[mythtv-users] Looking for HDTV Tuner Diagnostic Tips (AirStar-HD5000)

[Dale]

Hi Joel,

Thanks for sharing your ideas!

I do have an amplifier that TW installed and had the same thought as you.
So I removed the amp but had the same problem. No better or worse. My TW
digital box is on the amp as well with no issues. 

The thing is that SD digital comes through clean. Since it's all sitting in
an MPEG2 transport the only difference between the two is the data rate of
the stream. i.e., The demodulation is clean. When I watch digital on the
server box SD works perfectly and HD gets a bit jerky. Given all this I
think it points to my system. I just need to locate the bottleneck. Hence
the need for analysis tools of some sort.

Thanks again!
Dale
 
>Do not know if this helps, but I have noticed glitches in digital only
>channels after I added an amplified splitter. My first digital box from
>TW was working fine until I needed another TV connection. Not wanting to
>degrade the signal I bought the amp with extra outputs. Did not put all
>this together until I switched to Fios. Same story, they disconnected my
>amplified splitter and install a passive with only 4 connections. A week
>later I re-installed the amp to get the Mythbox on line again. Same
>problems are present in fast paced digital movies. My next step is to
>install another passive splitter to see if the problem disappears. There
>were some posts regarding tuner card sensitivity to high inputs, maybe a
>cheap attenuator is the answer. My other SD TVs do not have problems.