[hpsdr] Ozy and the new code release

[Steve Bunch]

(Already reported to Kirk, re-sent to the list, in case others want to  
look for this same symptom.  You may not notice this unless you're  
listening to static while watching D1 :-).

D1 is usually off, but I see a code 0000 flashed immediately after a  
gap in the audio and a corresponding waterfall smear when watching  
background noise on 10M. It is sometimes minutes between occurrences  
of this sequence, sometimes they're back to back within seconds of  
each other.  It also flashes code 0000 occasionally when listening to  
contest traffic on 6m, but the small gap in sound is not usually  
noticeable then - I would have missed it if I wasn't watching D1.   
This brief audio gap is exactly what I've been hearing with all past  
releases.  It looks like you're homing in on it!

My Ozy uses a C8.  Ozy, Mercury, Penelope, in J1, J2, J3,  
respectively.  Running latest releases of everything.  PowerSDR tuned  
to 10M, 192K/1024 audio sampling.  I have never had the serious  
problems others have reported.  I have not noticed any distortion of  
received audio under any conditions I've tried with the latest  
firmware and software.  Have not transmitted since updating Penny, so  
I have no data to provide on transmitted audio quality.

73,
Steve, K9SRB

On Jun 14, 2009, at 1:38 PM, Kirk Weedman wrote:

> ***** High Performance Software Defined Radio Discussion List *****
>
>
> I would like to gather some information on the new FPGA code  
> release.  LED D1 flashes a code under certain conditions.  If D1 is  
> flashing please send me the code which I will explain below, which  
> version of FPGA (C8 or C7), which boards are installed, and whether  
> you have any audio or other problems.  This may help me determine  
> some issues in the design.  I would like this info from people that  
> ARE having problems and people that ARE NOT apparently having  
> problems.
>
> Code:  D1 flashes a 4 bit value.  Least significant bit is flashed  
> first
>
> Here's what a value of 0 looks like
>           +---+           +---+           +---+           +---+
> D1 ---------+   +-----------+   +-----------+   +-----------+    
> +-----------+------------------------
>               0 (LSB)             0               0                
> 0         dead time between 4 bit flashes
> Here's what a value of 4 looks like
>
>           +---+           +---+           +----------+    +---+
> D1 ---------+   +-----------+   +-----------+          +----+    
> +-----------+---------------------
>               0                  0                1               0
>
> More details can be seen near the bottom of the ozy_janus.v code if  
> interested.
>
> Thanks
> Kirk KD7IRS
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