I have quite a quandry going on in my head. We have three, new this summer, Vizio HDTV televisions with Integrated NTSC/ATSC/QAM HDTV Tuners. These are supposed to be digital, correct? We do not do satellite or cable TV, only normal over the air transmission. Our antennas are Winegard SquareShooter HDTv2s, Model SS-2000s. We are currently receiving digital reception from CBS and PBS, as well as our normal stations. Yet when our local stations offer the "test" to see if you are ready for the switch, all our TVs fail. I don't understand, and am hoping someone can shed some light on this silliness for me. If we are already seeing digital broadcasts, why do we not "pass" the test? Best regards and thanks in advance for all help, Lucy.