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Re: Strong Artefacts - Questionable SNR and high BER

What type on LNB do you have ? I have a Quad output LNB and the isolation between the different "ports" is not good enough. If you have one receiver using one port, the other ports will get some "glitches" if you change polarization/LO etc... Hi BeMax Thanks for responding. I ha...
by dpdpkpcom
Wed Feb 19, 2014 8:57 pm
 
Forum: Linux
Topic: Strong Artefacts - Questionable SNR and high BER
Replies: 43
Views: 9670

Re: Strong Artefacts - Questionable SNR and high BER

Thanks for your help Constantine !!

Really appreciate it.

Is there a way of logging pcie data throughput / 6985 temperature ?

Anything that may aid in troubleshooting ?

Thanks

dp
by dpdpkpcom
Wed Feb 12, 2014 10:41 pm
 
Forum: Linux
Topic: Strong Artefacts - Questionable SNR and high BER
Replies: 43
Views: 9670

Re: Strong Artefacts - Questionable SNR and high BER

Oh dear, the problem persists. Watched the first program since new card recorded it. I should point out that I also reseated the pci-e 6985 card in a different pci slot (further away from the PSU) just to rule out another thing and the artefacts are still there, but only on HD channels. Attached is ...
by dpdpkpcom
Wed Feb 12, 2014 5:26 pm
 
Forum: Linux
Topic: Strong Artefacts - Questionable SNR and high BER
Replies: 43
Views: 9670

Re: Strong Artefacts - Questionable SNR and high BER

Forgot to say, it only seems an issue on BBC HD, ITV HD, basically any HD channel !
by dpdpkpcom
Sun Feb 09, 2014 1:03 am
 
Forum: Linux
Topic: Strong Artefacts - Questionable SNR and high BER
Replies: 43
Views: 9670

Re: Strong Artefacts - Questionable SNR and high BER

Here's another graph. This is the last 7 days. There's a noticeable spike (when I changed the TBS6985 card I assume) so before that is the old card, after that, is the new. And I've just watched the first recording and it went full of artefacts after about 5 minutes. It has since got past that and s...
by dpdpkpcom
Sun Feb 09, 2014 12:59 am
 
Forum: Linux
Topic: Strong Artefacts - Questionable SNR and high BER
Replies: 43
Views: 9670

Re: Strong Artefacts - Questionable SNR and high BER

Bugger. The replacement card doesn't make a difference :-( I'm suspecting a driver issue. The other thing that has changed (which I should have mentioned!!) is that I changed from ubuntu 12.04 to 13.10. So, different kernel and different mythtv version (was 0.25, but is now 0.27). Attached are the l...
by dpdpkpcom
Sun Feb 09, 2014 12:55 am
 
Forum: Linux
Topic: Strong Artefacts - Questionable SNR and high BER
Replies: 43
Views: 9670

Re: Strong Artefacts - Questionable SNR and high BER

Keeping the forum updated. The card arrived today from QuietPC.co.uk - thanks guys ! A noticeable improvement in the satellite snr ratios and definitely the Bit Error [Rate|Ratio]. See attached..... But, still not convinced it's as good as it can be. Will have to see if I get artefacts on the same s...
by dpdpkpcom
Fri Feb 07, 2014 12:21 am
 
Forum: Linux
Topic: Strong Artefacts - Questionable SNR and high BER
Replies: 43
Views: 9670

Re: Strong Artefacts - Questionable SNR and high BER

Just a quick note to keep this forum topic upto date with the latest. TBS have been great, offering to send a replacement on receipt of the faulty TBS6985. QuietPC.co.uk (who I purchased the card off) have been awesome. They're sending the replacement and on receipt I can send the faulty card, minim...
by dpdpkpcom
Wed Feb 05, 2014 6:48 pm
 
Forum: Linux
Topic: Strong Artefacts - Questionable SNR and high BER
Replies: 43
Views: 9670

Re: Strong Artefacts - Questionable SNR and high BER

Is this correct ? ie to have so many tbs modules loaded when it's a single tbs6985 card ? tbsfe 13023 4 tbs6985fe 22408 4 rc_tbs_nec 12502 0 saa716x_tbs_dvb 72249 0 tbs6982fe 22408 1 saa716x_tbs_dvb tbs6680fe 17791 1 saa716x_tbs_dvb tbs6923fe 22408 1 saa716x_tbs_dvb tbs6985se 17882 1 saa716x_tbs_dvb...
by dpdpkpcom
Mon Feb 03, 2014 12:01 am
 
Forum: Linux
Topic: Strong Artefacts - Questionable SNR and high BER
Replies: 43
Views: 9670

Re: Strong Artefacts - Questionable SNR and high BER

Just to rule out the linux tbs driver, I updated to the latest one (v140113). Still getting the errors in syslog.... Feb 2 13:06:18 mythtv kernel: [ 5.216566] TurboSight TBS 6985 Frontend Attaching... Feb 2 13:06:18 mythtv kernel: [ 5.299483] TurboSight TBS6985 DVB-S2 card port0 MAC=00:22:ab:90:37:5...
by dpdpkpcom
Sun Feb 02, 2014 10:51 pm
 
Forum: Linux
Topic: Strong Artefacts - Questionable SNR and high BER
Replies: 43
Views: 9670
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