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<DIV><FONT size=2 face=Arial>Hi Phil and Riho,</FONT></DIV>
<DIV><FONT size=2 face=Arial>Yes, Kiss seems to be better in handling the data
stream over Ethernet compared to the different PowerSDR programs. With Ozy I
experienced audio dropouts which are gone after installing Metis. Now the skin
of PowerSDR freezes temporarily and it takes several seconds before
it starts moving again, about the same time the PC needs to find Metis on
startup. This never happens when using the Kiss console and said
freezing may also relate to Phil´s numbering of the data frames,
sent in both directions. I tried all possible settings in PowerSDR but could not
find one that prevents occasional freezing. Using Kiss, I can set the process
priority in Windows Task Manager to "low" and no freezing occurs. Hope my
observations help to improve HPSDR-programs. </FONT></DIV>
<DIV><FONT size=2 face=Arial>vy 73 es gl de</FONT></DIV>
<DIV><FONT size=2 face=Arial>SM6OMH Willi</FONT></DIV>
<DIV><FONT size=2 face=Arial>MS XP 32. AMD Sempron 3400+, 1,81 GHz</FONT></DIV>
<DIV><FONT size=2 face=Arial>Atlas</FONT></DIV>
<DIV><FONT size=2 face=Arial>Metis v1.0 (installed recently)</FONT></DIV>
<DIV><FONT size=2 face=Arial>Mercury v2.9</FONT></DIV>
<DIV><FONT size=2 face=Arial>Penny v1.2 </FONT></DIV>
<DIV><FONT size=2 face=Arial>Kiss v1.0.4 Recent KD5TFD & W5WC PowerSDR
programs. </FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=es7aaz@gmail.com href="mailto:es7aaz@gmail.com">Riho B., ES7AAZ</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Cc:</B> <A title=hpsdr@lists.openhpsdr.org
href="mailto:hpsdr@lists.openhpsdr.org">hpsdr@lists.openhpsdr.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, October 01, 2011 12:24
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [hpsdr] about latency growth
with HPSDR</DIV>
<DIV><BR></DIV>***** High Performance Software Defined Radio Discussion List
*****<BR><BR>
<P>
<HR>
<P></P>Thanks Phil,<BR><BR>As I see I need to upgrade my hardware. I'm still
Ozy user since most<BR>of the time I'm running my HPSDR @ 48 kHz, there's no
need for<BR>higher sampling rates for me.<BR><BR><BR>Thanks again
!<BR><BR>73's<BR>Riho, ES7AAZ.<BR><BR><BR>1.10.2011 10:14, Phil Harman
kirjutas:
<BLOCKQUOTE cite=mid:F2A1811F5E2D4DD2B0B204DF710A7880@phil type="cite">
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<DIV><FONT size=2 face=Arial>Hi Riho,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>You may care to do some tests on you system
using KISS Konsole since I suspect you are dropping packets between the PC
and HPSDR hardware. If you are only losing the odd packet then you are
not going to hear them.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>The Metis Ethernet code has a packet
number included in each data frame both to and from the PC. KK will indicate
if a packet is lost and what the expected and received packet
numbers are. Similarly Metis will light a LED if it misses a
packet.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>Using KK with Metis at 192ksps I have never
seen a missed packet in either direction - in fact I had to deliberately
send incorrect packet numbers to check the code was working!</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>I'm also currently doing some work that
involves time stamping the data from Mercury via Metis - again no
dropped packets. </FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>The PC has absolutely no idea what the sample
rate is of the data it is being sent. It's not acceptable that an SDR can't
be used for DRM, SSTV etc - this needs to be investigated and
corrected.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>73 Phil...VK6APH </FONT></DIV></BLOCKQUOTE><BR>
<P>
<HR>
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