Thanks Josh - knowing what to look for helped - as does my using the right file =) Just confirmed operation by gently phase modulating my reference clock from a signal generator with a CW RF input - the sample phases follow as they should. R.
Josh Blum-3 wrote: > > >> The problem is this: the 'Ref Clock' switch in the 'UHD Single USRP >> Source' >> doesn't appear to function. Switching it to External does seem to do >> anything. The GRC code is the same no matter whether I set the ref clock >> to >> int or ext (I checked the python code with diff). >> > > Works for me, here is my diff when i switch the ref to External and > click generate: > >> io_type=uhd.io_type_t.COMPLEX_FLOAT32, >> num_channels=1, >> ) >> + _clk_cfg = uhd.clock_config_t() >> + _clk_cfg.ref_source = uhd.clock_config_t.REF_SMA >> + _clk_cfg.pps_source = uhd.clock_config_t.PPS_SMA >> + _clk_cfg.pps_polarity = uhd.clock_config_t.PPS_POS >> + self.uhd_single_usrp_source_0.set_clock_config(_clk_cfg); >> self.uhd_single_usrp_source_0.set_samp_rate(samp_rate) >> self.uhd_single_usrp_source_0.set_center_freq(rx_freq, 0) >> self.uhd_single_usrp_source_0.set_gain(0, 0) > > -Josh > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > -- View this message in context: http://old.nabble.com/USRP-N210-10MHz-reference-input-tp30564787p30564992.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
