Originally Posted by Invader3
Hey all. This may sound like a vague question, but I'm a Charter subscriber near Madison, WI. I feel like lately the picture quality of some of the HD channels has been getting worse. Some of the channels seem to look a bit more "foggy" than in the past, and I notice a decent amount of pixelation in fast moving scenes. I've also been getting a lot of audio drop outs, particularly on the network HD stations (NBC, CBS, etc). I am sure it is not my TV or AV receiver, because I don't get these issues with my PS3 or other sources. I have one of the older Motorola HD-DVR boxes. Could this possibly be the issue? I haven't changed any settings, and my TV is a Pioneer Kuro 5020, only about a year old. Appreciate any help or advice.
The Motorola stbs have a diagnostics mode that will allow you to view a number of signal quality parameters that may prove useful in determining the source of your problem. Inadequate signal strength into the stb would be the most likely possibility. Check out, How_to_use_a_Motorola_DVR / How_To_Check_Your_Incoming_Signal_Strength
If the d04 and d06 pages indicate GOOD for the channel in question and no/very few errors are clocking in, then your problem is not with signal strength.
Poor picture quality such as you stated can also be the result of the unfortunately very common practice of cramming 3 or more HD channels onto a 6Mhz QAM carrier, which reduces the available bandwidth for each channel to an inadequate value. This practice results in degradation of the video during fast motion and scene changes, in particular. I believe the d06 diag screen indicates the QAM carrier for the selected channel. If you go through your HD lineup, you can determine which, and how many, HD channels are assigned to which carriers.