On Mon, 2009-12-21 at 15:09 -0500, Robert Longfield wrote: > Well it gets even better. > So on the weekend I was able to steal a few minutes to properly > trouble shoot the issue now that I know it was in the mythbuntu box. > As a long shot I pulled out the Promise Tech Ultra133 TX2 / ATA card I > am using for the backup drive. With this card removed the sync issue > went away, when I put the card back in the issue returned. Now this > card was in the slot right next to the PVR-150 card. I moved the > controller card as far away as I could get from the PVR-150 and the > sync issue was gone. > > So it would appear that the Promise Tech card was causing some EM > interference with the PVR-150 card. I will keep an eye on this to make > sure that this was indeed the issue. > > Does it seem reasonable that this card would kick out interference like this? Yes, it is plausible. Perhaps you may also wish to consider an external (USB connected) capture device. A PC can internally have many sources of square waves that have either fundamental or harmonic frequencies in UHF. The metal case of a PC can greatly reduce the EMI on outside of the case. Regards, Andy > -Rob > > On Fri, Dec 18, 2009 at 3:13 PM, Steven Toth <stoth@xxxxxxxxxxxxxx> wrote: > >> So it looks like the problem is restricted to my mythbuntu box. > > > > Congrats, that's better news. > > > > -- > > Steven Toth - Kernel Labs > > http://www.kernellabs.com -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
