There seems to be no concrete information on the Blackmagic Ultrascope in terms of actually reading the waveform and the histogram.
1) In the RGB waveform, what are the numbers to the left (0-800); the right side numbers seem to be the IRE's (0-100).
2) What does the composite mode show in the luminance waveform?
3) Has anyone had problems with the histogram? That is the most confusing bit.