[hpsdr] More Janus results

[Philip Covington]

On 7/6/06, Phil Harman <pvharman at arach.net.au> wrote:
> ***** High Performance Software Defined Radio Discussion List *****

> I've now completed testing the prototype Janus board at both 96k and 192k
> and the results are very good.
>
> This image is at 96kHz  (Janus 96.jpg)
>
> http://www.hamsdr.com/personaldirectory.aspx?id=351
>
> and this at 192kHz (Janus 192k.jpg)
>
> http://www.hamsdr.com/personaldirectory.aspx?id=352
>
> What is really pleasing is at 192k there is no sign of the 48k clock feeding
> the TLV320 Codec which was a problem with my breadboard. The total lack of
> spurs is a credit to Lyle's PCB layout skills!
>
> By using the automatic calibration function on the AK5394A chip I've also
> been able to reduce the DC offset by a futher 10dB.
>
> All the other Janus board functions check out OK so looks like we have a
> 100% functional Alpha PCB.
>
> 73's Phil...VK6APH

Hi Phil,

Looks great!  Congrats...!

Here is a link to the two photos for people who are having trouble
with the file extensions:

<http://www.philcovington.com/HPSDR/JANUS/>

73 de Phil N8VB

 1152194893.0