Christie roadie 25k User Manual page 65

Gamma
Gamma
"Gamma" is a global setting that determines what gray shades are displayed between
minimum output (black) and maximum output (white) for all signals. The proper
setting helps maintain optimized blacks and whites while ensuring a smooth
transition for the "in-between" values utilized in colors. Thus, unlike brightness and
contrast settings controls, the overall tone of your images can be lightened or
darkened without changing the two extremes, and all images will be more vibrant yet
with good detail in dark areas.
The normal gamma setting of 2.2 is correct for most signals and conditions. If excess
ambient light washes out the image and it becomes difficult or impossible to see
details in dark areas, lower the gamma setting to compensate. Conversely, if the
image is washed out and unnatural, with excessive detail in black areas, increase the
setting. Again, good gamma improves contrast while maintaining good details for
blacks.
Menu
Menu
Press to enter or exit the projector's menu system.
Menu
OSD (On-screen display)
OSD
Press to hide the projector's menu system during use. To see the menus
OSD
again, do one of the following:
• Press and hold
• Press and release
• Press
OSD
Invisible menus are fully functional, enabling "hidden" access to numbered features
and image adjustments by entering the corresponding sequence of keypresses on the
keypad.
NOTES: 1) With OSD "on", you can still hide on-screen error messages and direct
slidebars doing so in the Menu Preferences menu. 2) The state of the on-screen
display is shown in the LCD window at the rear of the projector.
Shutter
Shutter
Press and hold
Shutter
blade closed or open with a single keystroke. Or press and release
immediately by
you are unsure of the present state). Alternatively, press
present on/off state. Close the shutter to mute all display while maintaining access to
projector functions. A closed shutter blanks the display (turns it to black) and reduces
lamp power to 60% of the maximum rating for 4.5 and 6.0 kW lamps (or 75% for 2.0
and 3.0 kW lamps). Opening the shutter restores lamp power to its previous setting,
and restores the image.
NOTES: 1) The status of the shutter is shown in the LCD display window at the rear
of the projector. 2) The shutter is open upon power-up.
for a second or two
OSD
followed immediately by
OSD
OSD
for a second or two to toggle the internal mechanical shutter
(closed) or (open) to guarantee the correct toggle (useful if
OPERATION
followed
Shutter
to toggle from the
Shutter Shutter
Roadie 25K User's Manual
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