The Leader LT4670-SER02 3G/HD/SD-SDI Test Pattern Output Hardware Option is a factory-installed option for the LT4670 Sync Generators. This option offers support for two 3G-SDI (Level A, Level B), HD-SDI, and SD-SDI signals, with two independent SDI signal output terminals, each with separate format, pattern, and phase settings. When the instrument is installed with a second LT4670-SER02 option, the instrument provides up to four SDI signal outputs with independent formats and patterns. A lip-sync pattern can be output in which video and audio are synchronized. This output allows for measurement of video and audio discrepancies in SDI signal transmission. Customer-created image files (BMP, TIF) can be used as test patterns. 16 channels (4 channels x 4 groups) of embedded audio can be superimposed. The time code pattern can be superimposed at any position on the screen. Scrolling pattern, moving box, ID character scrolling blinking, and circle blinking can all be superimposed on the pattern.