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<tt>Hello Jacques,<br>
<br>
Here are some measurements of current drawn from the +5 volt
supply:<br>
metis 441 mA (at 100MHz ethernet, significantly higher at
1 Gb)<br>
mercury 933 mA (will be significantly higher when multiple
receivers are being used)<br>
penelope 182 mA<br>
excalibur 2 mA<br>
<br>
</tt><tt>from the +12v supply:<br>
</tt><tt>penelope will probably draw at least 100 mA <br>
pennylane maybe twice that much?<br>
excalibur 40 mA<br>
</tt><br>
I do not have either of the Alex boards, so I cannot measure their
current draw.<br>
<br>
I have only +5v and +12v supplies.<br>
<br>
II do not provide -12v, -5v, or +3.3v to Atlas. For my setup (and
yours) they are not needed.<br>
<br>
73,<br>
Dave<br>
WA8YWQ<br>
<br>
On 8/1/2012 2:34 AM, <a class="moz-txt-link-abbreviated" href="mailto:f6bki@orange.fr">f6bki@orange.fr</a> wrote:
<blockquote cite="mid:85B0DF8B04874C269E7A0D8989B76AFD@ASUS"
type="cite">
<pre wrap="">***** High Performance Software Defined Radio Discussion List *****
</pre>
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<div style="FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE:
12pt">
<div>Hello All, just received my TAPR modules : Mercury,Alex
filters, ,Metis, Pennylane, Excalibur, now looking at a
power supply .</div>
<div>on the Atlas doc it looks like I need
+12v,-12v,+5v,-5v,3.3v , looking at the HPSDR LPU doc it is
mentionned that that 3.3v is not needed for most cards ???</div>
<div>Is there a document adressing the needed DC voltage by
module ? </div>
<div>Thank you</div>
<div>73</div>
<div>Jacques F6BKI</div>
</div>
</div>
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<pre class="moz-signature" cols="72">--
Clear Stream Technologies</pre>
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