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Re: [Discuss-gnuradio] TX_RX board installation problem (0x000c)?

From: Eric Blossom
Subject: Re: [Discuss-gnuradio] TX_RX board installation problem (0x000c)?
Date: Mon, 9 Jan 2006 04:47:28 -0800
User-agent: Mutt/1.5.6i

On Sun, Jan 08, 2006 at 08:53:58PM -0800, Matt Ettus wrote:
> address@hidden wrote:
> > If the IF frequency is 43.75Mhz instead of 5.75Mhz, it is impossible that
> > AD9862 can be faster enough to do Nyquist sampling (64MSPs for 
> > AD9862). If that is so, how can AD9862 sample the intended signal ?
> > using bandpass sampling? Matt, can you explain it a little bit more ?
> Yes, bandpass sampling.  43.75 MHz appears at 20.25 MHz.
> Matt

FYI, all this magic occurs automatically, as long as you use the
u.tune(...) technique illustrated in usrp_wfm_rcv_nogui.py et al.

There's a reason we abstracted all the daughterboard handling code ;)


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