Hi all, I have discussed with the people involved with Hauppauge at DiBcom and wanted to know the problem.
They explained me, that the actual problem/mistake is the broadcaster: They are using SFNs (single-frequency network, a DVB-T mux is transmitted by several, geographically different, transmitters) and each transmitter has its own cell-id in the TPS. As the channels are the same, the cell-id should be the same as well. I have the register settings for the dib3000p and dib7000p (no rev-eng necessary) which disable some algos to work-around that. However I would like to make that a module-load option, because here in France and afaik in Berlin, Germany, the SFNs are OK and disable the algos may cost other performance problems. I will try to prepare a patch for that as soon as I can. Patrick. On Tue, 10 Apr 2007, Matt Doran wrote: > Hi all, > > I've been using the Nova-T 500 PCI card and I'm using the Ubuntu 2.6.20 > kernel. I and others in Melbourne, Australia have been having reception > problems on a couple of channels. The problem is not related to signal > strength/quality, but region specific. The Windows Media Center community in > Australia were also having the same reception problems (see very long thread > <http://www.xpmediacentre.com.au/community/tuners-mce/12244-hauppage-nova-t-500-driver-bug-20.html#post120121>). > This community worked with the Australian distributer (New Magic), who worked > closely with Hauppauge to debug/fix the problem. After a couple of months > they got a fix. > > Apparently the problem was with the dib0700 chipset. So this might affect > more than just this card. Here's the quote: > > "For those interested the issue actually had nothing to do with > Hauppauge, but rather was a chipset issue which we have identified > in other tuner and set-top products. Because the issue is unique to > only small parts of Australia, many users and manufacturers write > the symptoms off as a reception problem." > > > The update hasn't been released publicly yet, but is available upon request > from New Magic (see note on this page > <http://www.newmagic.com.au/support/Hauppauge_Vista_Drivers.html>). Any one > interested can also email me off list, and I'd be happy to send it through. > The Windows instructions for installing the fix are: > > * Install the latest drivers from here: > http://www.newmagic.com.au/support/Hauppauge_Vista_Drivers.html > * Copy the updated file "hcw99bda.sys" into the > C:\windows\system32\drivers into the driver directory. > * Restart the system. > > Hopefully this is just a firmware fix, or something easy to reverse engineer. > ;) > > Anyone know if "hcw99bda.sys" contains firmware? And how to extract it? > > Let me know if there is anything I can do to help. > > Regards, > Matt Doran > > _______________________________________________ > linux-dvb mailing list > linux-dvb@linuxtv.org > http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb > _______________________________________________ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
