Re: [USRP-users] PPS sync with USRP E310 timeout error

Hello Derek, I tried out what was said below on the thread with a 5V high 0V low square wave with a 20% duty cycle inputted into the sync port of the USRPs. I used the follow code to sync them up: if (not time_source.empty()) usrp->set_time_source(time_source); //set the time at an unknown

Re: [USRP-users] Determining if an X300 is connected via 10 GigE or 1 GigE

Hi Nathan, we believe you are right. Nice catch! The line you suggested as culprit is already corrected and merged and will be pushed public in the near future. Thanks! -N On Mon, Aug 7, 2017 at 5:07 PM, Perelman, Nathan < nperel...@lgsinnovations.com> wrote: > Using the HG image I am seeing

[USRP-users] Buffer underrun issue with simultaneous transmit and receive on the X310

Hi, I'm building an application where I receive data from the x310, process the data, then transmit it out. I have 3 separate threads running, one for each task. The receive task is constantly receiving data from the x310 at 200MS/s and putting it into a buffer. The process task takes data

[USRP-users] Problem with port on USRP X310

Hello, I have my USRP X310 connected through Ethernet cable into eth1 port on a dell desktop with the following information Ubuntu 14.04 64 bit , Intel Core i7-377 CPU @ 3.4GHz x 8 Git version 1.9.1 Kernel version 3.19.0-61-lowlatency My computer is having a problem recognizing my USRP X310

Re: [USRP-users] When ssh'ing Getting prompt for Password Issue

Dear Konstantin, > Could the issue be that the ehternet cable that is in the unit is not > a crossover cable. no, that is usually not the case. If you're getting as far as being asked for a password, your SSH client is connecting to /something/. So, we can rule low-level network out. Best

Re: [USRP-users] When ssh'ing Getting prompt for Password Issue

Dekek, Could the issue be that the ehternet cable that is in the unit is not a crossover cable.. Again, I am connecting the laptop ehternet NIC card directly to the E310… I am assuming I need a crossover cable since I am hooking this up without going through a router that automatically

Re: [USRP-users] B210 MIMO, 4 Channel s

Hi Masoud, no, the B2xx series is not capable of being grouped in multi_usrps. Best regards, Marcus On 08/07/2017 04:56 PM, Masoud Naderpour via USRP-users wrote: > Hi, > Is it possible to boost the number of MIMO channels of B210 by adding > multiple USRP B210 devices to the same host? > > >

Re: [USRP-users] When ssh'ing Getting prompt for Password Issue

Thanks for the response… I just called Best Buy and they confused me. They stated you cannot write ‘files’ to USB SD micro card reader… I am assuming doing the image is not the same as writing ‘files’…. it is a form of reformatting, so it can be done. I will go buy one now…. Till my next

Re: [USRP-users] When ssh'ing Getting prompt for Password Issue

Hello, Yes, a micro SD card adapter is needed. I'm going to add to our documentation to highlight that point. There is no way to overwrite the entire SD remotely. This is true for nearly every embedded system. We do not have any recommended micro SD card adapter. There are many from good brands

Re: [USRP-users] PPS and REF out form a X310 and leakage problem

Hello Jorge, The Octoclock is sold in two versions, one with an internal GPSDO and one that requires an external source. The X310 and X300 both do not support daisy chaining. There are a few issues with it, one of the key ones being propagation delay. If the 1PPS signal was passed from one unit

Re: [USRP-users] When ssh'ing Getting prompt for Password Issue

Again… This was not explained clearly…. Are you stating I need a micro SD Card adapter/burner to do this? I thought I just leave it hooked up to the E310 with the SD card in it and this can be done? Please clarify… And if I do need a burner, which one do you suggest I buy… Thanks…. From:

Re: [USRP-users] When ssh'ing Getting prompt for Password Issue

Hi Konstantin, We have no way of knowing what device the SD Card will enumerate as. There are many guides online for using utilities like fdisk and dmesg to find the name of the device. Using Windows or Linux you will need to remove the micro SD card and use a USB to micro SD card adapter to

Re: [USRP-users] Fw: a few questions on rfnoc

Hi Nicolas, Thank you very much for your quick response. Regarding variable packet sizes the output of my block is going straight to the host side and I am not planning these to connect to other blocks. In this case do you see any issue? Will uhd and gnuradio cope with that or will I have

