Orbiting Kit; Soft Edge Matching Kit; Contrast Modulation Kit - Barco BarcoVision R9000740701 Owner's Manual

R9000740 vision m 701 multimedia
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b. Din Mini8-D9 adapter cable.
- To connect a Macintosh computer to the projector.
Available length : 1 m, order number R9827640.
c. D25-D9 adapter cable
- To connect a workstation to the projector.
Available length : 1 m, order number R9827630
Ceiling mount CM50
This suspension system enables to mount any projector from the BARCO 700 series
to the ceiling without using any mechanical interface, and to adapt the projector
perfectly to the local mounting requirements.
Order number CM50 with pulley : R9827990
Order number CM50 without pulley : R9827991.

Orbiting Kit

Static pictures are very often shown on large screen projectors, especially in
process control and presentation applications. Due to the fact that the same picture
information is shown for a long period in the same place, picture tubes can be
damaged by 'local burn-in'. To avoid this problem, a special Orbiting circuit is
available which moves the picture very slowly around a predefined screen area. The
cycle time is very long to make the movement of the projected image imperceptible.
The use of the orbiting kit is described in appendix A.
Order number : R9827780

Soft edge matching kit

Multi-screens are popular for many applications. In these installations, the goal is
to obtain a contiguous matched image, forming one homogenous view. The soft
edge matching feature provides a solution to the annoying side effects when
adjusting two or more projected images next to each other. To improve this
junction, both images must be overlapping within a certain percentage of the total
screen width. During the overlapping period, both video signals are modulated
by appropriate waveforms so that the resulting light output equals the rest of the
image.

Contrast modulation kit

The contrast modulation kit is designed to improve overall light output uniformity and
to overcome the inherent color shift errors, normally associated with CRT projection.
The laws of physics applied to projection optics dictate that the center of the
projected image will be brighter than the corners, this phenomenon is normally
referred to as 'corner fall off'. Due to the normal off-axis projection of the red and blue
images, CRT projection displays a phenomenon referred to as 'color shift', whereby
one side of the image is reddish and the other blueish. By modulating the amplitude
of the video signal with appropriate waveforms we are able to overcome both
problems.
The use of this contrast modulation kit is described in appendix C.
Order number : R9827800
11-4
R5975238 BARCOVISION 701 MULTIMEDIA 070497
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