On Mon, Sep 26, 2005 at 02:56:18PM +0800, [EMAIL PROTECTED] wrote: > In the module interface, there are two RF data differential pairs > from > RF board to the USRP board: VINN_A, VINP_A; VINN_B, VINP_B. > If there are two individual RF tuners on the RX board, I think they each use > one different pair, like the picture below for basic RX board. > http://www-personal.engin.umich.edu/~anastas/gnuradio/usrp_gen.eps > But how about the TVRX board? From what I see from the python code, > only one ADC is used. Is one of the differential pairs left open > or both of them connect from the same RF tuner output? If the answer is 2), > under what condition would this be used (I/Q sampling) for this tuner?
IANAEE, but reading the schematics[1], it looks like only VINP_A/VINN_A are connected (to out+/out-). So I would say answer 1). [1] http://www.ettus.com/Download.html Now this makes me think, why the left unused pair VINN_B/VINP_B has not been used as an extra single basic RX on the TVRX board? Matt, Eric, can the TVRX still be moded? -- Stephane _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
