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10. Operating Acuras
10. OPER ATING ACURAS
About this chapter
Acuras is the module of the AutoAlignment Head that can measure colors, brightness and white uniformity on each channel of a
display and that can make adjustments to the projector settings to come as close as possible to a previously defined reference state
of this display.
This chapter describes the CLO regression principle, states the limits of the system and explains how to operate the AutoAlignment
Head:
• Gray Level Correction (GLC): over time, some grey level change can occur in the response of an LCoS projector. This can
be corrected by performing GLC. This operation may only be performed by Barco trained and qualified technicians.
It is recommended to perform Gray Level Correction once for every projector at the start of an installation when working towards
a set of Golden Alignments.
• Acuras Capture: when a full system alignment has been completed by a system implementation engineer, he should perform
an Acuras Capture to learn the brightness and color characteristics of this Golden Alignment to XDS RACU. A Capture stores
the current parameters of all projectors together with the measurement results that are obtained by the AutoAlignment Head.
This set of parameters and measurement will be the reference for future realignments. Additional Golden Alignments can be
set and captured for other Display system alignments, e.g. Day mode, Night mode, Dusk mode, etc.;
• Acuras Realign: is used to realign a display system of which colors, brightness and/or uniformity have drifted in time; i.e. the
projector parameters are adjusted to get the display system back to the reference state. It is possible to undo the latest Acuras
Realign if the result turns out not to be satisfactory. After a major system change (e.g. all lamps have been replaced, a projector
has been replaced) all Realignment data can be deleted to start back from the Captured state;
• Dynacolor calibration: This operation has been performed in i
deal conditions during factory alignment of a projector and
should not to be redone, except in very specific situations. This operation may only be performed by Barco trained and qualified
technicians.
Image 10-1
Acuras page
Prior to running the Acu ras capture and realignment, all stray light must be extinguished, the display area
must be kept fully d ark. This includes infrared (IR) sources, such as illuminators for IR c ameras.
See R59770566 — API Commands for XDS RAC U Software f or the Acuras commands which can be initiated
throug h the A PI .
R59770509 AUTOALIGNMENT HEAD GEN II 26/11/2013 115