Yes, it does appear to show something happening on terrestrial, although what's shown in the video was very short. What I saw was a barscan and extremely low levels.
Back to the satellite, it may well be a meter power fault. Line power isn't required in terrestrial mode unless you are testing the meter powering a Mha - mast head amplifier.
Get yourself an LNB and a short coax extension. Plug into the meter and select a sat plan; any plan. If you have no LNb line power current flow and you are sure the fly lead and connections are ok, return the meter faulty.