LPM-55 Multi System TV Pattern Generator/television signal generator ... -Y color difference signal output.2, the output imaging system consists of: NTSC, NTSC4.43, PAL, PAL-M ... of test patterns include: round, 8-level grayscale, 16-level grayscale, color stripes, multiple frequencies, RY color ... 6, gray scale, 8-order linear grayscale and 16-order linear gray scale7, multiple frequencies of eight ...