You can do this, as long as you have 2 separate streamers. The master clock rate will be the same on both, so you can only have different decimations/interpolations. For example, you could have 10 Msps on one and 20 Msps on the other if your MCR is 200 MHz (which is the default).
-- M On 09/07/2018 04:03 PM, Marcus D. Leech via USRP-users wrote: > On 09/07/2018 07:01 PM, Serge Malo wrote: >> Thanks for you quick answer Marcus: >> >> I always thought it was impossible to create 2 multi_usrp objects >> which connects to the same X300 device. Is this really possible? >> I can try that on my side later if you think its possible. >> >> >> Best regards, >> Serge > I would say try it. But now that you mention it, it may not work. I'm > not at my lab right now, or I'd try it myself.... > > >> >> >> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - >> - - - - - - - - - - - - - - - - >> *Meet us at ION GNSS+ 2018 in Miami! Sept 24-28 2018, booth 604.* >> *Serge Malo * >> CDO & Co-founder, Skydel Solutions >> Cell: 1-514-294-4017 >> www.skydelsolutions.com <http://www.skydelsolutions.com/> >> Twitter: @skydelsol <https://twitter.com/skydelsol> >> Avis : Ce message est confidentiel et protégé par le secret >> professionnel. Si vous n'êtes pas le destinataire, veuillez informer >> l'expéditeur par courriel immédiatement et effacer ce message et en >> détruire toute copie. / Notice: This message is confidential and >> privileged. If you are not the addressee, please inform the sender by >> return e-mail immediately and delete this message and destroy all copies. >> >> On 7 September 2018 at 16:35, Marcus D. Leech via USRP-users >> <usrp-users@lists.ettus.com <mailto:usrp-users@lists.ettus.com>> wrote: >> >> On 09/07/2018 04:32 PM, Serge Malo via USRP-users wrote: >>> Hi all, >>> >>> I'm trying to use 2 different sampling rates the 2 TX channels of >>> a X300. >>> Basically, I create 2 different tx_streamers, and call >>> usrp->set_tx_rate() for each channel. >>> >>> I'm getting this error from UHD: >>> Multiple sampling rates downstream of TX Terminator 0: >>> RuntimeError: Node 0/DUC_0 specifies 1.25e+07, node 0/DUC_1 >>> specifies 2.5e+07. >>> >>> >>> I'm using UHD 3.10.3.0. >>> Can you tell me if this is expected, or should I be able to use 2 >>> different sampling rates? >>> >>> Thanks, >>> Serge >> If you want different sample rates, you'll likely need to create >> two independent multi_usrp objects to contain the streamers. >> >> >>> >>> >>> >>> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - >>> - - - - - - - - - - - - - - - - - >>> *Meet us at ION GNSS+ 2018 in Miami! Sept 24-28 2018, booth 604.* >>> *Serge Malo * >>> CDO & Co-founder, Skydel Solutions >>> Cell: 1-514-294-4017 >>> www.skydelsolutions.com <http://www.skydelsolutions.com/> >>> Twitter: @skydelsol <https://twitter.com/skydelsol> >>> Avis : Ce message est confidentiel et protégé par le secret >>> professionnel. Si vous n'êtes pas le destinataire, veuillez >>> informer l'expéditeur par courriel immédiatement et effacer ce >>> message et en détruire toute copie. / Notice: This message is >>> confidential and privileged. If you are not the addressee, please >>> inform the sender by return e-mail immediately and delete this >>> message and destroy all copies. >>> >>> >>> _______________________________________________ >>> USRP-users mailing list >>> USRP-users@lists.ettus.com <mailto:USRP-users@lists.ettus.com> >>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >>> <http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com> >> >> >> _______________________________________________ >> USRP-users mailing list >> USRP-users@lists.ettus.com <mailto:USRP-users@lists.ettus.com> >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> <http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com> >> >> > > > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com > _______________________________________________ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
