Hello all,
I am trying to understand what is going on while receiving RF data in
USRP E310. I am using gnuradio in programming of USRP E310.
I investigated AD9361 chip and the baseband data rate of AD9361 is
maximum of 61.44MHz. So this is equal to master clock rate as i
understood. For exam
Hi,
there is a file called twinrx_freq_hopping.cpp, which is using twinrx.
Best regards,
Fabian
Am 04.12.2018 um 06:28 schrieb Koyel Das (Vehere) via USRP-users:
Hi,
I am not finding an example to receive data for twinrx case of USRP
x300/310.
I am looking at the following link:
https:
oh wow, that's interesting, though I have little idea how to
reconciliate storage backpressure with dropping out of networking.
My best guess is that the storage system pushing back on too much data
somehow causes additional CPU load (especially: interrupts/context
switches), and that worsens the s
Why did you change the GCC to the ancient 4.8? How did you do that?
Best regards,
Marcus
On Tue, 2018-12-04 at 14:15 +0800, Philip_liu via USRP-users wrote:
> Hi all,
>
> I download and update all the dependency packages base on
> ubuntu 18.04LTS,but the UHD cannot compile successful
Hello Koyel:
Which version of UHD are you using?
You can use the "rx_samples_to_file" program in the "examples" folder to
receive on TwinRX.
--Neel Pandeya
On Tue, 4 Dec 2018 at 00:24, Fabian Schwartau via USRP-users <
usrp-users@lists.ettus.com> wrote:
> Hi,
>
> there is a file called twinr
Hi there,
I just discovered that in addition to the external 10MHz reference in,
the USRP N310 also has external local oscilator inputs, one for each
daughterboard and each TX/RX. So does that mean that in order to
synchronize multiple N310 in frequency, phase, and time, it is no longer
suffi
https://kb.ettus.com/N300/N310#Front_Panel
The AD9371 has a divide-by-2 PLL and the input baluns are optimized for RF
center frequencies 300 MHz-4 GHz (external LO inputs 600 MHz-8 GHz). Consult
the AD9371 user guide on the Analog Devices website for more details on what
goes on inside the RF
I have a X310 with a pair of CBX-130s installed and am running RFNoC. The
flowraph looks like this:
Radio (running at 200MHz) -> DDC (200MHz down to 50MHz) -> splitter -> off to
some other blocks.
What is weird to me is that I wasn't thinking and I set the sample_rate to to
be the master
Hi Neel,
I am stuck as usrp 2954 R has gone for repair. As I said earlier I was using
gnuradio in windows but now I am switching to Ubuntu.
What is the latest stable UHD version?
Do you mean to run rx_samples_to_file in two separate threads? Or how can I use
that to receive from 2 antennas?
R
On Tue, Dec 4, 2018 at 10:35 AM Jason Matusiak via USRP-users <
usrp-users@lists.ettus.com> wrote:
> I have a X310 with a pair of CBX-130s installed and am running RFNoC. The
> flowraph looks like this:
>
>
> Radio (running at 200MHz) -> DDC (200MHz down to 50MHz) -> splitter ->
> off to some oth
Hi Koyel,
if you install Ubuntu 18.10 (which you really should if you want to use
newest versions of software), you'll get UHD 3.12.0.0 as built from
Ubuntu. That should be recent enough for you to use with the TwinRX.
If you use Ubuntu 18.04, you only get UHD 3.10, and that's a bad choice
for thi
Hello Koyel:
I agree with Marcus, I would recommend using Ubuntu 18.10 for GNU Radio.
I would suggest using the most recent tagged release of UHD, which is
"v3.13.1.0-rc1", especially if you have TwinRX.
https://github.com/EttusResearch/uhd/tree/v3.13.1.0-rc1
The "rx_samples_to_file" program is
I have not used the Basic Rx before, but my expectation is that the subdev
spec for your use case should be: "A:A A:B B:A B:B". If that causes an
error, then I don't know what the subdev should be.
Rob
On Mon, Dec 3, 2018 at 11:51 AM Gwenhael Goavec-Merou via USRP-users <
usrp-users@lists.ettus.c
Does the X310 have any real-time DC offset calibration? I am aware of the
separate calibration procedure and resulting CSV file which provides a
lookup for the correction at a given frequency. But, this is a fixed
correction as opposed to a dynamic one.
I am seeing a large LO leakage signal at t
rx_samples_to_file is generic for many USRPs, but should work for the
specific case of the TwinRx. Same goes for rx_mult_samples. There is also
a specific twinrx_freq_hopping example you could look at.
Rob
On Tue, Dec 4, 2018 at 12:30 AM Koyel Das (Vehere) via USRP-users <
usrp-users@lists.ettu
On 12/04/2018 12:07 PM, Rob Kossler via USRP-users wrote:
Does the X310 have any real-time DC offset calibration? I am aware of
the separate calibration procedure and resulting CSV file which
provides a lookup for the correction at a given frequency. But, this
is a fixed correction as opposed
On 12/04/2018 10:14 AM, Florian Kaltenberger via USRP-users wrote:
Hi there,
I just discovered that in addition to the external 10MHz reference in,
the USRP N310 also has external local oscilator inputs, one for each
daughterboard and each TX/RX. So does that mean that in order to
synchroniz
Hi Brian,
I have finished the DDC block 1:8 and it works perfectly!! :) :)
Now I am in my final step, a 2:16 DDC block:
- Channels 0:7 connected to input 0.
- Channels 8:15 connected to input 1.
The verilog module works, but I have a problem with the UHD driver. I have
timeout on chan 8,9,10...1
Hey Carlos,
On Tue, Dec 4, 2018 at 1:16 PM Carlos Alberto Ruiz Naranjo <
carlosruiznara...@gmail.com> wrote:
> Hi Brian,
>
> I have finished the DDC block 1:8 and it works perfectly!! :) :)
>
Congratulations!
>
> Now I am in my final step, a 2:16 DDC block:
> - Channels 0:7 connected to input
Hi Marcus and Robin,
thanks for your answers, this is helpful information. I should add, that
I actually tried the synchronization with an octoclock (10MHz + PPS),
but it did not give me the expected results, i.e., I saw some residual
frequency offsets. But maybe I screwed up at some point. Le
>
> DC real-time DC-offset correction has been a part of the "standard" FGPA
> image for most USRPs since the USRP2. With UHD "Traditional"
> (Non-RFNoC) you can turn it off. Not sure how you accomplish that with
> RFNoC.
>
Since the X310 uses the external CSV calibration file to set the DC
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