Operating instructions

Vidscope-HD User Manual
Manual vidscope-hd v2.doc
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5 "&
Vidscope can continuously monitor for video gamut
errors in your source material. It calculates those
colour values and luminance level that exceed the
proper RGB limits. It produces  as a
percentage of the picture area that has such
excursions. This figure is shown both on the 8
 and 1.
6.1 Actual Error
A small gamut percentage can occur in a legal
picture due sight over-shoots on sharp bright edges.
If errors occur over large areas, then the picture is
not broadcast legal.
6.2 Average Error
The 1 value can be very twitchy and
hard to read. The filtered 411 is
smoothed over the number of frames set in the
411 box to be more meaningful.
6.3 Peak Error
Every time the gamut value exceeds the peak value, it updates the peak
value. This remains indefinitely until the  button is clicked.
Thus a worst-case gamut figure over an entire programme segment can
be read off.
6.4 Alarm Flagging
The gamut  will flag a message on the preview monitor
window to indicate excursions over the pre-determined limit you set in
"4l box.
Similarly, common audio errors can be flagged in the same way by
enabling the  option. This works for out of balance and
apparently high (clipping) audio levels if present.