[USRP-users] TwinRX min frequency

this is my tuning code tune_request.target_freq = Frequency*MHzToHz;tune_request.rf_freq_policy = UHD_TUNE_REQUEST_POLICY_AUTO; tune_request.dsp_freq_policy = UHD_TUNE_REQUEST_POLICY_AUTO; if frequency is less 50 MHz signal in spectrum is out (banwidth 1 MHz) .

[USRP-users] TwinRX min frequency

Hello In documatation indicates that minimum frequency of receiver TwinRX is 10MHz but when I tune in 49 MHz there is no signal. What exactly minimum tunable frequncy og TwinRX ?If it means that min = frequency - band / 2 ?How in this case will tune in to a frequency below 5MHz ? Thank you .

[USRP-users] Command inside streaming repeat

Пересылаемое сообщение От: Андрей 1 Дата: 22.03.2018, 10:03 Кому: Usrp Users Тема: RE: RE: Command inside streaming After getting UHD_ERROR_IO, I stop receiving data and have to reopening then device

Re: [USRP-users] Command inside streaming

After getting UHD_ERROR_IO, I stop receiving data and have to reopening then device (uhd_rx_streamer_free,uhd_usrp_free,uhd_usrp_make,uhd_rx_streamer_make,uhd_usrp_get_rx_stream and other). My questionIf I can call a function uhd_usrp_get_time_now inside streaming why occurs error that discribe

Re: [USRP-users] Command inside streaming

My configuration:OS Windows7 x32 UHD version 3.10.3 X300+one twinRX.Sample rate 12.5 MHz. 1 Gbit Ethernet.I switch the antennas and request data from two channel as quickly as possible(~ 20 times per second). Initially, the function get_time_now works fine but after some time the result returns

Re: [USRP-users] Command inside streaming

Sorry. I was wrong. uhd_usrp_get_time_now Thank you Пересылаемое сообщение От: Андрей 1 Дата: 21.03.2018, 17:34 Кому: Usrp Users Тема: Command inside streaming Ok. But when I frequently call uhd_usrp_set_time_now sometimes I

[USRP-users] Command inside streaming

Ok. But when I frequently call uhd_usrp_set_time_now sometimes I get UHD_IO_ERROR error after which there is no data and I have to close and open the device. Thank you ___ USRP-users mailing list USRP-users@lists.ettus.com

[USRP-users] Command inside streaming

Hello Can I use uhd_usrp_set_rx_freq between UHD_STREAM_MODE_START_CONTINUOUS and UHD_STREAM_MODE_STOP_CONTINUOUS.Another question is about using uhd_usrp_get_time_now inside streaming.Let's say I need to switch the antennas. The B210 board does not have a GPIO and then I use an external switch

[USRP-users] FWD: set_rx_lo_source repeat

I think that the results with clock() are correct.The main issue is that the time at which data from all frequencies is present is meaningably greater than 5 msюIf I set the time to 5 ms as in the original example, the receiver will not be able to rebuild and the time measurement shows that it

[USRP-users] set_rx_lo_source repeat

HelloEarlier I already wrote about big times for the example of twinrx_freq_hopping http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/2018-February/027782.htmlCan anyone analyze the source code(rx_samples_c in the attachment) and say why it turns out such a strange result (TestTwinRX)

[USRP-users] set_rx_lo_source

Hello I duplicated the attachment with the source code.Derek can you see what's wrong.I can understand what the maximum speed of perestroika I can get with TwinRX. Thank you ___ USRP-users mailing list USRP-users@lists.ettus.com

Re: [USRP-users] X300 sample rate

es). The streaming rate called out in your screen shots is 10.0Msps. Does that answer your question? -Daniel On Fri, Mar 2, 2018 at 7:57 AM, Андрей 1 via USRP-users <usrp-users@lists.ettus.com> wrote: Hello When I open device with uhd_usrp_ma

Re: [USRP-users] X300 sample rate

estion? -Daniel On Fri, Mar 2, 2018 at 7:57 AM, Андрей 1 via USRP-users <usrp-users@lists.ettus.com> wrote: Hello When I open device with uhd_usrp_make in the terminal I see a message "invalid sample rate 100 MHz actual rate is 200 MHz".The same message I see when ru

[USRP-users] set_rx_lo_source

Hello In the previous post(twinrx_freq_hopping example), I wrote that I could not get time in 5 ms for example twinrx_freq_hopping.I measure the commands execute time in the recieve loop and found with surprise that the set_rx_lo_source function for the first time worked 0 ms and the next time

[USRP-users] twinrx_freq_hopping example

Will there be a compiled example for windows? Thank you ___ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com

Re: [USRP-users] twinrx_freq_hopping example

often applications will actually want to sit on one frequency longer than 5 ms and are only using the LO source swapping ability to avoid the dead time of synthesizer tuning. Regards, Derek On Mon, Feb 26, 2018 at 3:21 PM, Андрей 1 via USRP-users <usrp-users@lists.ettus.com

[USRP-users] twinrx_freq_hopping example

Thank you for the clarification about set_rx_lo_freq. Can the problem with long setup time arise due to the fact that I use C API? Thank you ___ USRP-users mailing list USRP-users@lists.ettus.com

[USRP-users] twinrx_freq_hopping example

I have no any error in twinrx_recv.If the tuning frequency is already sufficiently small, then why these special calls(set_rx_lo_freq) for twinRX? Thank you ___ USRP-users mailing list USRP-users@lists.ettus.com

[USRP-users] (no subject)

Im using UHD 3.10.3 and have no error in twinrx_recv ___ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com

[USRP-users] twinrx_freq_hopping example

Hello Im using X300+TwinRX in Windows.In source UHD 3.10.3 for linux I found example twinrx_freq_hopping.How much I understand in this example the receiver is tuned with the period 5ms.As written in the title of the example, I need to use set_rx_lo_freq.But it is not in the source code of the

[USRP-users] uhd_rx_metadata_error_code_timeout error

Sample rate is 625 kHz and usb3.0 is internal intel controller. The problem with uhd_rx_metadata_error_code_timeout error occurs both on the desktop and laptop. By the way, I did not notice such a problem in single-channel mode. ___ USRP-users mailing

[USRP-users] uhd_rx_metadata_error_code_timeout error

Hello My device is b210 version of UHD is 3.9.5 OS Windows7. I work with this device in dual channel mode.Occasionaly after call function sampler_recv I have uhd_rx_metadata_error_code_timeout error.When the number of errors exceeds a certain number (usually 9) аll further calls for reading

[USRP-users] b210 dual channel mode

Hello My device is b210 version of UHD is 3.9.5 OS Windows7 I try get samples in dual channel mode and I dont wont use continuious stream becose in its hard for pc for high sample rate. So I use UHD_STREAM_MODE_NUM_SAMPS_AND_DONE and periodicaly have uhd_rx_metadata_error_code_timeout error with