[hpsdr] ozy/janus as soundcard for digital modes

[Stephen West-Fisher]

No need to shout, and actually I thought I was quite clear in my response to
Phil that the TS-480 only has analog audio out and in. My understanding of
the HPSDR project is that it is for experimentation and learning, so I'm
doing both.

So you are saying that I/Q data can go into an analog audio input but an
analog audio output cannot go into an I/Q data port? Since I was able to
decode PSK-32 doing just that I'm not sure I completely agree. I do know the
panadapter display looks quite odd, and I have not done any comparison of
how well it works compared to just hooking up to a standard soundcard.
Performance may be quite marginal, but I did get a positive response.

So then, since Janus was designed as an A/D and D/A adapter (with the TI
TLV320AIC23B) and has non I/Q inputs and outputs so it appears to me the
hardware should be able to handle the appropriate audio to digital
conversion. If the hardware is capable, then the software would be the
problem and Phil's response to me leads to that conclusion (windows driver).
If there is a problem with this statement, please let me know where I'm
going wrong.

At this point the clue I am looking for is where the problem lies, Janus
firmware or PowerSDR code?

--
Stephen West-Fisher
N4IK


-----Original Message-----
From: hpsdr-bounces at lists.openhpsdr.org
[mailto:hpsdr-bounces at lists.openhpsdr.org] On Behalf Of george byrkit
Sent: Thursday, November 03, 2011 8:14 AM
To: hpsdr at lists.openhpsdr.org
Subject: Re: [hpsdr] ozy/janus as soundcard for digital modes

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

Dear Stephen,
The 'normal sound card' is used to receive I/Q data from the SDR-1000, which
is then processed by PowerSDR.

Janus has better resolution and more stable timing than most sound cards,
and the USB conntection thru Ozy has much less latency (delay) than a normal
sound card would.

So UNLESS YOUR TS480 OUTPUTS I/Q data (which you have not yet confirmed or
denied), PowerSDR WILL NOT WORK WITH IT.

73,
George K9TRV

_______________________________________________
HPSDR Discussion List
To post msg: hpsdr at openhpsdr.org
Subscription help:
http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org
HPSDR web page: http://openhpsdr.org
Archives: http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/


 1320326863.0