how does hdtv work

Why is my HDTV not pass the test signal to digital programming?
Here's the ball. Tonight at 6 pm were tested all the 30 channels its digital signals, if everyone has the opportunity of knowing whether our TVs worked. I bought this Samsung HDTV last year alone, and its is supposed to work when the switchover comes into force on 2 / 17. When the whole network is the testing of five minutes is only static hair show. Why not run?
Well some HDTVs sold last year had two receivers. One of the tuner is digital (must be labeled or simply ATSC DTV) similar to that of others (which should be labeled NTSC). The connector type is equivalent to two tuners (input coaxial), because every dish (even at 30 couple of years of rabbit ears) will work with the new digital tuners … Inputs, but are independent and should be used exclusively. We never see "lint static" in the digital channels as "fuz Static" is a byproduct of an analog signal. So I would say that your antenna is connected to the input NTSC and be connected Atena ATSC entry. PS To all the main points of U.S. television stations were from digital broadcast signals simultaneously and analog for some time. In fact, all major U.S. networks (CBS, NBC, ABC, FOX, CW, PBS) simulcast: analog, digital (definition standard) Digital (HDTV). Digital tuners work a little different than analog tuners, once you've connected your antenna, perform a channel scan, etc. ..
TV & Electronics : How Does a TV Tuner Work With DIRECTV?


