Christie DS+4K, Руководство пользователя

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Section 3: Operation
User’s Manual 3-45
.
Specifications). Keep in mind that the “maximum brightness” for any lamp
gradually diminishes with age—images will become dimmer over time. Its
current output level appears in the “
Intensity
” option (note: not in lumens).
•
Intensity:
Brightness will remain close to a specified level for as long as
possible. Once you select this option, enter a number representing the intensity
level (brightness) you wish to maintain—the projector will automatically adjust
power as needed to maintain this intensity as closely as possible. Note that the
intensity value is a correlation only and does not represent an actual lumens
level. See “
Intensity
” below.
•
Power:
The power supplied to the lamp will remain at your specified wattage
level. Once you select this option, enter the number of watts representing the
power level you wish to maintain. See “
Power
” below.
POWER -
This slidebar and number indicates how
many watts are applied to the lamp. You can apply
anywhere from approximately 60-65% of the maximum power intended for the
installed lamp up to 100% of the lamp rating. Set for the number of watts as desired,
keeping in mind that lower power levels produce dimmer images. When in either
Power
or
Max Brightness
modes, the power level remains constant. Specifying a
maximum power level here is the same as operating in
Max Brightness
mode.
NOTES: Power level can be set only if the lamp is in P
ower
mode.
INTENSITY –
This value and slidebar represents the
current brightness of your lamp, decreasing over time
when you are operating in
Max Brightness
mode or at a specific
Power
level. When
you are operating in “
Intensity
” mode this value remains at the original “
Intensity
”
setting chosen and cannot be adjusted.
NOTE: The number shown for “intensity” is not the actual lumen output, but rather a
correlated value only—1246 may represent 3500 lumens, for example.
To use “
Intensity
” mode, judge by eye (or use a meter) and set the level as desired for
your application. Over time, the projector will automatically increase the power
supplied to the lamp as needed to maintain the chosen intensity as closely as possible.
This mode is known as “Brightness Tracking” or “LiteLOC

”.
HOW LONG CAN I MAINTAIN BRIGHTNESS?
Software can maintain your “
Intensity
”
setting until the required power reaches the maximum rating for the lamp. The lower
the setting, the longer it will take to reach this threshold and the longer you can
maintain the desired brightness. Keep in mind that once the lamp power reaches its
maximum wattage (see “
Power
”, above), this tracking is no longer possible. At this
point, the lamp will gradually begin to dim as usual, even though your original
“
Intensity
” value will still appear in the menu. To resume accurate tracking, reduce the
intensity setting so that the resulting “
Power
” value is less than its maximum—the
lower the intensity, the longer it can be maintained.
For example, a 1000 watt lamp can be driven at no more than 1000 watts. To produce
desired brightness at the screen, a new lamp would likely need less than this
maximum rating—perhaps 812 watts (example only). Over time, however, the lamp
will require more and more current in order to generate the desired light, until
eventually the lamp wattage reaches its 1000-watt maximum and the lamp power