Thank you Josh, Appreciate if you through a light on "the instructions for using the external clock for the usrp board"
Thanks & Regds, Sudhir. On Tue, Mar 30, 2010 at 9:38 AM, Josh Blum <j...@joshknows.com> wrote: > > > On 03/29/2010 08:11 PM, S'dir wrote: > >> Hi, >> >> Greetings. >> >> I have an USRP Rev-4.5 board, which contains two daughter boards, Basic TX >> and BasicRX. According to the TX and RX Daughterboards data sheet, the TX >> daughter board is capable of generating up to 1 MHz to 250 MHz signal. >> >> I am unable to generate transmit signal more than 44MHz using the >> usrp_siggen.py program which comes with the Gnu Radio software development >> kit to generate the Transmit signal. >> > > The DAC rate is 128 Msps. Technically, you cannot have frequencies above > the nyquist rate of 64 MHz. The basic tx relies on aliasing to get anything > above that rate. Take a look on a spectrum analyzer when transmitting, you > should see the signal and its aliases. -Josh > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio >
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