[hpsdr] Problem: PowerSDR glitch, or very very short interuption of receiver output

[Tokio Endo]

Hello Joe,

Thank you very much for your advice.
I changed the version of Mercury from 60 to 29(29a).

In additon I changed slots of each board. So far I used to put Ozy at the
farthest slot from power connector, then Penny toward the power connector. I
put Mercury, not on the adjacent slot to Penny, but after one vacnat slot:
Ozy, Penny, vacant slot, Mercury. This time, the order is the following:
Vacant slot, Ozy, Penny, vacant slot, then Mercury, though I read befor a
mail indicating the order of slots is not important.

Now sporadic short interruption of audio disappeared even with 192000 on my
ATOM330. It's fine.

I hope the new Metis with Ethernet conncetion to PC would improve
dramatically the data transfer between PC and HPSDR board.

Thank you again for your help.

Tokio Endo
ja1cca

-----Original Message-----
From: hpsdr-bounces at lists.openhpsdr.org
[mailto:hpsdr-bounces at lists.openhpsdr.org]On Behalf Of Joe Martin K5SO
Sent: Saturday, October 23, 2010 10:01 AM
To: hpsdr at lists.openhpsdr.org
Subject: Re: [hpsdr] Problem: PowerSDR glitch,or very very short interuption
of receiver output


***** High Performance Software Defined Radio Discussion List *****

Hello Tokio,

Mercury 60 was a test version of the Mercury FPGA code used with dual
Mercury boards.  If you are running dual Mercury boards (even though
PowerSDR KD5TFD6Sep2010 is for a single Mercury board) I would load
Mercury v3.0 into both boards.

If you are running a single Mercury board I would recommend using
Mercury v2.9a instead.

In fact, to check whether the dual IQ streams of Mercury v3.0 (or the
test version 60) is contributing to your problem I would recommend
loading Mercury v2.9a into a single Mercury board and then running it
with the PowerSDR KD5TFD6Sep2010 to see if your problem disappears.

Also, see if the problem changes any if you change the audio sampling
rate (192000, 96000, or 48000) to a lower rate if you are running
higher than 48000.

Please let us know the results of your tests.

73,  Joe K5SO


On Oct 22, 2010, at 6:33 PM, Tokio Endo wrote:

> ***** High Performance Software Defined Radio Discussion List *****
>
> Hello All,
>
> Recently I have noticed the above phenomenon when I receive using
> PowerSDR
> KD5TFD6Sep2010.
> Very very short interuption of receiver output. Glitch, spike, I don't
> express it exactly in English word.
>
> This is unchanged remain when PC changed. Currently I use ATOM330,
> another
> PC is Pens 3.4G.
>
> I couldn't realise when this begun to happen. Does somebody
> recognize this
> problem?
>
> Versions are as follows;
> Ozy FX2: 20090524
> Ozy 17:
> Mercury 60:
> Penelope 12:
>
> Tokio Endo
> JA1CCA
>
>
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