On 04/10/2017 09:31 AM, Dan CaJacob wrote:
It's probably unreasonable to expect the ARM processor to deliver 56 Msps
to the 9361 without underflowing. It's just not that fast. It's marginal
even on a high performance desktop CPU. You could try implementing a noise
source in the FPGA using RFNO
Hello, all. Perhaps I was a little too optimistic in attempting to use
the Ettus E310 as a broadband noise source. I'm using the GRC models
"Fast Noise Source" with uniform noise type connected to a "UHD: USRP
Sink" with a CF of 1 GHZ and sample rate set to 4 Msps. Running the
GRC-generated
On 03/28/2017 01:51 PM, mle...@ripnet.com wrote:
The baseband signal is simply mixed with the LO in the hardware.
Thanks, Marcus. That should equate to AM which is what I want. Sincerely,
John Wood
U.S, Naval Res
Hello, all. When I connect a GRC "Fast Noise Source" block output to
the input of a "UHD: USRP Sink" (an Ettus E310) and connect a spectrum
analyzer to the Tx port on the E310 I can see the RF output. My
question (using either a gaussian or normal distribution specified as a
baseband input to
s,
Marcus
On 01/05/2017 08:18 PM, John B. Wood wrote:
Hello, all. This may be a "RTFM" question but with the stock tools in
GRC (or a non-GRC generated .py file) can a gaussian white noise
generator be readily implemented on an Ettus E310 to provide a
broadband RF noise output (some l
Hello, all. This may be a "RTFM" question but with the stock tools in
GRC (or a non-GRC generated .py file) can a gaussian white noise
generator be readily implemented on an Ettus E310 to provide a broadband
RF noise output (some level in dBW/Hz) over a specified bandwidth
(within the capabili
Hello, all. In the /usr/share/uhd/images directory on the ARMv7
processor (p/o of the E310 and running Xilinx Linux) there are a number
of FPGA images for ostensibly other architectures besides the E310. If
another of these, say one of the several ones for an N210 device are
loaded into the E
Hello, all and perhaps a question for Ettus:
While I really don't have a need for this right now I was wondering if
the E310 can use micro SD cards larger than 8 GB. I've downloaded
updated 8 GB card images from Ettus that work fine (as they should) when
copied to an 8 GB card but could that
On 09/29/2016 11:44 AM, Marcus Müller wrote:
Hi John,
I really hate to nitpick, but I also feel that I must clarify a few things:
1. The E310 has to be placed into "network mode", which loads the
E310 FPGA with appropriate code.
No, network mode works with the default (and only) FPGA image –
On 09/28/2016 05:53 AM, John Smith wrote:
I have an E310 device connected over an Ethernet link to a laptop running GNU
Radio.
When I attempted to execute a GNU flow graph containing a UHD block, I got the
following error:
RuntimeError: LookupError: KeyError: No devicesfound for -> Empty D
Hello, everyone. Short of starting with a fresh Fedora or Ubuntu OS
build what's the quickest way to remove an older Gnuradio build prior to
installing a later version? I have reason to believe trying to install
a newer build doesn't overwrite all the older stuff and can cause
startup issues
On 08/31/2016 11:30 AM, Philip Balister wrote:
GNURadio is installed in the usual place in /usr/.
Philip
Thanks, Philip! I didn't realize that a lot of those directories in
/home/root get created the first time you run GRC (including amending
PATH so you can launch GRC from the home direc
Hello, all. From the Ettus website I recently downloaded and extracted
the "sdimage-gnuradio-demo.direct" file from the "ettus-e3xx-sg1" folder
(appropriate for my E310 SN). I used dd to copy the image to a micro SD
card without incident and installed it in the E310. The E310 boots fine
and
Hello, all. From the Ettus website I recently downloaded and extracted
the "sdimage-gnuradio-demo.direct" file from the "ettus-e3xx-sg1" folder
(appropriate for my E310 SN). I used dd to copy the image to a micro SD
card without incident and installed it in the E310. The E310 boots fine
and
On 08/03/2016 01:35 PM, Marcus Müller wrote:
Hi John,
well, that's the nature of upgrading a distro: you bring the libraries
and runtime to the current revision; everything linking against that
needs to re-compile.
But: recompiling UHD and should work out of the box, as far as I can
tell, i.e. y
On 08/02/2016 04:06 PM, Marcus Müller wrote:
You need to recompile UHD and GNU Radio, or else they will link to the
old boost library that 14.04 brought!
Sh**! That's exactly what caused me such problems before. I took me
several weeks of work with the folks at Ettus just to get everything
ru
On 08/02/2016 12:37 PM, Neel Pandeya wrote:
Hello John:
I'm running Ubuntu 16.04.1 (64-bit) with an E310 right now, and it works
fine. I don't think you should have any problems. You could always test it
in VirtualBox first.
--Neel Pandeya
OK, I was afraid of this. After updating from Ubuntu 1
Hello, all, especially to Ettus product users. For sometime now I've
been using Ubuntu 14.04 LTS/GRC 3.7.8 to communicate in network mode
with my Ettus E310 without issues. The Ubuntu/GRC versions are a
"happy" pairing when working with the E310. The question is if I update
to Ubuntu 16.04.1
Hello, everyone. After much assistance from Neel Pandeya and Marcus
Leech at Ettus some months back I got my USRP E310 working in the remote
mode with GRC 3.7.7.1/Ubuntu 14.04 LTS on the local platform. Haven't
discovered any bugs or segfaults using this setup.
Should I update to the latest
On 12/25/2015 01:02 PM, David McQuate wrote:
Broadcast radio & TV transmitters, police & fire repeaters, and others have potent
signals. If your system does not attenuate them, by using low-pass, high-pass, or band-pass
filters, the peak voltage at your analog to digital converter may at times
Hello, everyone, and I trust most of you will indulge a GRC newbie.
After reading some of the online Gnuradio docs, I'm puzzled by what's
inside building blocks that appear in the GRC block tree panel. If I
select "WBFM Receive" from the "Modulators" tab, for example, I know
this defined by t
On 11/09/2015 12:46 PM, John B. Wood wrote:
On 11/09/2015 11:15 AM, Philip Balister wrote:
O
I wonder if the gain setting needs adjusting for the E310?
Philip
Increasing the RF gain slider doesn't appreciably improve S/N. Make
that ditto for the audio gain. The source of the noise is un
On 11/09/2015 11:15 AM, Philip Balister wrote:
O
I wonder if the gain setting needs adjusting for the E310?
Philip
Increasing the RF gain slider doesn't appreciably improve S/N. Make that
ditto for the audio gain. The source of the noise is unknown at this
time. Sincerely,
John B.
audio would be
very good except there's a lot of noise coming through. I don't have
this with the mono example. There may be some opportunity for noise
clean-up once I absorb what's going on with the flow diagram. Sincerely,
be kind of neat. Thanks for your time and comment. Sincerely,
John B. Wood
U.S. Naval
Research Laoboratory
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