[USRP-users] USRP E312 sample rate dips occasionally

Hello - I am using the USRP E312 and I am doing a 2 RX channel capture into the onboard 1GB RAM. Sample rate is set to 5Mhz. I am able to achieve capturing from both antennas at this sample rate but for some odd reason, I am not able to maintain consistent 5Mhz sample rate. i.e. The status

[USRP-users] USRP E312 stops transmission when disconnected from computer

Hello - I am using a USRP E312 to transmit a signal from a file. I have a computer connected to the USRP E312 via serial USB and I SSH into the USRP E312. Inside the USRP E312, I have a file that is transmitted. I use the out of the box program that is already in the USRP E312 (tx_from_file

[USRP-users] USRP b210 time tagging

Hello - I am using the USRP b210 but this questions can be for all USRPs. Do they provide time tagging of the data transmitted and received or is that something that I would have to create myself. Thanks, Daniel Cho ___ USRP-users mailing list

[USRP-users] AGC usrp b200mini

Hello - I have a few questions regarding the usrpb200mini. Does it have an AGC? When setting the gain manually through GNUradio, does that bypass the AGC or will the AGC kick in when it senses a low powered signal. What is the relationship between the manual gain set through GNUradio and the

[USRP-users] Frequency synching USRP B210

Hello - I am using a USRP B210 with a GPSDO. All the parts are assembled. When I power up my USRP, I get a green light at the GPS ANT LED for a couple seconds before it shuts off. When I run a program, it recognizes that a GPSDO module is installed. I ran query_gpsdo_sensors to make sure

[USRP-users] Frequency synch using USRP B210 GPSDO

Hello - I am using a USRP B210 with a GPSDO. All the parts are assembled. When I power up my USRP, I get a green light at the GPS ANT LED for a couple seconds before it shuts off. When I run a program, it recognizes that a GPSDO module is installed. I ran query_gpsdo_sensors to make sure

Re: [USRP-users] pps ref input B210

So you need to have the 1 PPS AND a reference clock (whether 10MHz input or GPSDO)? From: Marcus D. Leech [mailto:mle...@ripnet.com] Sent: Wednesday, September 6, 2017 4:27 PM To: Cho, Daniel J (332C) Cc: usrp-users@lists.ettus.com Subject: Re: [USRP-users] pps ref

[USRP-users] B210 overflow

Hello - I am having issues with overflow with the USRP B210 at 20 MSPS. I am using a LiveUSB that has Ubuntu and Gnuradio in it. The gnuradio flow chart is just the USRP source going into a file sink with the destination being just /dev/null. Since the data is going to /dev/null, there

[USRP-users] b210 overflow

Hello - I am using a USB 3.0 with a USRP b210 and I should be having no trouble receiving or transmitting 61.44 Msps but I am getting overflows when trying to receive just 20 Msps. What is the reason for this low rate? I am using a virtual machine but all the settings are maxed out with RAM

[USRP-users] Virtual machine setup

Hello - I tried looking for a guide in setting up an Ubuntu VM to use for a USRP B210 that I just bought but was unable to find anything online. How much memory (RAM) should we allocate to the VM? How big should the virtual disk size be? How do we configure the network to connect the USRP to the

Re: [USRP-users] Gnu radio compatibility

l.j@jpl.nasa.gov>; Cho, Daniel J (332C) via USRP-users <usrp-users@lists.ettus.com>; Nate Temple <nate.tem...@ettus.com> Cc: usrp-users@lists.ettus.com Subject: Re: [USRP-users] Gnu radio compatibility Hello, Ah that explains it. It's not that GNU Radio isn't generally compatible with y

Re: [USRP-users] Gnu radio compatibility

branch or a tagged release, such as "v3.7.10.2". What error are you getting? Regards, Nate Temple > On Aug 21, 2017, at 3:51 PM, Cho, Daniel J (332C) via USRP-users > <usrp-users@lists.ettus.com> wrote: > > Hello – > > I have a UHD 3.10 installed.

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

e3x0_hw_pps The Octoclock which we use produces a 20% duty cycle square wave with 5V high and 0V low. Regards, Derek On Wed, Aug 2, 2017 at 2:10 AM, Cho, Daniel J (332C) via USRP-users <usrp-users@lists.ettus.com<mailto:usrp-users@lists.ettus.com>> wrote: Hello – I am using 2 USRP

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

M, Cho, Daniel J (332C) via USRP-users <usrp-users@lists.ettus.com<mailto:usrp-users@lists.ettus.com>> wrote: Hello – I am using 2 USRP E310 which I would like to frequency sync together. I am using a frequency generator which is generating a 1 PPS (1Hz sine wave) signal which I p

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

Hello - I am using 2 USRP E310 which I would like to frequency sync together. I am using a frequency generator which is generating a 1 PPS (1Hz sine wave) signal which I put through a power splitter to provide both USRPs with the same 1 PPS signal. I configured the rx_samples_to_file and

Re: [USRP-users] Using a reference clock on USRP E310/312

ple which supports setting the time source, you can modify other examples based on this. https://github.com/EttusResearch/uhd/blob/maint/host/examples/test_pps_input.cpp#L68 Are you trying to achieve phase synchronization? Regards, Derek On Tue, Jul 25, 2017 at 11:40 PM, Cho, Daniel J (332C) via U

[USRP-users] CW signal shown at center frequency

Hello - I am using two USRP E310s with on transmitting and one receiving. I had one USRP transmit a CW tone at 4.2 GHz and had the other USRP receive at 4.205 GHz. For some reason, I see two peaks, one at the expected frequency (5 MHz offset from center) and one at center frequency.

[USRP-users] USRP N-series loading FPGA

Hello - In order to load a custom FPGA, you run the python script "uhd_image_loader --args="type=usrp2,addr=" --fw-path="" --fpga-path=""" which is then automatically loaded at runtime. Is that on-board storage volatile? Will I have to run this python script every time I reboot the USRP