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Barco - RHDM-1701 - User manual 205
Addendum
NOTE
:
The percentages define the reduction of the image on one side of the screen. The reduction takes place at both
sides of the screen and thus the total reduction is defined as twice the percentage tabulated for both horizontal and
vertical.
Overscan note:
The EBU and ITU recommendations work under different assumptions: EBU reduces the image by
18 pixels (2.5% of 720) of a SD signal to compensate for overscan, while ITU starts from the full
720 pixel width. The display unit always uses the full width of the signal, even when calculating EBU
standard safe area markers.
SMPTE note:
SMPTE only defines standards for safe area markers relative to image borders. The display unit
uses the percentages recommended by SMPTE for safe area markers relative to the aspect ratio
marker.
4:3 signal safe area markers note:
The standards only define safe areas for 4:3 signals for retention of the 14:9 central zone. The
display unit will place the safe area markers relative to the aspect ratio markers as well and the
same percentage is used, as if it were relative to the image borders.
Custom aspect ratio marker note:
When a custom aspect ratio marker has been specified, the standards mentioned above do not
define the safe area and the standard selection will be locked on custom.