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Re: [Discuss-gnuradio] New UHD seems to break a lot...
From: |
Ralph A. Schmid, dk5ras |
Subject: |
Re: [Discuss-gnuradio] New UHD seems to break a lot... |
Date: |
Fri, 17 Apr 2015 20:48:54 +0200 |
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:address@hidden
Sent: Friday, April 17, 2015 19:25
To: Ralph A. Schmid, dk5ras
Cc: 'Martin Braun'; address@hidden; '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" <address@hidden>
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:address@hidden
> Sent: Wednesday, April 15, 2015 21:14
> To: Ralph A. Schmid, dk5ras; address@hidden; '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:address@hidden
>> Sent: Wednesday, April 15, 2015 15:44
>> To: Ralph A. Schmid, dk5ras; address@hidden; '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:address@hidden
>>>> Sent: Wednesday, April 15, 2015 3:15 PM
>>>> To: Ralph A. Schmid, dk5ras; address@hidden; '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] New UHD seems to break a lot..., Ralph A. Schmid, dk5ras, 2015/04/15
- Re: [Discuss-gnuradio] New UHD seems to break a lot..., Martin Braun, 2015/04/15
- Re: [Discuss-gnuradio] New UHD seems to break a lot..., Ralph A. Schmid, dk5ras, 2015/04/15
- Re: [Discuss-gnuradio] New UHD seems to break a lot..., Martin Braun, 2015/04/15
- Re: [Discuss-gnuradio] New UHD seems to break a lot..., Ralph A. Schmid, dk5ras, 2015/04/15
- Re: [Discuss-gnuradio] New UHD seems to break a lot..., Martin Braun, 2015/04/15
- Re: [Discuss-gnuradio] New UHD seems to break a lot..., Ralph A. Schmid, dk5ras, 2015/04/16
- Re: [Discuss-gnuradio] New UHD seems to break a lot..., Ralph A. Schmid, dk5ras, 2015/04/17
- Re: [Discuss-gnuradio] New UHD seems to break a lot..., Ian Buckley, 2015/04/17
- Re: [Discuss-gnuradio] New UHD seems to break a lot...,
Ralph A. Schmid, dk5ras <=
- Re: [Discuss-gnuradio] New UHD seems to break a lot..., Ian Buckley, 2015/04/17
- Re: [Discuss-gnuradio] New UHD seems to break a lot..., Ralph A. Schmid, dk5ras, 2015/04/18
- Re: [Discuss-gnuradio] New UHD seems to break a lot..., Ian Buckley, 2015/04/20
- Re: [Discuss-gnuradio] New UHD seems to break a lot..., Ralph A. Schmid, dk5ras, 2015/04/20