doing it now. is the LO frequency the carrier freq or is it 1/2 or 2x?
On Fri, Jan 14, 2022 at 5:03 PM Marcus D. Leech <patchvonbr...@gmail.com>
wrote:
> On 2022-01-14 17:00, Paul Atreides wrote:
> > That's what I had originally.
> > i've Changed back to this and still getting no LED on the TX LO OUT0:
> > RF0
> > LO Source internal
> > LO export True
> > RF1
> > LO Source external
> > LO export False
> >
> > the generated flowgraph code looks to be reflecting is:
> > self.uhd_usrp_sink_0.set_clock_source('external', 0)
> > self.uhd_usrp_sink_0.set_time_source('external', 0)
> > self.uhd_usrp_sink_0.set_samp_rate(samp_rate)
> > self.uhd_usrp_sink_0.set_time_unknown_pps(uhd.time_spec(0))
> >
> > self.uhd_usrp_sink_0.set_center_freq(freq, 0)
> > self.uhd_usrp_sink_0.set_antenna('TX/RX', 0)
> > self.uhd_usrp_sink_0.set_gain(gain_0, 0)
> >
> > self.uhd_usrp_sink_0.set_lo_source('internal', uhd.ALL_LOS, 0)
> > self.uhd_usrp_sink_0.set_lo_export_enabled(True, uhd.ALL_LOS, 0)
> > self.uhd_usrp_sink_0.set_center_freq(freq, 1)
> > self.uhd_usrp_sink_0.set_antenna('TX/RX', 1)
> > self.uhd_usrp_sink_0.set_gain(gain_1, 1)
> >
> > self.uhd_usrp_sink_0.set_lo_source('external', uhd.ALL_LOS, 1)
> > self.uhd_usrp_sink_0.set_lo_export_enabled(False, uhd.ALL_LOS, 1)
> >
>
> I wonder if this is just a case of the LO export LED code isn't there in
> that version of UHD?
>
> Can you confirm presence of the LO signal with a spectrum analyser or
> similar?
>
>
>
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