We did try to put a scope at the connector by removing the DU and check for signal quality. It is good there, bit of noise but OK.
If with put a TV monitor with NTSC input picture is good. The only problem is at night, where the DU gives us some black "lines", regardless of ground cam lights on or off. At some spots where picture is darker we've got a lot of noise. Do I don't know the kind of filters and processing Honney does on the input. Either it is raw input not filtered and they have a dedicated ship that is not doing any kind filtering on the NTCS signal.