Are you certain you're connected to a USB 3.0 port / with a USB 3.0
cable? (the maximum practical sample rate for USB 2.0 is around 3.75
MHz assuming complex float samples). Do you also see the same problems
if you run benchmark_rate from UHD examples?
-Dustin
On 7/7/22 01:37,
Hi Jeff,
I have been meaning to look into this as well, because I have some need of this
myself. I
believe I've found something that might do the trick in the usrp-users
archives, but I
haven't had a chance to test it yet.
Marcus,
Interesting, I hadn't considered that. I'm seeing this with both UHD 4.0 and
UHD 3.15.
Dustin
On Mon, 2020-11-23 at 15:29 -0500, Marcus D Leech wrote:
> Could you confirm which version of UHD you’re using?
>
> There has historically been a problem using both TwinRx and UBX on the
Marcus,
I do have access to sig gens, but I would have to take everything into town to
do that. (sanest thing to do during covid
was to bring portable things home...)
What I do have handy though is a spectrum analyzer (albeit, not a particularly
good one, but when working with a narrow
span it
Marcus,
I tried it without timed commands last night. It was landing on the
same frequencies as it did with timed commands i.e. didn't fix that
problem.
Dustin
On Wed, 2020-11-18 at 20:05 -0500, Marcus D. Leech wrote:
> On 11/18/2020 07:34 PM, Dustin Widmann wrote:
> > On Wed, 2020-11-18 at
_ddc.v#L178
>
> You might try doubling the number in each case then rebuild your FPGA
> image.
>
> Thanks,
>
> Wade
>
>
> On Wed, Nov 18, 2020 at 9:25 AM Dustin Widmann via USRP-users
> wrote:
> > Hi usrp-users,
> >
> > terminate called after throw
the number in each case then rebuild your FPGA
> image.
>
> Thanks,
>
> Wade
>
>
> On Wed, Nov 18, 2020 at 9:25 AM Dustin Widmann via USRP-users
> wrote:
> > Hi usrp-users,
> >
> > terminate called after throwing an instance of 'uhd::op_timeout'
> >
On Wed, 2020-11-18 at 18:27 -0500, Marcus D. Leech via USRP-users
wrote:
> On 11/18/2020 05:32 PM, Dustin Widmann via USRP-users wrote:
> > Hi usrp-users,
> >
> > I've noticed something strange with an experiment I've been doing.
> > The
> > experiment is set u
On Wed, 2020-11-18 at 18:27 -0500, Marcus D. Leech via USRP-users
wrote:
> On 11/18/2020 05:32 PM, Dustin Widmann via USRP-users wrote:
> > Hi usrp-users,
> >
> > I've noticed something strange with an experiment I've been doing.
> > The
> > experiment is set u
Hi usrp-users,
I've noticed something strange with an experiment I've been doing. The
experiment is set up like a reflectometer. I'm using an X310 with a
UBX-160 for transmit and both channels of a TwinRX for receive. In
short, I put up a tone with the transmitter by applying a DC offset,
tune to
Hi usrp-users,
terminate called after throwing an instance of 'uhd::op_timeout'
what(): RfnocError: OpTimeout: Control operation timed out waiting
for space in command buffer
I've been getting the error above occasionally, usually after hours of
operation. I've got a few questions about it:
*
On Thu, 2020-11-12 at 13:25 -0500, Marcus D. Leech wrote:
> On 11/11/2020 11:11 PM, Dustin Widmann wrote:
> > Hi Marcus
> >
> > I've given this a try, unfortunately I'm running into a problem
> > with
> > that. I've always gotten strange crashes with UHD 3.15 with this
> > codebase (probably my
Hi Jerrid,
Your gnuradio is built against UHD 3.15 instead of UHD 4.0. You'll
probably need to rebuild gnuradio taking care to make sure to make sure
it doesn't use 3.15 when you do.
With regards to the compat numbers
With uhd-3.15 I observed:
LD_LIBRARY_PATH=/opt/uhd-3.15/lib
Hi Marcus
I've given this a try, unfortunately I'm running into a problem with
that. I've always gotten strange crashes with UHD 3.15 with this
codebase (probably my fault, but I'm not sure why yet).
I can collect around ~200 datapoints-ish (about 20-ish retunes of the
receiver), before it
Hey Marcus,
I'm using UHD 4.0.0;;
[INFO] [UHD] linux; GNU C++ version 9.3.0; Boost_106700; UHD_4.0.0.0-1-
gcf570707
I had stumbled on the "tune twice" thing quite accidentally (I don't
think I ran into any documentation on it, I was just trying to test for
repeatability with a single frequency,
ustin Widmann via USRP-users wrote:
> > Hi usrp-users!
> >
> > I'm still relatively inexperienced with working with UHD and USRP
> > radios in general, but I feel like I'm getting better. Anyhow, I
> > have
> > *several* questions, but I'll start with one.
>
Hi usrp-users!
I'm still relatively inexperienced with working with UHD and USRP
radios in general, but I feel like I'm getting better. Anyhow, I have
*several* questions, but I'll start with one.
Setup:
USRP X310 Radio: A:UBX, B:TwinRX
If you're familiar with a "reflectometer", it's setup like
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