[linux-dvb] Nova-T 500 windows driver update fixes reception problems
matt.doran at papercut.biz
Mon Jun 4 13:47:20 CEST 2007
I haven't seen you on the lists in quite a while. I'm still having
problems with some channels with this card in Melbourne, Australia, and
these changes should improve this.
Are you going to get some time to look into this soon? Is there
anything I can do to help? If you give me an overview of the changes I
could try to develop a patch for this.
Patrick Boettcher wrote:
> 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.
> 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
>> 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:
>> * 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.
>> Matt Doran
>> linux-dvb mailing list
>> linux-dvb at linuxtv.org
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