Re: Pb with sound on SECAM-L channels solved ! | |
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Hello ! On Sun, Aug 01, 2004, hermann pitton wrote : > > 1. Why does this option "port2=0" solves my problem ? > > http://www.spinics.net/lists/vfl/msg09857.html > Seems that the decoding quality otherwise is such bad that the audiotrap > of the chip doesn't lock. That is what I saw last, when after testing on > Secam-L-Nicam without success you were moved to Pal-DK, but I also like > to know what happened in detail. (philips.com has a datasheet ...;) OK. This problem was not easy to solve, and I'm afraid other users will have the same problem. First, when I do a "modinfo tda9887", I don't see these options port1, port2, qss, etc... I had to look in the source code to discover them ! I think that the first step would be to make these options appear in "modinfo" with a small description. Second, as Eddy suggested, it would be better to add these hardware-specific tuner settings somewhere in the documentation. > > 2. Will it work with the option "port2=0" for the "tda9887" module on > > PAL channels with my KNC TV-Station DVR board ? > > Try it, But I don't have access to PAL TV signals, because I am in France ! > An attempt to add port2=0 to Secam-L defaults was nonsense, but > installing the card and only using v4lctl for settings shows PAL-BG A2 > sound is still fine and also radio with port2=0. (we also have "auto > mute fm = yes" now like DScaler) We can expect that switching between > Pal dual-FM and Pal Nicam also works then. OK, so I can be confident that it will also work with PAL TV signals with this option port2=0, right ? > p.s. hardware note: Found an EPCOS K3953D video- and a EPCOS K9456D > audiofilter -46DB on tuner=38. My "tda9887" (B2 230) has 38 pins > instead of 24. (next testing is yours ;) I opened up the tuner of my KNC DVR board : my tda9887 also has 38 pins, and the tuner has the same filters as you (EPCOS K3953D and EPCOS K9456D). -- Alexis -- Unsubscribe mailto:video4linux-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/video4linux-list
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