Re: [USRP-users] USRP B210 TX-Issues

Hi Derek, That makes sense, yeah. Thanks! 2018-02-12 23:42 GMT+01:00 Derek Kozel : > Hello Jonathan, > > The gain setting in the USRPs are indexed from minimum gain. On most this > means a gain of 0 is actually an attenuation of the signal. The N210's gain > range is

[USRP-users] Poor Tx/Rx Isolation on B205

Hello, I've noticed that the isolation between the Tx/Rx and the Rx2 port is quite poor at the upper frequencies ~22dB at 5.9GHz. Could you explain if this is to be expected? Would it be possible to know which switch you are using? Any way to improve the isolation? cheers, Dominik -- --

[USRP-users] B200 USB high CPU usage

Hi. We have bought a B200 board and are having issues simply receiving the samples and would like some support in the matter. Running the command   ./rx_samples_to_file --null --rate 5600 on a Sony Vaio Z with an I5-3210M running Ubuntu Server 17.10 shows a high CPU usage of ~78%. Is such a

Re: [USRP-users] X310 underflow in transmit-only configuration

Hi all, I think I may have identified the problem. See what you think. I added a bit more info output to the tx_timed_loop.cpp test program (see attached) and made note of the time a packet is scheduled to go out versus the time the send loop completes. Keeping in mind that the loop runs as

[USRP-users] Control LO frequency by FPGA

Hi, I am interested in controlling LO frequency using E312 in such a way that timed command must be used. However, as far as I know, E312 doesn't support timed command for RF front end. So I am thinking if I could write some simple modules in Verilog HDL setting up LO frequency. I am wondering

Re: [USRP-users] B200 USB high CPU usage

On 02/13/2018 04:52 AM, Kasper Føns via USRP-users wrote: Hi. We have bought a B200 board and are having issues simply receiving the samples and would like some support in the matter. Running the command ./rx_samples_to_file --null --rate 5600 on a Sony Vaio Z with an I5-3210M running

Re: [USRP-users] B200 USB high CPU usage

Hi Kasper, There are several caveats/issues/topics to consider with regards to running at higher sample rates with the B2xx. Generally speaking, Linux will offer better performance than Windows. What version of UHD are you using? If you're not using UHD 3.10.3.0, can you please try upgrading?

Re: [USRP-users] Poor Tx/Rx Isolation on B205

What would the equivalent of this be for the e310? On Tue, Feb 13, 2018 at 16:23 Marcus D. Leech via USRP-users < usrp-users@lists.ettus.com> wrote: > On 02/13/2018 03:30 AM, Dominik Eyerly via USRP-users wrote: > > Hello, > > I've noticed that the isolation between the Tx/Rx and the Rx2 port

Re: [USRP-users] Poor Tx/Rx Isolation on B205

On 02/13/2018 03:30 AM, Dominik Eyerly via USRP-users wrote: Hello, I've noticed that the isolation between the Tx/Rx and the Rx2 port is quite poor at the upper frequencies ~22dB at 5.9GHz. Could you explain if this is to be expected? Would it be possible to know which switch you are