[linux-dvb] Nova-T 500 windows driver update fixes reception
patrick.boettcher at desy.de
Wed Apr 11 10:05:43 CEST 2007
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
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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