I have put it all here, flow graphs and screenshots of the flow graphs: http://dk5ras.dyndns.org/tmp/DVB/
This way we can keep it on the list without sending attachments. They were taken from the VM container before all the upgrades were made, but I did not change anything when upgrading. Ralph. -----Original Message----- From: Ian Buckley [mailto:[email protected]] Sent: Friday, April 17, 2015 19:25 To: Ralph A. Schmid, dk5ras Cc: 'Martin Braun'; [email protected]; 'GNU Radio Discussion List' Subject: Re: [Discuss-gnuradio] New UHD seems to break a lot... Great Ralph, thats a big help. Can you send me your exact flow graph used to generate these 2 plots off list please. I want to re run this scenario and see your exact configuration. Thanks -Ian On Apr 17, 2015, at 10:00 AM, "Ralph A. Schmid, dk5ras" <[email protected]> wrote: > OK, here we go. The hotel TV was dvb-c only, so I had to do the tests > back at home. > > I took my perfectly working Kubuntu 14.04 64 bit VM container together > with my B210, made a copy and updated this one, first I made a git > pull to get latest master, built it, rebuilt gnuradio, rebuilt > gr-dvbt, updated the FPGA images, and everything still was fine. The chosen dvb-t bandwidth is 8 MHz. > > Then I changed to 003_008_003_rc1, did the same procedure, fired up > grc, and the signal was not decodable both with a dvb-t PC receiver > and with an dvb-x analyzer. The analyzer saw the RF level, but no > data, no constellation, nothing, it looked to him like interference. > > When you have a look at the two "uhd" screenshots here > http://dk5ras.dyndns.org/tmp/DVB/ made with my spectrum analyzer then > you will find that RC1 produces a somehow narrower signal, so it > really looks something gets cut at the ends with all the filtering and DSP stuff. > Adjusting the channel bandwidth in the uhd sink block from 0 to a > sensible value changes nothing. > > Btw., the dvb-t2 package behaves identical. > > Ralph. > > > -----Original Message----- > From: Martin Braun [mailto:[email protected]] > Sent: Wednesday, April 15, 2015 21:14 > To: Ralph A. Schmid, dk5ras; [email protected]; 'GNU Radio > Discussion List' > Subject: Re: [Discuss-gnuradio] New UHD seems to break a lot... > > master works, but RC1 does not? Huh, I'm confused now. Can you give > some detail on what's going on, so we can try and reproduce this? > > Thanks, > Martin > > On 15.04.2015 12:52, Ralph A. Schmid, dk5ras wrote: >> RC1, master seems to work. >> >> Ralph. >> >> -----Original Message----- >> From: Martin Braun [mailto:[email protected]] >> Sent: Wednesday, April 15, 2015 15:44 >> To: Ralph A. Schmid, dk5ras; [email protected]; 'GNU Radio >> Discussion List' >> Subject: Re: [Discuss-gnuradio] New UHD seems to break a lot... >> >> Thanks, Ralph. Just to clarify: When you say 'New UHD', do you mean >> 3.8.3-RC1, or latest master? >> >> Martin >> >> On 15.04.2015 08:40, Ralph A. Schmid, dk5ras wrote: >>> It is a B210, but as a note, due to the up to now missing FPGA >>> images I used 003.008.003-RC1, not the latest master. Still I had no >>> access to a spectrum and DVB-T analyzer, so I have no idea what is >>> happening, I just can confirm that RF is transmitted, and the >>> receiver doesn't get a picture, while with the snapshot of the same >>> VM before the upgrade >> is received without problems. >>> I will know more in about three hours. >>> >>> Ralph. >>> >>>> -----Original Message----- >>>> From: Martin Braun [mailto:[email protected]] >>>> Sent: Wednesday, April 15, 2015 3:15 PM >>>> To: Ralph A. Schmid, dk5ras; [email protected]; 'GNU Radio >>>> Discussion List' >>>> Subject: Re: [Discuss-gnuradio] New UHD seems to break a lot... >>>> >>>> On 15.04.2015 06:20, Ralph A. Schmid, dk5ras wrote: >>>>> Hi, >>>>> >>>>> Not only OpenBTS is affected, also gr-dvbt/t2 do not work any more >>>>> with latest uhd. A quick check during lunch break showed, the >>>>> produced output is not decodable any more. I will take a closer >>>>> look this evening at home, where I have more and better equipment. >>>> >>>> Ralph, >>>> >>>> which device is this on? >>>> >>>> Thanks, >>>> Martin >>> >> >> > > _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
