4. Operating
Barco – TransForm A - Workstation for Windows – DOC-3266-2 – Revision 16 – August 2007
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4-6
Bandwidth optimization for video and RGB windows:
All optimization settings are made in the video software of T
RANS
F
ORM
A, please refer to the sec-
4.3.4 Displaying sources of Quad Analog Video Card
and the following.
Number of pixels
Video and RGB data can be pre-scaled on the input card. The amount of pixels of a frame is recal-
culated to a lower amount. This reduced amount of pixels means lower need of bandwidth for the
transmission to the O
MNI
S
CALERS
. On the O
MNI
S
CALER
the factor for pre-scaling is considered during
up-scaling to obtain a video window in the desired size. (Use
Pre-Scale
in the
Scaler Settings
dialog). In the bandwidth formula only the reduced amount of pixels must be considered.
Frame rate
For video sources there are two settings for the
Frame Rate
selectable.
For RGB sources the frame rate depends on the setting of the
Frame Rate Reduction
. Sources of
the D
UAL
DVI
I
NPUT
C
ARD
consider in addition the static reduction of the frame rate, which depends
on the input mode; please refer to section
.
Color depth
RGB sources can be digitized with 16 bpp or with 24 bpp (Use
Pixel Format
in the
Scaler Settings
dialog); please refer to section
.
