[Premium-Rx] Cubic CDR-3280 Digital I + Q output

[Paolo Mantovani]

Found this googling around. Maybe there is a similar one made by Cubic

www2.rohde-schwarz.com/file/EX-IQ_Box_K04_dat_sw_en.pdf

Regards
Paolo
IZ2RXS

On Tue, Jan 18, 2011 at 8:52 AM, Mack Rogers <n4vgb at yahoo.com> wrote:

> Indeed that is the problem. This data format isn't something that a
> soundcard would be able to process, since those process the I&Q on the L&R
> audio input channels. As far as I know any of the commonly available SDR
> programs could process the data, IF some way of inputting the data stream to
> a PC could be found.
>
> I've been like a dog chasing his own tail on this situation for about 4
> years now. I dunno what the gov uses this format of I&Q data stream for but
> it sure would be interesting to find out!
>
> To complicate the matter even further each active output on the J7
> connector has an inverted output also.
>
> Who knows, maybe one day I'll be scrounging in some surplus dealers junk at
> a hamfest and there will be a strange looking box with Cubic Communications
> on it that cures this problem for me.
>
> N4VGB
> Mack Rogers
>
>
>
> --- On Tue, 1/18/11, David I. Emery <die at dieconsulting.com> wrote:
>
> > From: David I. Emery <die at dieconsulting.com>
> > Subject: Re: [Premium-Rx] Cubic CDR-3280 Digital I + Q output
> > To: "Mack Rogers" <n4vgb at yahoo.com>
> > Cc: wombat5 at ntlworld.com, Premium-Rx at mailman.qth.net
> > Date: Tuesday, January 18, 2011, 1:06 AM
> > On Mon, Jan 17, 2011 at 09:59:38PM
> > -0800, Mack Rogers wrote:
> >
> >
> > > The serial data is framed in 32 bit words consisting
> > of 16-I and 16-Q
> > > bits. The pinout and signals are well defined in the
> > manual. Our problem
> > > is nobody seems to know how to deal with this data
> > format.
> >
> >     Virtually ANY SDR software expects such
> > data formats or similar
> > as its basic internal format for sample data, but obviously
> > to use the
> > data from this radio you both have to get it into the
> > computer in some
> > reasonably efficient fashion and provide software drivers
> > for the input
> > hardware that interfaces with the existing sound card
> > oriented code.
> >
> >
> > >
> > > But I have successfully used the SoftRock Lite IF kit
> > SDR piece to process the RF IF output in a PC. So I may not
> > be missing much by not being able to use the J7 data output.
> > But it would be nice to find out some day. LOL
> > >
> > > N4VGB
> > > Mack Rogers
> > >
> > >
> > >
> > >
> > >
> > > --- On Mon, 1/17/11, David I. Emery <die at dieconsulting.com>
> > wrote:
> > >
> > > > From: David I. Emery <die at dieconsulting.com>
> > > > Subject: Re: [Premium-Rx] Cubic CDR-3280 Digital
> > I + Q output
> > > > To: wombat5 at ntlworld.com
> > > > Cc: Premium-Rx at mailman.qth.net
> > > > Date: Monday, January 17, 2011, 11:43 PM
> > > > On Sun, Jan 16, 2011 at 10:51:56AM
> > > > -0000, wombat5 at ntlworld.com
> > > > wrote:
> > > >
> > > > > The output I am asking about is the digital
> > serial
> > > > output from the 15
> > > > > pin D connector J7.  From the connector
> > info in
> > > > the manual there is a
> > > > > serial data output, a clock, and a frame
> > sync. Looks
> > > > like it will remain
> > > > > a mystery!
> > > >
> > > >     You COULD look at these signals
> > > > with either a logic analyzer or
> > > > a DSO with relatively deep storage.... or
> > both.
> > > > Likely they  consists
> > > > of 8 or 16 or 24 bit word containing one I or Q
> > sample sent
> > > > bit
> > > > serially - or perhaps two words (I and Q) after
> > each frame
> > > > sync pulse.
> > > >
> > > >     Using this for anything would require
> > > > some hardware to take
> > > > the serial bits and clock them into some kind of
> > register
> > > > for access
> > > > by software on a processor (presumably a PC)...
> > > >
> > > >
> > > > --
> > > >   Dave Emery N1PRE/AE, die at dieconsulting.com
> > > > DIE Consulting, Weston, Mass 02493
> > > > "An empty zombie mind with a forlorn barely
> > readable
> > > > weatherbeaten
> > > > 'For Rent' sign still vainly flapping outside on
> > the weed
> > > > encrusted pole - in
> > > > celebration of what could have been, but wasn't
> > and is not
> > > > to be now either."
> > > >
> > > >
> > ______________________________________________________________
> > > > Premium-Rx mailing list
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> > > > Help Contact eMail:  paul at 8zo.com
> > > > Home Page:  http://www.premium-rx.org/
> > > >
> > >
> > >
> > >
> >
> > --
> >   Dave Emery N1PRE/AE, die at dieconsulting.com
> > DIE Consulting, Weston, Mass 02493
> > "An empty zombie mind with a forlorn barely readable
> > weatherbeaten
> > 'For Rent' sign still vainly flapping outside on the weed
> > encrusted pole - in
> > celebration of what could have been, but wasn't and is not
> > to be now either."
> >
> >
>
>
>
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