From DBSTalk.com
To put it bluntly, an unacceptable percentage of HDDVR installs/upgrades have needed multiple truck rolls due to signal level issues. Not equipment issues. The fault for these multiple truck rolls can only fall on one place. The tech. Either (s)he didn’t properly aim the dish, aimed it into trees, wrong switch, or old/bad cabling.
-snip-
Once activated, the box will run some internal self-tests on the signal levels. If the test fails, there will be an on screen display stating that the IV Test failed (IV = Installation Verification).
It failed, now what? Now the tech has a chance to tweak the dish, put in the proper switch, etc. Whatever needs to be done to get it to pass. Once it passes, life is good and everyone enjoys HD.
If true, this is a good first step but I don’t think it would have caught our problem (1 and 2) where the installation tech as well as the follow up guy did a half-ass job with the mounting and didn’t install all of the required hardware. I do applaud DirecTV for adding this feature because it should eliminate some of the installation problems I’ve read about.




