Accepts one 8VSB (digital off-air) or QAM 64/256 Input (digital cable) and delivers one output in NTSC composite video with analog stereo audio. It allows delivering of a digital off-air program to viewers with an analog TV set. It also allows an operator to cherry-pick channels from a "clear" QAM cable lineup.
AQD-PLUS is the same as AQD, but includes the AFD broadcast package. AFD (Active Format Description) is a standard set of codes embedded in the video stream and used by digital television