<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML xmlns:o = "urn:schemas-microsoft-com:office:office" xmlns:w =
"urn:schemas-microsoft-com:office:word" xmlns:st1 =
"urn:schemas-microsoft-com:office:smarttags"><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.2900.2802" name=GENERATOR></HEAD>
<BODY lang=EN-US vLink=purple link=blue bgColor=#ffffff>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=CTDay@lbl.gov href="mailto:CTDay@lbl.gov">Christopher T. Day</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=hpsdr@hpsdr.org
href="mailto:hpsdr@hpsdr.org">High Performance Software Defined Radio
Discussion List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, March 15, 2006 7:26
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [hpsdr] [OT] Shipping container
overload</DIV>
<DIV><BR></DIV>***** High Performance Software Defined Radio Discussion List
*****<BR><BR>
<P>
<HR>
<P></P>
<META content="Microsoft Word 11 (filtered medium)"
name=Generator><o:SmartTagType name="City"
namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagType><o:SmartTagType
name="place"
namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagType><!--[if !mso]>
<STYLE>st1\:* {
BEHAVIOR: url(#default#ieooui)
}
</STYLE>
<![endif]-->
<STYLE>
<!--
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman";}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:Arial;
color:windowtext;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.25in 1.0in 1.25in;}
div.Section1
{page:Section1;}
-->
</STYLE>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I’ve been musing on the idea that
nobody seems to be using the FX2 as anything but a mindless USB engine. I
personally would like to see it used to provide a USB interface that follows
the USB spec for Audio Devices. I presume I’ll have to do that myself, but
it’s slow going so far. Anyway, the idea arose in my head that the 16KB of
on-board RAM might not be enough. So, for potential future use, I asked
<st1:City w:st="on"><st1:place w:st="on">Cypress</st1:place></st1:City> for a
sample of the 128-pin version that allows off-chip RAM – strictly for my own
amusement at this point.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">So, to the point: when the sample
arrived, it was enclosed in the most elaborate shipping package I have seen so
far. The package is about 6.5” x 13” in a vacuum sealed aluminized bag with a
big sticker announcing that it contains a Level-3 Moisture Sensitive Device –
Do Not Open Except Under Controlled Conditions. The somewhat illegible text
goes on to say that the device should last a year if the bag is unopened and
kept below 260C, but if reflow soldered or other high temperature process is
used, it must be done within 168 hours of opening if the weather ain’t right
(not their words) or baked or a bunch of other stuff. It also includes the
interesting information that the chip lived free for 4 hour and 20 minutes
between manufacturing and package sealing.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">From my quick Googling, this all
seems to have been brought on by the Pb-free initiatives and consequent higher
soldering temperatures with worries that steam production could damage the
part. My question is:<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
If I use a soldering iron as we usually do, should I worry about all
this?<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P></DIV></BLOCKQUOTE>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p>I've never had any problems.
Reflow soldering is different, the whole package gets
heated.</o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p></o:p></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p>73,
Leon</o:p></SPAN></FONT></P><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p>
<DIV><FONT face=Arial size=2>--</FONT></DIV>
<DIV>Leon Heller, G1HSM<BR><A
href="mailto:leon.heller@bulldoghome.com">leon.heller@bulldoghome.com</A><BR><A
href="http://www.geocities.com/leon_heller">http://www.geocities.com/leon_heller</A></DIV></o:p></SPAN></FONT></BODY></HTML>