Re: [USRP-users] Transmit underruns

2021-01-05 Thread Ron Economos via USRP-users
Here's an ssb flow graph that's known to work. You can select the sideband with the default option of the QT GUI Chooser block before you start the flow graph (you can't change filter taps on the fly). The test file is here. http://www.w6rz.net/ssbaudio.wav Ron On 1/5/21 15:29, Barry Duggan

[USRP-users] Transmit underruns

2021-01-05 Thread Barry Duggan via USRP-users
Ubuntu 20.10 GRC 3.9.0.RC0 UHD 4.0 B200mini USRP_ssb_xmt.grc - https://pastebin.com/ypyERUGE I have experimented with various combinations of send_buff_size and send_frame_size but continue to get underruns while transmitting. I've also tried setting the Audio Source 'OK to Block' to 'Yes' and

[USRP-users] Testing single RFNoC block produces out-of-sequence (S) errors

2021-01-05 Thread Rob Kossler via USRP-users
Hi, I created a custom pulse-detector block which attempts to pass/discard samples based upon an instantaneous power estimate. Each set of consecutively passed samples constitutes a "burst" (i.e. the EOB is set on the TLAST corresponding to the final passed sample of the burst). A burst can have a

Re: [USRP-users] rfNoc Replay Benchmark with N321

2021-01-05 Thread Rob Kossler via USRP-users
Hi Dylan, Just to confirm that you are using UHD 4.0? If so, then it should work. But, if you are using UHD3.x, I think that the replay block cannot provide 250 MS/s on both channels. Rob On Tue, Jan 5, 2021 at 1:59 AM Jonathon Pendlum via USRP-users < usrp-users@lists.ettus.com> wrote: > Hi Dyl