[mythtv-users] Problem with tuning DVB card - tzap, mplayer ok mythtv not

[David Watkins]

On 23/10/05, Simon Allcorn <simon.allcorn at gmail.com> wrote:
> Hi,
>
> I'm having trouble to get myth-tv to tune into a transport stream with
> my DVB card (nova-t). If I use mythtv-setup and select Channel
> editor/Scan for channels/Full scan I get the following:
>
> ...
> 2005-10-23 14:39:07.661 DVB#0 DVB SI Table Parser Started
> 2005-10-23 14:39:07.662 DVB#0 Using DVB card 0, with frontend LSI L64781 DVB-T.
> 2005-10-23 14:39:07.686 DVB#0 DVB Signal Monitor Starting
> 2005-10-23 14:39:08.728 DVB#0 DVB signal f0f | snr  0 | ber ffff | unc    0
> ...
> 2005-10-23 14:39:40.498 DVB#0 DVB signal e0e | snr  0 | ber ffff | unc    0
> 2005-10-23 14:39:41.477 DVB#0 DVB signal f0f | snr  0 | ber ffff | unc    0
> 2005-10-23 14:39:42.097 DVB#0 WARNING - Status: NO LOCK!
>
> Which suggests that the signal strength is too weak, however both
> mplayer and tzap tune and work fine - for every transport ! (see
> below)
>
> So I'm a little stumpped - I Can use my DVB card for all channels /
> transports but myth-tv can't !
>
> help ! - has anyone got any idea what's happening here ?
>
> Cheers

I've no idea what your problem is but I'm using a nova-t on the
Crystal Palace transmitter so you could check that you're using the
same mythtv scan parameters that worked for me.  I used:

freq                 505833330
B/W                8MHz
Inversion          Auto
Constellation    QAM 16
LP Coderate     3/4
HP Coderate    3/4
Trans Mode      2K
Guard Interval   1/32
Hierarchy         None

I got these from tzap and, as I say, they worked for me.

Good Luck.