Monitor Audio Vector Operations Instructions download pdf (Page 34)

Vidscope-HD User Manual

Manual vidscope-hd v2.doc

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

"4l 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.

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Monitor Audio Vector Operations Instructions Page 34