On Sat, 2005-09-10 at 03:53 +0200, Kenneth Aafløy wrote: > Lørdag 10 september 2005 03:40, skrev John P Poet: > > Playing with azap, I have seen it take up to 20 seconds to get a lock > > on that station (KOB-DT 4-1 or 26-3). > > > > Once it gets a lock, it holds it. Once it gets a lock, I can stop > > azap and restart it, and it immediately gets a lock. > > It could be something related to zig-zag scanning, if atsc frontends > permit that, since if you already have a lock it won't do it. > It could also be related to an internal scanning routine (they do exist) > which is not set up properly. This would be my guess, the frequency is far enough off that the driver/hardware has to hunt for it.
I would try adjusting the frequency in 100Mhz increments in each direction until azap can no longer find the channel at all. Make sure you tune to a completely different channel between each try. Then pick a frequency in the center of the range that works at all. I've talked to John Pullan about adding something like this to the setup program as an "optimize frequency of each transport" process. Though we would probably use a binary search in the range on each side of the center frequency and then scan that range at regular intervals, with time to tune as used to shape the response curve estimate. With a lookup table to avoid redundant tunes of course. -- Daniel _______________________________________________ mythtv-dev mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev
