I think (having gone through this before) that the real badness happens if
you put -15 dBm in the front end *and* turn all the gain up to the maximum.
Then some chip in the chain goes over its limit.
Really though, with a real world system, over the air, I'd be shocked if
you could blow up the fro
If your LNA is pumping out at 1/4W, just add an attenuator inline near your
radio to bring your signal power down to safe levels - it won't hurt you in
any appreciable way since you've got a nice LNA upfront already.
On Sun, Jul 9, 2017 at 7:03 AM Marcus Müller via USRP-users <
usrp-users@lists.et
I agree. When a B2XX has died for me, it's always this.
On Wed, Jul 12, 2017 at 4:04 AM Ralph A. Schmid, dk5ras via USRP-users <
usrp-users@lists.ettus.com> wrote:
> About ESD protection, in my B210 the first switch U807 dies all the time;
> these need some protection, too :) At the moment I have
I'd suggest installing GNURadio ;)
On Sun, Jul 16, 2017 at 7:35 PM d.des via USRP-users <
usrp-users@lists.ettus.com> wrote:
> I know that this isn't a Redhawk forum but maybe someone here has a quick
> pointer. Is there a step-by-step guide to making a simple recording using a
> B210 and Redhawk
Hi,
I have a GnuRadio modem I've developed and I'd like to reduce latency. It
does IP encapsulation and for testing, I use two USRPs to implement an OTA
connection between the modems.
I've reduced latency so far by 1) adding fill frames/bytes only at the very
last block before the USRP sink and 2
>
>> I'm pretty sure the B200 defaults are:
>>
>> send_frame_size = 8192
>>
>> num_send_frames = 16
>>
>>
>> https://github.com/EttusResearch/uhd/blob/maint/host/lib/usrp/b200/b200_impl.cpp#L532
>>
>> Ron
>> On 08/05/2017 12:00 AM,
We use several NUC6i7KYK units without any issues. They run Ubuntu 17.04
On Fri, Sep 8, 2017 at 10:29 AM Meelis Nõmm via USRP-users <
usrp-users@lists.ettus.com> wrote:
> Hello,
>
> We lately bought 2 new NUC devices (a NUC7i7BNH and a NUC6i7KYK),
> installed Debian 9 on it and tested Gnuradio on
I am pretty sure those blocks all made it into GR core. Check the examples
sections.
On Mon, Oct 16, 2017 at 5:25 PM Sumit Kumar via USRP-users <
usrp-users@lists.ettus.com> wrote:
> Thanks Robin, I found the slides. However the talk which he gave in GRCon
> 2011 was approx 3:30 hr long.
>
> Anyw
But if you want to have some fun with your co-workers. Put on a metal hat
whenever you TX. If they ask what's going on, say "Don't worry about it" :)
On Mon, Nov 6, 2017 at 4:49 PM Bakshi, Arjun via USRP-users <
usrp-users@lists.ettus.com> wrote:
> Thanks for clearing that up.
>
>
> AB
>
ves, but it
> does make a good joke.
>
> Regards,
> Kyeong Su Shin
>
> On Tue, Nov 7, 2017 at 11:01 AM, Kevin Hung via USRP-users <
> usrp-users@lists.ettus.com> wrote:
>
>> Hmm, I am just curious. What does the metal hat do?
>>
>> On Mon, Nov 6, 2017
Jeff is right, but since I happen to have tackled this problem several
times myself, I'll leave some hopefully helpful advice. My use of unicast
protocols has mostly been for spacecraft downlinks - what's your use case?
In any event, most uni/mult-cast protocols I have come across have been
develop
Hey guys,
I have put together a noise figure meter application that uses a USRP as
the sensing device. It started off as a way to measure the NF of the USRP
itself. I have a calibrated noise source from an HP 8970B Noise Figure
Meter. To test the NF of the USRP, I connect the head to the USRP inpu
s chip does have an integrated LNA. Perhaps
> there's some sort of mismatch between your DUTs and this integrated LNA at
> <1 GHz?
>
> ADI publishes the RX S-parameters:
> https://ez.analog.com/thread/41208#137929
>
> -Robin
>
> On Thu, Feb 1, 2018 at
100AHF (RF1)
>
> On Thu, Feb 1, 2018 at 5:45 PM, Ron Economos via USRP-users <
> usrp-users@lists.ettus.com> wrote:
>
>> There's also a balun on the AD9361 input. Unfortunately, the balun part
>> number for the low frequency path is not on the schematic.
>>
&g
Economos via USRP-users <
>> usrp-users@lists.ettus.com> wrote:
>>
>>> There's also a balun on the AD9361 input. Unfortunately, the balun part
>>> number for the low frequency path is not on the schematic.
>>>
>>> Ron
>>> On 02/01/2018
r to the noise figure?
>
> Dave
>
>
>
> On Sat, Feb 3, 2018 at 10:41 AM, Dan CaJacob via USRP-users
> wrote:
> > I saw no improvement when including a 3dB 50 Ohm attenuator as part of
> the
> > B200 NF meter. I guess I could try higher attenuator values.
> >
I seem to recall that the 8-bit OTW format isn't implemented for RFNoC
yet... I could use that too.
On Mon, Mar 19, 2018 at 9:07 PM Adam Parower via USRP-users <
usrp-users@lists.ettus.com> wrote:
> Hello everyone,
>
>
> I am trying to figure out how to receive complex 8-bit integer samples
> fro
Without looking at the schematic, I'd guess that the difference is in the
implementation of the PLLs for tracking.
On Mon, Jun 25, 2018 at 11:21 AM Chintan Patel via USRP-users <
usrp-users@lists.ettus.com> wrote:
> Hi Marcus,
>
> Two follow-up questions related to B205/B210 synchronization.
>
>
Just speculating, but I wonder if what you're seeing is a result of
quantization error...
On Mon, Jun 25, 2018 at 11:55 PM Farhad via USRP-users <
usrp-users@lists.ettus.com> wrote:
> Thanks Ian for your answer; but my main question still remains unanswered
> which is why with different wire form
I think what would be more useful is a low-end USRP (low price like B200)
that is RFNOC-capable. I guess that might be something like an E310 in a
white case?
On Fri, Jun 29, 2018 at 9:12 AM GhostOp14 via USRP-users <
usrp-users@lists.ettus.com> wrote:
> I second RFNoC for the B series would be g
What I meant and didn't explain well enough is a potential new Ettus
product would be a Zynq-based B2X0 clone. That would be RFNOC-capable.
On Fri, Jun 29, 2018 at 2:32 PM Ian Buckley via USRP-users <
usrp-users@lists.ettus.com> wrote:
> Er no.
>
> B200 has approximately the same number of FP
I am not an FPGA or Vivado expert, but I tried to do the same thing. I
believe Vivado is limited to 4 cores, so sadly, it seems like your best bet
is to get a quad-core with the fastest clock you can find. I think AWS just
released a "frequency-optimized" instance family. Maybe take a look at that.
GPS doesn't like to go back in time. You probably need to reset the almanac
and a reboot is doing that.
On Tue, Apr 30, 2019, 9:53 AM Jason Matusiak via USRP-users <
usrp-users@lists.ettus.com> wrote:
> I've seen this a few times, but I cannot seem to lock it down to any
> particular reason. Whi
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