[USRP-users] difference between N210 and X310

Marcus Müller marcus.mueller at ettus.com
Fri Mar 11 04:19:51 EST 2016

Dear John,

does increasing gain help? What do "lower-level" tests say? Do you see
anything on a PSD display?

Best regards,

On 11.03.2016 09:15, john liu wrote:
> Hi,Marcus,
>      thank you for your reply.
>      We changed nothing besides for N210 to X310,so the sampling rate
> keep the same.We checked  antenna port carefully,it's right.We run the
> benchmark_rx/benchmark_tx on X310 with UBX,the test rezult is also OK.
>      Do you have any advice?
> best ergards
> John
> On Thu, Mar 10, 2016 at 1:39 AM, Marcus Müller
> <marcus.mueller at ettus.com <mailto:marcus.mueller at ettus.com>> wrote:
>     Though the CBX and the UBX are relatively different, I'd expect
>     ubx performance to be no worse than the performance of the CBX.
>     Have you tried adjusting gain settings? Are you still using the
>     same sampling rate? I tend to wrongly connect the front
>     connectors; are you sure you're using the right antenna port?
>     Best regards
>     Marcus
>     Am 9. März 2016 10:17:47 MEZ, schrieb john liu via USRP-users
>     <usrp-users at lists.ettus.com <mailto:usrp-users at lists.ettus.com>>:
>         Dear all,
>                    We run our program which is a LTE  downlink
>         program,developed base on gnuradio.We test it transmit and
>         receive on N210 with CBX,the rezult is OK,and the
>          constellation is clear ,and the error rate below 1%.But when
>         we change N210 to X310 with UBX160,and the others keep the
>         same,the  test rezult become so worse.The constellation is
>         no regular,and the error rate almost to 1.So, must we change
>         some setting when change N210 to X310?
>                    We run our program on ubunutu 14.04LTS,with UHD3.9.2.
>         best regards
>         John
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>     brevity.
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