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FUNCTION. Over the life of the lamp the Calibrate
Luminance process should be run periodically to insure
that the brightness vs. Lamp Power table is representative
of the current bulb condition.
Lamp Power Raise/Lower is used to adjust the bulb
brightness and therefore the screen luminance. While the
Lamp Power indicator displays a value that is linked to the
Maximum and Minimum Lamp Power parameters
included in the Serial Code, the "Lamp Power" saved to a
FUNCTION is the value based on the direct measurement
of the lamp brightness as monitored by the same photocell
used to maintain a consistent screen luminance. Saving the
measured lamp brightness value insures that when the
FUNCTION is recalled the lamp brightness referenced by
the FUNCTION is consistent through out the useful life of
the bulb. If you arbitrarily adjust the Lamp Power and then
save this new value to the CURRENT FUNCTION, the
new brightness value will be recalled whenever that
FUNCTION is recalled either by selecting the
FUNCTION on the Projector Control screen or when it is
linked to a CPL.
Prior to adjusting the Lamp Power, verify that CURRENT
FUNCTION displays the desired target so if the
adjustment is saved it is applied to the correct
FUNCTION. To change the CURRENT FUNCTION refer
to "Change Projector Function" on page 33.
To adjust LAMP POWER, tap Menu, tap Function
Setup, and then either tap, or press and hold, the
LEFT ARROW (Lower) or RIGHT ARROW (Raise)
while viewing the projected image on the screen.
LAMP POWER
Save to FUNCTION
Lamp Power changes are made in increments of 1%. The
Indicator shows the current Lamp Power setting.
To save the bulb brightness or luminance value
corresponding to the adjusted Lamp Power in the
CURRENT FUNCTION, tap Save to FUNCTION.
Caution: Once changes are saved to the CURRENT
FUNCTION THERE IS NO "UNDO" and the changes
you have made will effect the presentation every time the
indicated FUNCTION is recalled using either the Projector
control screen or when the FUNCTION is associated with
a CPL as part of a Show or SPL. This is especially
36
Function Setup
Lower
Raise
significant for Lamp Power because the bulb brightness,
i.e., screen luminance value stored in the CURRENT
FUNCTION may have been set to a standard value,
e.g., 14 ft-L using a luminance measurement device.
If you make changes to settings and, prior to saving the
changes, exit the FUNCTION SET-UP screen the changes
will be discarded. However, the settings will be retained on
the projector until a new FUCNTION is selected.
Adjust Projector
The digital image (from the Content Element file) appears
on the imaging devices as a "flat" picture. For this reason,
it is practical to use projection lenses that optically zoom
to properly size the image to the auditorium screen. The
lens Zoom setting is associated with the Current Function
and recalled when that FUNCTION is selected on the
PROJECTOR CONTROL screen or associated with a
CPL. This is a mechanical adjustment of the projector lens
and should not be confused with any kind of image
manipulation creating a zoom effect.
When you configure the Projector for an aspect ratio, e.g.,
®
2.39:1 (CinemaScope
), 1.85:1 (VistaVision
1.33:1 (Academy), the SRX-R220 sets the lens zoom to a
defined point so the larger of the image dimension fills the
screen. During projector installation the lens zoom setting
is adjusted using internal Projector Test Patterns or a
standard test DCP. Zoom positions for common aspect
ratios would be stored in selected FUNCTIONS
2
SRX Controller
. Once these settings are memorized to a
FUNCTION the LSM-100 Screen Management System
software can associate these FUNCTIONS with a CPL
which recalls lens settings when the CPL is included in a
presentation.
Lens focus can also be stored in a FUNCTION. By storing
the focus gear position, the SRX-R220 can recall the
correct focus position when the LSM-100 associates the
FUNCTION with a CPL which recalls lens settings when
the CPL is included in a presentation.
Electric V shift applies a vertical position offset to the
image. This setting is stored in the FUNCTION and, when
the LSM-100 associates the FUNCTION with a CPL, a
vertical offset is recalled and applied to the image when the
CPL is included in a presentation. This offset is used to
adjust for any slight displacement in the vertical center of
the image when different aspect ratios are presented.
1.A number of projector settings are stored including
the lamp brightness/luminance value so image bright-
ness can be maintained regardless of aspect ratio.
2.The SRX Controller exercises direct control over
the projector and therefore should not be used at the
same time the Projectionist Terminal or SMS Control-
ler is in operation.
®
) or
1
using the
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