A digital modulation format which is used for the transmission downward in cable TV systems - commonly used for cable HDTV. A QAM tuner will allow you to see digital cable channels without a cable box but only those that are broadcast without restriction. For example, a 600 baud line (600 shifts in the signal per second) can effectively transmit 2,400 bit/s
QXGA is used to define a specific resolution. The resolution is defined by the number of points an individual who uses the screen to display an image. These points are called pixels. QXGA display has 2048 pixels horizontal and vertical 1536 pixels resolution giving us a total of 3145728 pixels on the screen singles. A QXGA display has 4 times the resolution
From the moment that one opens the box and unpack the material of the screen you are buying, it is obvious that there are significant differences between the vendors of materials and running, attention to detail and quality of the product. Anyway, although these differences are present should be noted, once the screens are assembled and mounted, the quality