[mythtv] Ticket #1049: DVBSignalMonitor needs to be able to monitor NIT/SDT

Daniel Kristjansson danielk at cuymedia.net
Thu Jun 8 16:09:27 UTC 2006

On Thu, 2006-06-08 at 16:54 +0100, Allan Stirling wrote:
> I seem to remember that the 'actual' frequency tuned-to used 
> to be stored on a scan. I'm not too sure if that is present 
> any more from Daniel / Stuarta's -commits list comments.
Yep, this is still the case for cards that support it.

> If people are indeed seeing extreme drift, it would possibly 
> tend to be only in one direction. Maybe this is throwing 
> some people's ex-working setups off?
I don't think this is throwing anyone's current setups off.
But the concern is that if we disable the drivers' swzigzag,
which is throwing current setups off, then we will be hit by
multi-Mhz swings in frequency with cheap LNBs. Then we will
need to implement our own swzigzag ourselves.

If we do need to implement swzigzag, this is still an improvement.
Since we can delay this until after we think the rotor has finished
moving the dish, and we can use the PAT and SDT to verify that
any lock is indeed on the correct multiplex.

BTW Thanks for the real world data..

-- Daniel

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