User Guide Owner's manual

VN-QUANTUM User Guide Section 3: Functional Overview
I455GB issue 8 Page 83
Scenario 3 – Maximum number of video sources on a tiled display
Screen Layout
6 UXGA display devices are used to create a 3x2 tiled display. 144 video source windows are
arranged as a 12x12 array. The total display size is 4800x2400 pixels, making each window around
133x100 pixels.
Because each window is smaller than the native source resolution, each source is scaled down to the
required size by the Input Card. This greatly reduces the amount of source data needing to be
transferred across the RAPT bus to the Output Card and allows a large number of sources to be
displayed simultaneously in real-time.
Hardware Requirements
 3 Output Cards (driving 6 UXGA screens)
 12 Input Cards (providing 144 source inputs)
 An ES3301-2 Card Frame.
System Capacity
The limit of 144 real-time video source windows is imposed by the maximum number of card slots
being used.
Expansion Options
Assuming that all video sources are using single-field de-interlace and are sampled at 4:2:2, only
around 50% of the RAPT bandwidth is being used. Rectangulation is also well below its limit, so there
is plenty of headroom for adding RGB graphics (VN-GLIMPSE) sources.