Re: [USRP-users] E310 not locking on GPS

2019-05-02 Thread Dan CaJacob via USRP-users
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.

Re: [USRP-users] Any tips to speed up X310 Vivado build time?

2018-07-24 Thread Dan CaJacob via USRP-users
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

Re: [USRP-users] RFNoC On B210

2018-06-29 Thread Dan CaJacob via USRP-users
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

Re: [USRP-users] RFNoC On B210

2018-06-29 Thread Dan CaJacob via USRP-users
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

Re: [USRP-users] SC8 Wireformat

2018-06-25 Thread Dan CaJacob via USRP-users
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

Re: [USRP-users] Synchronizing multiple B205 mini radios

2018-06-25 Thread Dan CaJacob via USRP-users
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. > >

Re: [USRP-users] Streaming 8-bit (sc8) samples from RFNoC

2018-03-19 Thread Dan CaJacob via USRP-users
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 >

Re: [USRP-users] B200 Noise Figure Meter

2018-02-03 Thread Dan CaJacob via USRP-users
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. >>> >>> Ron >>>

Re: [USRP-users] B200 Noise Figure Meter

2018-02-01 Thread Dan CaJacob via USRP-users
F (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. >> >> Ron

Re: [USRP-users] B200 Noise Figure Meter

2018-02-01 Thread Dan CaJacob via USRP-users
; integrated transceiver. This 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, 2

Re: [USRP-users] Unicast messaging via GNURadio

2017-12-30 Thread Dan CaJacob via USRP-users
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

Re: [USRP-users] TX power levels. Long term exposure.

2017-11-06 Thread Dan CaJacob via USRP-users
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 >

Re: [USRP-users] 2011 Matt's Talk Materials

2017-10-16 Thread Dan CaJacob via USRP-users
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. > >

Re: [USRP-users] UHD dropping samples running on Debian 9

2017-09-08 Thread Dan CaJacob via USRP-users
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

Re: [USRP-users] Reducing USB Latency

2017-08-14 Thread Dan CaJacob via USRP-users
etty 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, Dan CaJacob via USRP-user

[USRP-users] Reducing USB Latency

2017-08-05 Thread Dan CaJacob via USRP-users
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

Re: [USRP-users] Redhawk SDR

2017-07-16 Thread Dan CaJacob via USRP-users
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

Re: [USRP-users] Input power limit for B2x0 series

2017-07-12 Thread Dan CaJacob via USRP-users
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

Re: [USRP-users] Input power limit for B2x0 series

2017-07-09 Thread Dan CaJacob via USRP-users
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 <

Re: [USRP-users] Input power limit for B2x0 series

2017-07-08 Thread Dan CaJacob via USRP-users
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