[USRP-users] B210 drops one sample every 2^32 samples !

2020-11-06 Thread JM Friedt via USRP-users
While analyzing GPS timing capabilities of gnss-sdr as described at https://github.com/gnss-sdr/gnss-sdr/issues/442 we have become convinced that the B210 transferring data using libuhd 3.15 drops one samples every 2^32 (i.e one sample every 4294967296). This conclusion was reached by changing t

Re: [USRP-users] RFNoC Fosphor error

2020-11-06 Thread Robert Wilson via USRP-users
Hi Jonathon, I've reduced both with no change. Ben On Wed, Nov 4, 2020 at 1:59 PM Jonathon Pendlum wrote: > Hi Robert, > > Try using the maximum MTU size supported. Also, try reducing the FFT size > and SPP to 512. > > Jonathon > > On Wed, Nov 4, 2020 at 8:45 AM Robert Wilson > wrote: > >>

Re: [USRP-users] B210 drops one sample every 2^32 samples !

2020-11-06 Thread Marcus D Leech via USRP-users
Do you see the same thing on other platforms? What about newer/older UHD versions? Sent from my iPhone > On Nov 6, 2020, at 5:29 AM, JM Friedt via USRP-users > wrote: > > While analyzing GPS timing capabilities of gnss-sdr as described at > https://github.com/gnss-sdr/gnss-sdr/issues/442 > w

Re: [USRP-users] B210 drops one sample every 2^32 samples !

2020-11-06 Thread JM Friedt via USRP-users
I was waiting to confirm measurements: * I confirm libuhd 3.15 running the X310 will NOT display the same effect * I confirm libuhd 4 DOES display the same effect on the B210. I can provide the charts which I did not upload on the gnss-sdr github issue as demonstration of these measurements. Tha

Re: [USRP-users] B210 drops one sample every 2^32 samples !

2020-11-06 Thread Marcus D Leech via USRP-users
Thanks, Jean-Michel. Sent from my iPhone > On Nov 6, 2020, at 1:24 PM, jeanmichel.fri...@femto-st.fr wrote: > > I was waiting to confirm measurements: > * I confirm libuhd 3.15 running the X310 will NOT display the same effect > * I confirm libuhd 4 DOES display the same effect on the B210.

[USRP-users] E310 FPGA Development

2020-11-06 Thread Mike via USRP-users
Hi all - just joined today as I have recently started using the E310. My goal is to get a customized FPGA build running on the E310. Using the various application notes on the Ettus site I have been able to install (manually with source) UHD, GNU Radio, gr-ettus. I've also downloaded the SDK a

Re: [USRP-users] N320 inverted spectrum when tuned below 450 MHz

2020-11-06 Thread Marcus D Leech via USRP-users
R&D did some testing and indeed at least in UHD 4.0 the spectrum is inverted. Hopefully a fix will be available soon now that it is confirmed. Sent from my iPhone > On Nov 3, 2020, at 3:27 PM, Marcus D. Leech wrote: > > On 11/03/2020 02:54 PM, Jason Roehm via USRP-users wrote: >> >>> On 10