Re: [USRP-users] E312 rfnoc_radio_loopback.cpp FPGA image

2019-01-11 Thread Martin Braun via USRP-users
That is correct, and that will also allow you to run said example. -- Martin On Thu, Jan 10, 2019 at 10:27 AM Xingjian Chen via USRP-users < usrp-users@lists.ettus.com> wrote: > It works by setting tx-blockid to 0/Radio_0 and tx-chan to 1. I think > there is only one radio in E312 but two chann

Re: [USRP-users] X310 witn TwinRX: master_clock_rate issue

2019-01-11 Thread Martin Braun via USRP-users
Emanuel, the TwinRX only works with 200e6 clock rate. The analog filtering is not designed for other rates. So if you have even one TwinRX, you need 200e6. I'll make sure we update our manual to clarify that. -- M On Fri, Jan 11, 2019 at 4:51 AM Emanuel via USRP-users < usrp-users@lists.ettus.co

Re: [USRP-users] UHD log messages

2019-01-11 Thread Martin Braun via USRP-users
Varala, you only need to add a logging backend if you want the log message to go somewhere other than stderr or a log file. The 'console logger' means 'stderr'. So, just grab your stderr output if you want to have those log messages. You can control the console log level with the UHD_LOG_LEVEL an

Re: [USRP-users] External reference issue of synchronizing two USRP N210s

2019-01-11 Thread Marcus D. Leech via USRP-users
On 01/11/2019 09:58 AM, Daniel Jepson wrote: Hi Kwansik, The Octoclock datasheet specification is only valid when driving into a 50 ohm load, and it should be just under 1.4Vpp. Cheers, -Daniel Indeed, which is why the oscilloscope trace shows a bit of distortion--I see the exact same thing

Re: [USRP-users] use a usrp x310 as MIMO transmitter, daughterboard synchronization?

2019-01-11 Thread Marcus D. Leech via USRP-users
On 01/11/2019 10:42 AM, Yang Liu wrote: Hi Marcus, I have one more question, SBX and UBX support phase alignment (phase synchronization) on certain usrps. Does phase alignment means that after using timed commands, the phase offset between two front-ends will be always zero (or very close to

Re: [USRP-users] use a usrp x310 as MIMO transmitter, daughterboard synchronization?

2019-01-11 Thread Yang Liu via USRP-users
Hi Marcus, I have one more question, SBX and UBX support phase alignment (phase synchronization) on certain usrps. Does phase alignment means that after using timed commands, the phase offset between two front-ends will be always zero (or very close to zero) or just be a constant which doesn't var

Re: [USRP-users] External reference issue of synchronizing two USRP N210s

2019-01-11 Thread Daniel Jepson via USRP-users
Hi Kwansik, The Octoclock datasheet specification is only valid when driving into a 50 ohm load, and it should be just under 1.4Vpp. Cheers, -Daniel On Thu, Jan 10, 2019 at 7:22 PM Marcus D. Leech via USRP-users < usrp-users@lists.ettus.com> wrote: > On 01/10/2019 08:07 PM, Kwansik Park via USR

[USRP-users] X310 witn TwinRX: master_clock_rate issue

2019-01-11 Thread Emanuel via USRP-users
Dear Ettus team, we have a configuration of an X310 with one TwinRX and one CBX-120 front-end. uhd_usrp_probe shows both front-ends correctly. The latest UHD release is used. Now if I want to use, e.g., benchmark_rate or an application in Gnuradio, I get the following warnings: * Not se