Re: [USRP-users] frequency shift of B210

On 07/20/2017 10:08 PM, john liu wrote: i am sorry. We generate a GFSK signal with B210 and received the signal with multiple cc1120.When frequency shift occurred,the cc1120 can not received the signal. Also, another b210 has been running for several days without such a jump phenomenon. So, s

Re: [USRP-users] frequency shift of B210

i am sorry. We generate a GFSK signal with B210 and received the signal with multiple cc1120.When frequency shift occurred,the cc1120 can not received the signal. Also, another b210 has been running for several days without such a jump phenomenon. On Fri, Jul 21, 2017 at 9:37 AM, Marcus D. Leech

Re: [USRP-users] frequency shift of B210

No i mean what were you measuring? Were you using an external signal generator and what were its specs? Sent from my iPhone > On Jul 20, 2017, at 9:09 PM, john liu wrote: > > HI Marcus, > internal　with TCXO. > >> On Thu, Jul 20, 2017 at 11:31 PM, Marcus D. Leech wrote: >>> On 07/20/2017 02

[USRP-users] Dual TwinRX in X310

This is not a question, but a note for others: I have two TwinRX boards in an X310. Connected using dual 10 GbE links to the PC. FPGA type XG is loaded. Both links get detected by uhd_usrp_probe. I was trying to stream all four channels at 100 Msps. My subdev is "A:0 A:1 B:0 B:1". I did no

Re: [USRP-users] frequency shift of B210

HI Marcus, internal with TCXO. On Thu, Jul 20, 2017 at 11:31 PM, Marcus D. Leech wrote: > On 07/20/2017 02:22 AM, john liu wrote: > > >> >> What was your tuned frequency in this case? > > Hi,Marcus, > > It is 433.05Mhz > > That's about 7PPM. > > What was your signal source? > > > > On Thu, Jul

Re: [USRP-users] X300 continuous overflow errors

Hello Nathan: You might to take a look at the fast-frequency hopping demo code, which does what you're doing, and uses the X300/X310 and TwinRX. Are you using the stock FPGA image, or did you modify the FPGA code and make a custom FPGA image? I would also suggest trying your program with UHD 3.1

Re: [USRP-users] x310 full duplex capabilities/quirks

As a follow up to this, I was successful in getting an example flowgraph working using the UHD USRP Sink/Src blocks with 2 channels each. I've attached the flow graph (note the blocks are disabled here) - on the hardware I hook up A: TX/RX to A: RX2 and B: TX/RX to B: RX2 and it works as expected.

Re: [USRP-users] Web server on E310

I wasn't aware of that code; it sounds useful but I don't see much documentation on it concerning the web interface. I was thinking about using apache2 as disk space isn't much of a concern for my application, or maybe Nginx as it seems better suited for embedded devices, but I'm really just lookin

Re: [USRP-users] frequency shift of B210

On 07/20/2017 02:22 AM, john liu wrote: What was your tuned frequency in this case? Hi,Marcus, It is 433.05Mhz That's about 7PPM. What was your signal source? On Thu, Jul 20, 2017 at 11:46 AM, john liu > wrote: Hi all, We used B210 with TCXO,an

[USRP-users] E310 setting bandwidth issue

Hi , I am reopening this issue as I have not still overcome or understood the problem. Let me first describe my application I have to collected data (type short, wirefmt sc16) at a particular center frequency at a sampling rate of 25 Msps and set the bandwidth to be 20 MHz and the master clock

Re: [USRP-users] Performance Data for TwinRX

We’ve done some rough calibration in the past to be able to map the data we captured back to dBm at the RX port, so I was hoping to see some numbers we could use for that. From: Neel Pandeya [mailto:neel.pand...@ettus.com] Sent: Wednesday, July 19, 2017 7:54 PM To: Perelman, Nathan Cc: usrp

[USRP-users] R: E310: a circular buffer to save rx samples to SD Card

Thank you Neel for asking. Now we moved to a different approach where we have been able to write acquired samples in real-time directly to an external USB-connected SSD disk. We are still trying to get the same result with a USB key. BR, Maurizio. Da: Neel Pandeya [mailto:neel.pand...@ettus.com]