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<blockquote data-quote="jonesdb" data-source="post: 1088474" data-attributes="member: 64597">You are quite correct. I have misinterpreted the scan reports I was seeing.&nbsp; My cable channels have all been mapped to all 6 Ceton tuners right from the beginning..&nbsp; My SDT/VCT timeout is set to 90 seconds.&nbsp; My error would have been in interpreting the changes+new channels reported when I did a re-scan on a second tuner immediately after scanning a single tuner.&nbsp; Most, but not all of the time the two reports are identical.&nbsp; (Sometimes it reports more or fewer new channels, but the total channels between new and changed remains constant.)The problem appears to be that 'new' channels aren't really 'new' all the time.&nbsp; I did a lot of channel clean-up/deletion today and did a rescan.&nbsp; The report was 75 'new' channels (500+ updates).&nbsp; When I dug into the 'new' channels I found only 3 channels that were actually new.&nbsp; The other 72 new channels had the same name (programing) as previous to the new scan, but the 'Service ID' was the only thing that had actually changed most of the time.&nbsp; In the past, when mapped to the tuners I couldn't identify the old from the new as I had a mix of channels with and without group assignments.&nbsp; This time everything that had been previously mapped had a group assignment already so the difference was easy to see as the 'new' channels didn't have a group assignment.I don't know what the algorithm for determining 'new' vs 'update' looks like, but in my case 96% of what was marked as new in the re-scan was really just updated....a pain, as then I needed to manually delete each of the old channels and re-assign the 'new' channels to their proper groups along with updating the guide stuff.I hope my experience and explanation helps someone else with similar issues.&nbsp; I think I can safely say that all of my problems were related to adding new channels that were really just updates, hence ending up trying to tune with old data that was useless when tuning.The whole thing with the authorization flag popping seems to have been a red herring.On another note, I'm using Win8 and wonder if anyone has experience using the Win8 beta drivers for the Ceton tuner.&nbsp; I've considered updating, but still a little gun shy at this point.</blockquote>

[QUOTE="jonesdb, post: 1088474, member: 64597"] You are quite correct. I have misinterpreted the scan reports I was seeing. My cable channels have all been mapped to all 6 Ceton tuners right from the beginning.. My SDT/VCT timeout is set to 90 seconds. My error would have been in interpreting the changes+new channels reported when I did a re-scan on a second tuner immediately after scanning a single tuner. Most, but not all of the time the two reports are identical. (Sometimes it reports more or fewer new channels, but the total channels between new and changed remains constant.) The problem appears to be that 'new' channels aren't really 'new' all the time. I did a lot of channel clean-up/deletion today and did a rescan. The report was 75 'new' channels (500+ updates). When I dug into the 'new' channels I found only 3 channels that were actually new. The other 72 new channels had the same name (programing) as previous to the new scan, but the 'Service ID' was the only thing that had actually changed most of the time. In the past, when mapped to the tuners I couldn't identify the old from the new as I had a mix of channels with and without group assignments. This time everything that had been previously mapped had a group assignment already so the difference was easy to see as the 'new' channels didn't have a group assignment. I don't know what the algorithm for determining 'new' vs 'update' looks like, but in my case 96% of what was marked as new in the re-scan was really just updated....a pain, as then I needed to manually delete each of the old channels and re-assign the 'new' channels to their proper groups along with updating the guide stuff. I hope my experience and explanation helps someone else with similar issues. I think I can safely say that all of my problems were related to adding new channels that were really just updates, hence ending up trying to tune with old data that was useless when tuning. The whole thing with the authorization flag popping seems to have been a red herring. On another note, I'm using Win8 and wonder if anyone has experience using the Win8 beta drivers for the Ceton tuner. I've considered updating, but still a little gun shy at this point. [/QUOTE]

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