Re: [USRP-users] When ssh'ing Getting prompt for Password Issue

OK... I could not wait.. I tried both... Btw, I had to install the dd utility too All these intermediate steps would of have been nice to have listed for novice users... Anyway, I tried the mmcblck0 directory for my E310 and it didi transfer the files over Now, I am assuming I

Re: [USRP-users] When ssh'ing Getting prompt for Password Issue

Nate, I was unsuccessful with the Windows approach mainly that the file downloaded is a tar When trying to use the Win32Image software, it did not find the drive to connect when I had the E310 hooked up via ethernet... Even though I was able to ping to it through the NIC card. So, I

Re: [USRP-users] Fw: a few questions on rfnoc

Hello Dario, We are creating a RFNoC block that inputs a continuous flow of data and > needs to output an irregular burst of variable length. > > I tried to research a bit but didn’t found a final answer on the following > questions: > >1. Packets to and from RFNoC blocks need to have a

Re: [USRP-users] Determining if an X300 is connected via 10 GigE or 1 GigE

Using the HG image I am seeing a rate greater than 1 billion bytes/second even when connected via 1G (see below). This is with UHD 3.10.1.1. I had missed the part where it does set the rate to the 1 Gig constant in the current code. Looking at the code I think this line might be wrong?

Re: [USRP-users] Help with rx_multi_sample

Hey, it would be good if you could give a little bit more information. How does your initialization look like? How does your stream command look like? Cheers, On 08/07/2017 04:30 PM, Snehasish Kar wrote: > > Hey > > Thanks that worked, there was problem in > initializing stream_args_rx.channels

[USRP-users] B210 MIMO, 4 Channel s

Hi, Is it possible to boost the number of MIMO channels of B210 by adding multiple USRP B210 devices to the same host? ___ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com

Re: [USRP-users] Help with rx_multi_sample

Hey Thanks that worked, there was problem in initializing stream_args_rx.channels Now a new error is popping up. Can you please help with that. UHD Error: The receive packet handler failed to time-align packets. 1002 received packets were processed by the handler. However, a

[USRP-users] PPS and REF out form a X310 and leakage problem

Hi all I’d like to build up 8X8 MIMO system using 4 USRP X310. To synchronize time between all of them, I used to use a function generator to feed both 1 PPS and 10 MHz reference clock to them. Today, I got an Octoclock which I thought it is able to provide both synchronization signal, but it

[USRP-users] Fw: a few questions on rfnoc

Hi, We are creating a RFNoC block that inputs a continuous flow of data and needs to output an irregular burst of variable length. I tried to research a bit but didn't found a final answer on the following questions: 1. Packets to and from RFNoC blocks need to have a min/max/fixed length?

Re: [USRP-users] When ssh'ing Getting prompt for Password Issue

Thanks for the advice Derek… I took the Windows approach as you suggested… I did download the tar file and unzipped it via Win7. But the extension on it was .direct… nit .img… So, I altered it… Do not know if this is correct… Then when I used win32diskmanager, there were no choices in the

Re: [USRP-users] Help with rx_multi_sample

Hey, how do you initialize your usrp and the streamer? Do you specify two channels when creating the streamer? E.g.: uhd::stream_args_t stream_args_rx("fc32", "sc16"); stream_args_rx.channels = {0ul,1ul}; this->rx_streamer = this->usrp->get_rx_stream(stream_args_rx); Cheers, On 08/07/2017

Re: [USRP-users] Help with rx_multi_sample

But when I am setting so, I see only the LED of one daughter board glowing. So it still receiving data from one daughter board. Please help me with it. BR Snehasish From: Julian Arnold Sent: Monday, August 7, 2017 4:46:14 PM To:

Re: [USRP-users] Determining if an X300 is connected via 10 GigE or 1 GigE

Hello Nathan, I think you are referring only to the values that are set in the creation of the "max_link_branch" of the property tree. In one version of the code (the one you highlighted at [1]) has only the branch called "link_max_rate" and this one is created and set to either the PCIE max rate

Re: [USRP-users] Help with rx_multi_sample

Hey Snehasish, it should be A:0 B:0 instead of 0:A 0:B. E.g.: usrp->set_rx_subdev_spec(uhd::usrp::subdev_spec_t("A:0 B:0")); Cheers, Julian On 08/07/2017 12:39 PM, Snehasish Kar via USRP-users wrote: > > Hello > > > I tried setting subdev to subdev("0:A 0:B") as described in the > example