Hi I just tried your suggestion and it was ok for the RX side, but in the
Tx side the decimation wont go up to 1024, it only decimates up to 512,
-- Asking for clock rate 16.384 MHz
-- Actually got clock rate 16.384 MHz
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
UHD Warning:
The hardware does not support the requested TX sample rate:
Target sample rate: 0.016000 MSps
Actual sample rate: 0.032000 MSps
so is this locked for security or something, or the hardware simple doesn't
have the capabilities?
2016-04-07 5:33 GMT+00:00 Martin Braun <[email protected]>:
> On 04/06/2016 10:26 PM, Martin Braun wrote:
> > On the release 4 image, you can't do that. But you can set the clock to
> > 16 MHz and use a decimation of 1000. Or you can use a clock rate of
> > 16384e3 and a decimation of 1024, for a better decimation filter
> response.
>
> ...they'll probably be about the same, as the same number of halfbands
> will be active. But the point is, you can't go below 10 MHz MCR on
> release 4, and not above decimation 1024.
>
> Cheers,
> M
> >
> > Cheers,
> > Martin
> >
> > On 04/06/2016 06:11 PM, Gabriel Pechiarovich wrote:
> >> Hi, thanks for your answeri wasn't able to answer earlier.
> >>
> >> I was aiming to a 8MHz clock rate in order to use the DDC and get a
> >> 16000 sample rate.
> >> So i think i was misunderstood.
> >>
> >> Thank you very much
> >> Gabriel
> >>
> >>
> >> 2016-03-31 13:25 GMT-05:00 Martin Braun <[email protected]
> >> <mailto:[email protected]>>:
> >>
> >> On the release 4 image, you can't set the clock speed under 10 MHz.
> >> However, you can use a DDC (which is built in and automatically
> used).
> >> Simply set the clock rate to 32 MHz (or 16 MHz if this is MIMO) and
> the
> >> sample rate to 8 MHz.
> >>
> >> Cheers,
> >> Martin
> >>
> >> On 03/30/2016 05:02 PM, Gabriel Pechiarovich wrote:
> >> > Hi all,
> >> > I've developed a flowgraph wich includes a qpsk modulator and and
> >> audio
> >> > encoder, I used to run it in the E310 using the first release
> >> > (http://files.ettus.com/e3xx_images/e3xx-release-001/) and now
> >> trying to
> >> > use the release 4.
> >> >
> >> > The problem is:
> >> > in the UHD sink and source the clock rate was set to 8e6 Hz, and
> it
> >> > worked fine, in the release 1, but in the relese 4 the Clock rate
> wont
> >> > go lower than 10e6 Hz, so i cant archive the same results.
> >> >
> >> > Any idea how to force the use of 8MHz as the clock rate using the
> >> release4
> >> >
> >> > Thank you very much
> >> > Gabriel Pechiarovich Salas
> >> >
> >> >
> >> >
> >> > _______________________________________________
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> >> > [email protected] <mailto:[email protected]>
> >> > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> >> >
> >>
> >>
> >> _______________________________________________
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> >>
> >>
> >>
> >>
> >> --
> >> Gabriel Pechiarovich Salas
> >> Red Dragon Games
> >> Designers and game developers
> >
>
>
> _______________________________________________
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>
--
Gabriel Pechiarovich Salas
Red Dragon Games
Designers and game developers
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