[mythtvnz] Have I got a dodgy DVB-T card?

[James Booth]

Well something's not right. I have two cards in the box, device 0 is a DVB-S 
card, device 1 is the DVB-T card. I'm using the -c option to specify which 
card to use, but no matter what I specify it keeps trying to use the DVB-S 
card. Any suggestions?

And no, as far as I know the HVR-1200 does not have an LNA.

On Saturday 11 April 2009 20:33:33 Steven Ellis wrote:
> On 11/04/2009, at 5:40 PM, James Booth wrote:
> > I've been playing around with VDPAU and Freeview HD for a week or so
> > now, and I am starting to come to the conclusion that something is
> > very wrong with my system.
> > Initially I had all channels working, but TV3/4 were rough, and TVNZ
> > channels could sometimes be a problem. I was focused on vdpau setup
> > etc and assumed that the various error messages and performance
> > issues I was getting related to problems with this. Indeed, with a
> > bit of playing around things semed to get almost 'good'. However,
> > after a week I have noticed the following:
> > 1) Signal strength is always strong, but S/N is sometimes stable but
> > other times all over the show.
> > 2) Running a full scan of the transports is very hit-and-miss.
> > Sometimes it will pick up everything, other times it will only pick
> > up one transport.
> > 3) Running a transport scan manually specifying the frequency will
> > get a result. But if I then scan the other transports in the same
> > way I get the same set of channels for each transport, as if the
> > card has not actually switched frequencies.
> > 4) Once all the channels are configured, often they will not tune
> > properly (only get a partial lock in Live TV). If I go back, delete,
> > and re-scan they will often then work perfectly.
> > 5) It may be just coincidence, but it seems that if I get the TVNZ
> > multiplex working the Kordia multiplex will not work, and vice versa.
> > 6) A full scan tends to produce a number of extra transport listings
> > with a frequency of zero.
> > I am using a Hauppauge HVR-1200. Can anyone suggest what would
> > produce the above other than a dicky DVB-T card? I have a new,
> > professionally installed aerial with masthead amp, so I am working
> > on the assumption there is nothing wrong with that end of things.
> > _______________________________________________
> > mythtvnz mailin
>
> Try running dvbtune against the various multiplexes and post your
> output. Here's my values which are pretty stable
>
> mythtv at mythtv:~/dvb/dtt$ dvbtune -m 666000000
> Signal=38293, Verror=0, SNR=65535dB, BlockErrors=0, ()
> Signal=38293, Verror=0, SNR=65535dB, BlockErrors=0, ()
> Signal=38293, Verror=0, SNR=65535dB, BlockErrors=0, ()
>
> mythtv at mythtv:~/dvb/dtt$ dvbtune -m 538000000
> Signal=38293, Verror=0, SNR=65535dB, BlockErrors=0, ()
> Signal=38293, Verror=0, SNR=65535dB, BlockErrors=0, ()
> Signal=38293, Verror=0, SNR=65535dB, BlockErrors=0, ()
> Signal=38293, Verror=0, SNR=65535dB, BlockErrors=0, ()
> Signal=38293, Verror=0, SNR=65535dB, BlockErrors=0, ()
>
> mythtv at mythtv:~/dvb/dtt$ dvbtune -m 570000000
> Signal=38293, Verror=0, SNR=65535dB, BlockErrors=0, ()
> Signal=38293, Verror=0, SNR=65535dB, BlockErrors=0, ()
> Signal=38293, Verror=0, SNR=65535dB, BlockErrors=0, ()
> Signal=38293, Verror=0, SNR=65535dB, BlockErrors=0, ()
>
> Re-check a couple of times to see if after tuning one multiplex
> another multiplex stops working.
>
> Also does the HVR-1200 have a LNA (Low noise amp) like the Nova-T 500?
>
> Steve
>
>
>
>
> Steven Ellis - Technical Director
> OpenMedia Limited
> email   - steven at openmedia.co.nz
> website - http://www.openmedia.co.nz

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