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Many thanks, Phil.<br>
<br>
An assumption from my side - in the older systems, all the new
processing is done in Ozy, with Penelope being untouched. So
compatibility with Pene and Mercury is unchanged. Correct?<br>
<br>
73, Greg ZL3IX<br>
<br>
<br>
<div class="moz-cite-prefix">On 2014-06-10 12:01 a.m., Phil Harman
wrote:<br>
</div>
<blockquote cite="mid:56DDEF74C7FA4440A5A25D19D3BEE16C@ShackPC2"
type="cite">
<pre wrap="">***** High Performance Software Defined Radio Discussion List *****
</pre>
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<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR:
#000000">
<div>All,</div>
<div> </div>
<div>There is new FPGA code available for a number of
openHPSDR based boards. The new releases are: </div>
<div> </div>
<div>Ozy_Janus_v2.7<br>
Metis_v2.9<br>
Hermes_v2.8<br>
Angelia_v3.5<br>
Orion_v2.4</div>
<div> </div>
<div>The Ozy_Janus code will automatically be included in the
next release of PowerSDR which will occur shortly.</div>
<div> </div>
<div>The Metis and Hermes code can be obtained from here:</div>
<div> </div>
<div><a moz-do-not-send="true"
title="http://openhpsdr.org/download.php"
href="http://openhpsdr.org/download.php">http://openhpsdr.org/download.php</a></div>
<div> </div>
<div>Joe, K5SO, will announce the availability of Angelia and
Orion code shortly.</div>
<div> </div>
<div>This new code moves all CW RF, Sidetone and Keyer logic
into the FPGA in order to eliminate any delays from a CW key
press to Sidetone generation. It also immediately applies
the selected level of receiver input attenuation, when
transmitting, to eliminate momentary ADC Overload warnings.</div>
<div> </div>
<div>Since CW RF generation is implemented in the FPGA then,
apart for user selectable delays on key closure and release,
RF generation is instantaneous.</div>
<div> </div>
<div>In the accompanying new release of PowerSDR there are two
user adjustable delays associated with the new CW code.
These are located on the Setup Form under General >
Options CW Delay and are:</div>
<div> </div>
<div>Key-Up – This setting delays the removal of PTT following
the end of a CW character.</div>
<div> </div>
<div>Key-Down – This setting delays the generation of RF
following the closure of the CW key. </div>
<div> </div>
<div>Both these settings are intended to enable the user to
prevent ‘hot switching’ of PA and Linear Amplifier etc.
relays.</div>
<div> </div>
<div>Note that the Key-Down delay is added to the length of a
CW character in order to prevent shortening of the the first
character sent. This value will need to be reduced from the
default 20mS when very high CW speeds are used i.e. above 50
WPM.</div>
<div> </div>
<div>If you are using subsequent amplifiers etc. that switch
very fast e.g. PIN diodes, then you can safely reduce these
settings to a few mS. The default values should be
suitable for most systems unless you have a very slow relay
in the chain.</div>
<div> </div>
<div>All the features of the Iambic CW Keyer previously
included in PowerSDR have been incorporated plus ‘Semi Bug’
were dashes are sent manually and dots automatically. All
the features of the CWX keyboard-to-CW code in PowerSDR
are still available.</div>
<div> </div>
<div>Removal of all CW generation from PowerSDR has been a
very large project involving numerous modifications to
PowerSDR and all previously developed FPGA code. However,
not only do these changes remove all latency on transmit
they also greatly simplify the inclusion of CW for those
writing PC code for openHPSDR based boards.</div>
<div> </div>
<div>My thanks go to Doug, W5WC, Joe, K5SO and Warren, NR0V,
for all the effort they have put in to produce such a high
quality result. I would also like to thank the members of
the Beta test team for their assistance and in particular
Vasiliy, Norbet and Tom, DF2LF, for the outstanding quality
of their feedback whilst chasing some very taxing bugs.</div>
<div> </div>
<div>Please note that you MUST use the new version of
PowerSDR, which will be released shortly, with the new FPGA
code since the new features are not supported by previous
releases. </div>
<div> </div>
<div>73 Phil...VK6PH </div>
<div> </div>
<div> </div>
<div> </div>
<div> </div>
<div> </div>
<div> </div>
</div>
</div>
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