[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] 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] GNU Radio UHD Blocks Resolution

2020-02-19 Thread Alvaro Pendas via USRP-users
Hello, I am using GNU Radio and the USRP B200. I have noticed that for the GNU block UHD: USRP Sink, the values you pass to the block must be in the range 0 to 1. I guess that means if you do not want to lose resolution you must ensure that you use the full range, that is to say, your minimum is 0

Re: [USRP-users] GNU Radio UHD Blocks Resolution

2020-02-19 Thread Marcus D. Leech via USRP-users
On 02/19/2020 12:01 PM, Alvaro Pendas via USRP-users wrote: Hello, I am using GNU Radio and the USRP B200. I have noticed that for the GNU block UHD: USRP Sink, the values you pass to the block must be in the range 0 to 1. I guess that means if you do not want to lose resolution you must ensur

Re: [USRP-users] GNU Radio UHD Blocks Resolution

2020-02-19 Thread Alvaro Pendas via USRP-users
Marcus thank your for your answer, First of all, you are right, the range is -1 to 1 (instead of 0 to 1 as I said before). So, for example, in the receiving part, the values you get out of the UHD Source have a linear relationship with the voltage of the analog signal, but I understand there is no

Re: [USRP-users] GNU Radio UHD Blocks Resolution

2020-02-19 Thread Marcus D Leech via USRP-users
Indeed. You’d have to use an external calibration source at several places over your parameter space (frequency gain sample rate) Sent from my iPhone > On Feb 19, 2020, at 1:54 PM, Alvaro Pendas wrote: > >  > Marcus thank your for your answer, > > First of all, you are right, the range is -1

Re: [USRP-users] [Non-DoD Source] Re: RFNOC: 2 input/2 output block, synchronizing their outputs to GNURadio host

2020-02-19 Thread Payne, William Andrew (Andrew) CIV USN NSWC CD CRANE ID (USA) via USRP-users
Hello Jonathan, Fortunately, a lot of progress has been made since you mentioned some ideas for me, I was just hesitating to reply until I got stuck again. I have been running on an e310 a 2-stream custom noc_block with axi wrappers set to simple mode successfully for the past few days, pro