EB-570%20Data%20Sheet%20V1.4.pdf</a><br>
Probably you have an older version of the datasheet.<br>
<div><br>
&gt; 2) There are inputs Reset and Standby. The first can be left open, and the<br>
&gt; second is possible need to be connected to to FPGA.<br>
<br>
</div>Yes.<br>
<div><br>
&gt; 3) There Is RTC_CLK_O we don&#39;t need him? And that there may be, 32768?<br>
<br>
</div>Could you route it to a test-point or a 2-pin IDC? I don&#39;t think we<br>
need this, but it&#39;s better to have an ability to access it.<br>
<div><br>
&gt; 4) Which of two UART&#39;s better to use or are they equivalent? There are no<br>
&gt; any words in datasheet about it.<br>
<br>
</div>Use TX0/RX0 (pins 13/14), which is default to NMEA - see the datasheet above.<br>
<div><br>
&gt; 5) Unfortunately no place for both on PCB and we can use either EB-230 or<br>
&gt; EB-570.<br>
<br>
</div>Then we have to use EB-570.<br>
<span><font color="#888888"><br>
<br>
--<br>
Regards,<br>
Alexander Chemeris.<br>
CEO, Fairwaves LLC / ïïï õÍòÁÄÉÏ<br>
<a href="http://fairwaves.ru" target="_blank">http://fairwaves.ru</a><br>
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