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The horizontal sync polarity setting can be useful in case of a bad shaped edge, one can choose between the leading (active low) or trailing (active high) edge. The input format settings are used to "tell more" about the signals connected on the BNC’s, it completes the information in the source selection menu. -RGB is selected by default and means that an RGB signal is connected to the BNC’s -PR/Y/PB must be selected whenever: R59770134 ID LR-6 27/05/2011 6.Advanced • a progressive signal (32 kH