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<DIV><FONT size=2 face=Arial>All,</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>I've updated the USB Protocol document in
</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2
face=Arial>svn://svn.openhpsdr.org/svn/repos_sdr_hpsdr/trunk/Documentation</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>latest is V1.35.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>This adds the facilty to 'time stamp' Mercury
I&Q data using the one pulse per second (1PPS) from a GPS
receiver. The 1PPS should be connected to the Atlas bus on A_13 and have a
maximum amplitude of 3v. </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>The 1PPS can be read in the LSBit of the microphone
data that is associated with the current I&Q sample.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>This feature defaults to OFF so no changes to
current PC software is required. </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Time stamping of data will be used by the Chirp
beacon/RADAR code that Hermann, DL3HVH, is developing and will be included in
the next release of Metis code.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>73 Phil...VK6APH </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
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