User manual

Section 3: Operation
3-58 Mirage S+/HD/WU, Matrix S+/HD/WU, Christie HD/DS+/DW, DLV User Manual
020-100001-07 Rev. 1 (11-2009)
POWER - This slide bar 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.
NOTE: Power level can be set only if the lamp is in P
ower mode.
INTENSITY – This value and slide bar 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
automatically levels off. At this point, the tracking function terminates (i.e., the power
level stabilizes) and the lamp will begin to dim normally. Either reduce your
“
Intensity” setting or replace the lamp.
Do not lower the “
Intensity” so much that the corresponding “Power” value reaches its
minimum—the intensity setting will be inaccurate and cannot be maintained. For best
results in achieving uniform intensity amongst tiled images, choose an “
Intensity”
setting that enables all lamps to operate at less than the maximum number of watts
available in your projector but high enough to keep the corresponding lamp power
above its minimum. See “
Power”, above.
NOTES: 1) Lamps become more stable over time, thus a specific intensity is more
easily maintained as the lamp ages. 2) Intensity can be set only if the lamp is in
"Intensity" mode 3) Intensity cannot exceed the output of Max Brightness mode.