On 09/06/2016 09:09 PM, 徐海东 wrote: > Hi Mleech, > > We set master clock rate of USRP B210 to 12.8MHz, > usrp->set_master_clock_rate(12.8e6); > > > But we got the following warnings: > ========================================================== > UHD Warning: > The total sum of rates (12.800000 MSps on 1 channels) exceeds the > maximum capacity of the connection. > This can cause overflows (O). > > UHD Warning: > The total sum of rates (12.800000 MSps on 1 channels) exceeds the > maximum capacity of the connection. > This can cause underruns (U). > =========================================================== > What's wrong with it? Nornally you should have to set the master clock rate yourself. When you set the sample-rate, UHD will pick a good clock-rate for you. In this case, you're likely on a USB-2.0 port, and over USB-2.0, you can only get about 8Msps with full-size samples over the wire. > BR > Haidong Xu > ------------------ Original ------------------ > *From: * "mleech"<mleech@ripnet.com>; > *Date: * Wed, Sep 7, 2016 00:48 AM > *To: * "徐海东"<haidong.xu@wico.sh>; > *Cc: * "usrp-users"<usrp-users@lists.ettus.com>; "徐景" > <jing.xu@wico.sh>; "舒睿俊"<ruijun.shu@wico.sh>; "王新宇" > <xinyu.wang@wico.sh>; "刘立刚"<ligang.liu@wico.sh>; > *Subject: * Re: [USRP-users] Does USRP B210 supports 12.8M HZ sample > rates? > > Yes it does. > > On 2016-09-06 05:43, 徐海东 via USRP-users wrote: > >> HI lists, >> Does USRP B210 supports 12.8M HZ sample rates? >> Waiting for reply. >> BR. >> Haidong Xu >> >> _______________________________________________ >> 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 b