How To Check Your Comcast HDTV Cable Signal Strength

Sometimes you may need to know what kind of signal you're getting to your Comcast CableBox, to help diagnose if you have some sort of problem. Maybe a loose cable, or whatnot. Here's how to do it.

Note: This is for the Comcast Digital HDTV Cable Box (Model DCH3200) (Fig-1). Most likely it will work on other models though.

I had the luxury a couple of days ago of doing this, and reading the manual that came with the cable box on how to program your TV and any auxillary device (that includes the codes needed to enter into it to match your other devices), it turned out that the manual was wrong.