Re: [USRP-users] tune speed ussue

2021-01-19 Thread David Evans via USRP-users
Hi all, I am not an expert on this, but recently speaking to someone a little more in the know than I... Marcus is right, also it is apparently possible to pre-calibrate in advance and save the calibration settings to registers on the AD9361, thus making the tune time constant. Just a thought,

Re: [USRP-users] Raspberry Pi 4 sampling Rate

2020-11-04 Thread David Evans via USRP-users
I too was able to sustain around 12Msps on an XU4+B200mini, and was also able to get OpenBTS to work. Marcus, hope it's OK to ask, but did you use a USB3 hub? When I tried it the XU4 was unable to supply enough current, causing the SDcard to get corrupted (I had a lot of fun with this!), the sol

Re: [USRP-users] Underruns causing USRP to stop transmitting and receiving

2020-10-21 Thread David Evans via USRP-users
I had a similar issue to this with 4.0.0 a couple of months ago, posted on this group and told I would have to wait for the next release where it would hopefully be fixed. So maybe it's still there, I had to revert to 3.9.7. The issue was with high rates (20M+ on my hardware) causing rx_samples

Re: [USRP-users] b200mini stops sampling

2020-09-12 Thread David Evans via USRP-users
git tag Ron On 9/11/20 10:38, Marcus D Leech via USRP-users wrote: That should be fine. GIT is arcane. Others have more facility with it than I. Sent from my iPhone On Sep 11, 2020, at 12:07 PM, David Evans via USRP-users wrote:  Thanks Marcus, Sorry,, I know this isn't the

Re: [USRP-users] b200mini stops sampling

2020-09-11 Thread David Evans via USRP-users
0/09/2020 16:43, Marcus D. Leech via USRP-users wrote: On 09/10/2020 08:55 AM, David Evans via USRP-users wrote: Hi, I have just installed the latest "master" branch of UHD (4.0.0.0). If an overrun occurs during sampling, sampling does not continue thereafter. I noticed this with uhd_ff

[USRP-users] b200mini stops sampling

2020-09-10 Thread David Evans via USRP-users
Hi, I have just installed the latest "master" branch of UHD (4.0.0.0). If an overrun occurs during sampling, sampling does not continue thereafter. I noticed this with uhd_fft, which hangs with rates over 8MHz, and also rx_samples_to_file: ./rx_samples_to_file --freq 9 --rate 4000