Re: [USRP-users] Carrier frequency jumps on E310

2020-11-24 Thread Luke Whittlesey via USRP-users
uld say they are proportional to frequency. Attached is what it > >> looks like at 5GHz. There are jumps of 400Hz and 220Hz. > >> > >>> On Tue, Nov 24, 2020 at 11:50 AM Marcus D Leech > >>> wrote: > >>> > >>> Try at lower

Re: [USRP-users] Carrier frequency jumps on E310

2020-11-24 Thread Luke Whittlesey via USRP-users
ps the same or proportional > > to frequency? > > > > Sent from my iPhone > > > > > On Nov 24, 2020, at 11:27 AM, Luke Whittlesey via USRP-users > > > wrote: > > > > > > On the E310 I'm seeing discrete jumps in the carrier. The c

Re: [USRP-users] uhd_cal_rx_iq_balance

2020-11-05 Thread Luke Whittlesey via USRP-users
Does this IQ calibration function apply to the E310, or any of the AD936x based SDRs? On Thu, Nov 5, 2020 at 11:57 AM Marcus D Leech via USRP-users wrote: > > The Val routines use the serial number of the daughter card to index into the > database. It shouldn’t matter where the card is moved. >

Re: [USRP-users] C++ thread Priority.

2020-07-23 Thread Luke Whittlesey via USRP-users
You might try nice : https://en.wikipedia.org/wiki/Nice_%28Unix%29 On Thu, Jul 23, 2020 at 1:13 PM David Carsenat wrote: > > Many thanks but I am already in O3. > > Le jeu. 23 juil. 2020 à 15:46, Luke Whittlesey via USRP-users > a écrit : >> >> This is probably not

Re: [USRP-users] C++ thread Priority.

2020-07-23 Thread Luke Whittlesey via USRP-users
This is probably not the issue, but sometimes I forget to turn the compiler optimizations on and that can give you a little boost depending on the code. gcc -O2 ... On Wed, Jul 22, 2020 at 4:20 PM Marcus D. Leech via USRP-users wrote: > > On 07/22/2020 03:18 PM, Rob Kossler wrote: > > If you are

Re: [USRP-users] E310 and latest sdcard image

2020-02-19 Thread Luke Whittlesey via USRP-users
Never mind. I should have been using "speed grade 3" not 1 for my model of e310. For future googlers this page [2] talks about how to read the product number to determine the speed grade. [2] https://kb.ettus.com/Ettus_USRP_E300_Embedded_Family_Hardware_Resources#SD_Card_Images On Wed, Feb 19, 2

[USRP-users] E310 and latest sdcard image

2020-02-19 Thread Luke Whittlesey via USRP-users
Hello, I'm having trouble booting from the latest sdcard images for the e310. [1] I've tried a couple of different sd-cards, but consistently error out in uboot with the following error Copying FIT from SD to RAM... 5866988 bytes read in 338 ms (16.6 MiB/s) ## Loading kernel from FIT Image at

Re: [USRP-users] Plagued by sporadic TX underruns on some systems, B200

2019-05-02 Thread Luke Whittlesey via USRP-users
I've had similar issues on the e310 with similar sample rates. On the e310 no usb is involved. Unfortunately I have not been able to fully get rid of the underrun issues as well. So far I have tried: - separate threads with ping-pong buffers: this helped - linux real-time scheduling - increasing t

Re: [USRP-users] E312 wrong sample rate

2019-04-30 Thread Luke Whittlesey via USRP-users
> but there are diminishing returns True, it's only useful to the dynamic range of that 12-bit ADC. Is there a recommended minimum sample rate for the E310/12? Would this be dictated by the most narrow pre-selection filter? On Tue, Apr 30, 2019 at 11:50 AM Marcus D. Leech wrote: > On 04/30/2019

Re: [USRP-users] E312 wrong sample rate

2019-04-30 Thread Luke Whittlesey via USRP-users
Just my 2cents, but I think that sometimes running at a higher ADC sample rate and then digitally filtering may be desirable. I can't say anything specifically about this example with the E312 because I'm not familiar with the pre-selection filters and the analog filters in the AD9361, but a higher

[USRP-users] Block diagram of HDL on e310

2019-02-20 Thread Luke Whittlesey via USRP-users
Is there a block diagram of the hdl implemented on the e310? I'm trying to get a handle on what the e310 is doing, but reading the hdl directly is slow. I could probably use vivado to view the hierarchy of schematics/modules, but is there some higher level documentation available somewhere? Sorry

Re: [USRP-users] upgrading gcc on the E310

2018-11-03 Thread Luke Whittlesey via USRP-users
Thank you! I'll give the new image a try. I was struggling getting a newer version of gcc installed from source. I hadn't heard of bmaptool, so thanks for the introduction. Thanks, Luke On Fri, Nov 2, 2018 at 3:51 PM Philip Balister wrote: > On 11/01/2018 04:56 PM, Luke Whittl

[USRP-users] upgrading gcc on the E310

2018-11-01 Thread Luke Whittlesey via USRP-users
Hello, The e310 comes with an older version of gcc (4.9.2). Is there a recommended way to upgrade gcc? Thanks, Luke ___ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com