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Connect your test pattern source to the input that you are calibrating and proceed as follows. Perform the adjustments in the order listed here. Brightness: On your external test pattern source, select a PLUGE pattern. (PLUGE is an acronym for “Picture Line-Up Generation Equipment.”) Figure 4-2 shows a typical PLUGE pattern. Below BlackAbove Black Figure 4-2. Typical PLUGE Pattern for Adjusting Brightness PLUGE patterns vary but generally consist of some combination of black, white and gray area