Barco SIM 7QP HB, User Manual

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B. NVG option (for SIM 7QP HC)
B. NVG OPTION (FOR SIM 7QP HC)
Overview
• Description
• Description of a full dimming cycle
B.1 Description
NVG option modes
The NVG (Night Vision Goggles) is an option at order time, that can be implemented during production on a SIM 7 to ensure a
realistic night vision simulation, fully compatible with night vision goggles. This technology offers improved contrast, deep black
levels and subtle gray shading.
With the IR enhanced technology, the image is displayed with the nature-like ratio between visual and IR light. This allows the use
to see a realistic night scenery both with and without night vision goggles, without changing any setting to the projector.
Technology
This technology is based on dedicated optical fi lters that automatically move into the light path from a certain TOD (Time Of Day)
setting on. In practice, this optical fi lter comes in when TOD drops below a value of 1001 . At the same time, Dynacolor (if enabled)
switches over to a NVG set (i.e. Set 3), to improve the quality level of the displayed night scenery. As soon as the TOD value raises
above 1000, the NVG
fi lter moves out and Dynacolor switches over to set 2, being the set with advanced color tracking through CLO.
The Lamp Runtime counting is doubled when the NVG fi lter is moved into the light path (i.e. if TOD drops
below 1000).
B.2 Description of a full dimming cycle
Introduction
The operator does not have to perform any action other than lowering the TOD value. This can be done through the projector’s OSD
or by sending commands using the API protocol (e.g. through the IG).
Dimming from full light transmission to a TOD value lower than 1000
Assume that we want to dim the light output, starting from a TOD of 10000 and end up with a TOD value of 100 . The following
sequence will be followed:
1.
First phase (TOD value is lowered, but has not reached 1001 yet): ECR is dimming the light output until it comes to its minimum,
being 25%
2. Second phase (TOD value is further lowered to 1001): CCD starts further dimming the light output (down to about 40%)
3. Third phase (TOD is set to 1000):
-
NVG fi lter moves into the light path
- ECR remains at 25%, keeping the Contrast Ration at the same level
- CCD returns to full transmission
- NVG Dynacolor set is enabled
4. Fourth phase (TOD value is further lowered to 100): CCD starts further dimming the light output
Increasing the light transmission from a TOD value below 1000 to full transmission
Assume that we want to go back from a TOD value of 100 to full light transmission, ending up with a TOD value of 10000 . The
following sequence will be followed:
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