On 11/18/2007 10:34 AM, Luc Brosens wrote: > Hi, > > side note : > the problems in my previous post "KNC1 TV-Station S, revision 0x1894, doesn't tune", were related to the PCI-slots of the motherboard I used > rebuilt the machine around a new motherboard, both KNC1's are now recognized and able to tune > lesson learnt : check the hardware before complaining about the software ... > > next step is accessing the scrambled signals > > as I said, the cards scan OK and using "szap" I can tune to them : > mythtv@silverstar:~> szap -a 1 -c channels.conf VT4 > reading channels from file 'channels.conf' > zapping to 795 'VT4': > sat 0, frequency = 12669 MHz V, symbolrate 22000000, vpid = 0x03af, apid = 0x039b sid = 0x31e5 > using '/dev/dvb/adapter1/frontend0' and '/dev/dvb/adapter1/demux0' > status 05 | signal 9ffb | snr 21f6 | ber 0000ea08 | unc 00000000 | > status 1f | signal d430 | snr dad3 | ber 00000100 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d47e | snr dab5 | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d5b8 | snr dacd | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d458 | snr dac7 | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d5bc | snr daf7 | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d460 | snr da9a | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d47c | snr daac | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d46c | snr dac1 | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d465 | snr dabe | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d481 | snr dabb | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d46f | snr dab5 | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d43b | snr daa0 | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d468 | snr dabe | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d47e | snr daa6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d342 | snr dac1 | ber 00000000 | unc 00000000 | FE_HAS_LOCK > > mythtv@silverstar:~> szap -a 1 -c channels.conf VTM > reading channels from file 'channels.conf' > zapping to 793 'VTM': > sat 0, frequency = 12669 MHz V, symbolrate 22000000, vpid = 0x03ad, apid = 0x0399 sid = 0x31e3 > using '/dev/dvb/adapter1/frontend0' and '/dev/dvb/adapter1/demux0' > status 1f | signal d404 | snr b772 | ber 0000c000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d479 | snr da8b | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d5b7 | snr daac | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d5b6 | snr da97 | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d47c | snr daa0 | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d5bb | snr da70 | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d342 | snr da97 | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d480 | snr daa6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d340 | snr da97 | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d481 | snr da40 | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d47e | snr da6a | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d340 | snr da6d | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal d468 | snr da91 | ber 00000000 | unc 00000000 | FE_HAS_LOCK > > both VTM and VT4 are encrypted channels here, so no mpg-output at this time > > I have found one (1) encrypted channel that works using gnutv : > > mythtv@silverstar:~> gnutv -adapter 1 -channels channels.conf -out dvr VTM > Using frontend "ST STV0299 DVB-S", type DVB-S > status SCVYL | signal d47c | snr dac1 | ber 0000ff00 | unc 00000000 | FE_HAS_LOCK > CAM Application type: 01 > CAM Application manufacturer: 0100 > CAM Manufacturer code: 0000 > CAM Menu string: CANALDIGITAAL > CAM supports the following ca system ids: > 0x0100 > Received new PMT - sending to CAM... > mythtv@silverstar:~> > > using mplayer, I have a clear picture > this proves to me that descrambling works > > but I have yet to find another channel that works, even on the same transponder frequency none of the others work !? > > what's more, it looks like it's the CAM that's the cause of things : > > first, remove the CAM from the CI slot : > > mythtv@silverstar:~> gnutv -adapter 1 -channels channels.conf -out dvr VT4 > Using frontend "ST STV0299 DVB-S", type DVB-S > status SCVYL | signal d464 | snr da9a | ber 0000a700 | unc 00000000 | FE_HAS_LOCK > > the lock is immediate > > insert the CAM, same command : > > mythtv@silverstar:~> gnutv -adapter 1 -channels channels.conf -out dvr VT4 > Using frontend "ST STV0299 DVB-S", type DVB-S > CAM Application type: 0140 | snr 83c1 | ber 0000ff00 | unc 00000000 | > CAM Application manufacturer: 0100 > CAM Manufacturer code: 0000 > CAM Menu string: CANALDIGITAAL > CAM supports the following ca system ids:er 0000ff00 | unc 00000000 | > 0x0100 > mythtv@silverstar:~> c82e | snr a15e | ber 0000ff40 | unc 00000000 | > > so gnutv accesses the CAM, and the signal and SNR drop to unusable levels ? > > the same happens for unencrypted channels : the signal and SNR drop if a CAM is present and gnutv is used > > NO CAM : > mythtv@silverstar:~> gnutv -adapter 1 -channels channels.conf "BBC World" > Cannot open decoder; defaulting to dvr output > Using frontend "ST STV0299 DVB-S", type DVB-S > status SCVYL | signal ccf4 | snr d6b6 | ber 0000ff00 | unc 00000000 | FE_HAS_LOCK > > INSERT CAM : > mythtv@silverstar:~> gnutv -adapter 1 -channels channels.conf "BBC World" > Cannot open decoder; defaulting to dvr output > Using frontend "ST STV0299 DVB-S", type DVB-S > CAM Application type: 0156 | snr 81ed | ber 0000ff00 | unc 00000000 | > CAM Application manufacturer: 0100 > CAM Manufacturer code: 0000 > CAM Menu string: CANALDIGITAAL > CAM supports the following ca system ids:er 0000ff38 | unc 00000000 | > 0x0100 > mythtv@silverstar:~> bcc0 | snr a05f | ber 0000ff18 | unc 00000000 | > > > szap is not bothered by the presence of a CAM (because it doesn't access it ?), tuning works fine with and without one > > questions : > > why does inserting and accessing a CAM reduce the signal and SNR levels ? (even if no descrambling is needed, as for BBC World) > how can this be solved ? > anyone out there having the same problems ? > > thanks, > > Luc > > _______________________________________________ > linux-dvb mailing list > linux-dvb@xxxxxxxxxxx > http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb > Which motherboard do you have? And you've got a clean picture without blocks with the offical Dutch/Flemish Mediaguard CAM? You would be the first. (see http://linuxtv.org/wiki/index.php/KNC1_TV-Station_DVB-S ) Can you reproduce the descrambling, are you sure VTM was not temporarily unscrambled? P. _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
