Christie CP2000-X, User Manual

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BASIC OPERATION
CP2000-X User Manual
3-47
020-100031-01 Rev . 1 (03-2009)
4. To change your LiteLOC

setting, adjust the Lamp Power as desired and then
press “Set”. The LiteLOC

function will automatically begin to maintain this
new setting.
WHEN SHOULD I USE LiteLOC  ?
Typically, most theatre installations would use
LiteLOC

for daily operation, since it need only be set once for each lamp install,
and ensures consistent worry-free brightness at the screen for as long as possible. If
desired, reset LiteLOC

to a different level at any time, or override with a specific
lamp power setting.
HOW LONG CAN I MAINTAIN BRIGHTNESS?
Software can maintain a LiteLOC

setting until the required power exceeds the maximum rating for the lamp (2.0, 3.0,
4.5, or 6.0 kW) by approximately 10%. The lower your LiteLOC

setting, the longer
it will take to reach this “over-drive” threshold and the longer you can maintain the
desired brightness.
For example, a 6000-
watt lamp (6.0 kW) can
be safely driven at no
more than 6600 watts.
To produce 14 fL at the
screen, a new lamp
would likely need less
than this maximum
rating—perhaps 5120
watts (example only).
Over time, however, the
lamp will require more and more current in order to produce the 14 fL, until
eventually the lamp wattage reaches its 6600 “overdrive” maximum, and the power
to it automatically levels off. At this point, the LiteLOC

function terminates (i.e.,
the power level stabilizes), the lamp will begin to dim normally with age, and the
light output gauge will begin falling. Either reduce your LiteLOC

setting or replace
the lamp.
Using “Lamp Power”
To change to a different power level, simply enter a new Lamp Power percentage at
any time. This will override (and temporarily disable) any LiteLOC

setting that
may be in effect:
1.
Set “Lamp Power” to apply a specific percentage of power appropriate for the
installed lamp. LiteLOC

will automatically be disabled.
2.
Brightness will change accordingly, new values will appear for amps, volts and
watts, and the blue light output bar graph will move above or below the
LiteLOC

line, depending on the new setting.
Figure 3.32. LiteLOC  Expiry