Sony LMT-300, User Manual

Page: 36 / 71

29
Projector
Chap
te
r 1
Us
er Gu
ide
“Luminance Value” (bulb brightness) can be stored in a
FUNCTION which is compared to the previously
measured values stored in the projector table. Then, using
the table, the Lamp Power is adjusted to achieve the value
saved in the 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. It is
recommended that Luminance Calibration is done about
once a week.
Lamp Power Raise/Lower is used to adjust the bulb
brightness and therefore the screen luminance. The Lamp
Power indicator displays a value that is linked to the
Maximum and Minimum Lamp Power parameters
included in the Serial Code. However, the “Lamp Power”
saved to a FUNCTION is a value based on the direct
measurement of the lamp brightness as monitored by the
same photocell used to calibrate 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 FUNCTION so if the
adjustment is saved it is applied correctly. To change the
Current Function refer to
“Change Projector Function”
on page 26 .
To adjust LAMP POWER, tap Menu , tap Projector , 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 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 affect 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 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
Note: Controls in this group are unavailable when
Projection Type is set to “Single 3D”.
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 for 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
1
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
®
) or
1.33:1 (Academy), the SRX-R320 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
using the
SRX Controller
3
. Once these settings are memorized to a
FUNCTION the 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-R320 can recall the
correct lens focus position when the Screen Management
System associates the FUNCTION with a CPL which
LAMP POWER
Raise Lower
Save to FUNCTION
1.Since this is a mechanical adjustment it may take a few
seconds for the adjustment to be realized.
2.A number of projector settings are stored including the
lamp brightness/luminance value so image brightness can
be maintained regardless of aspect ratio.
3.The SRX Controller exercises direct control over the
projector and therefore should not be used at the same time
the Projectionist Terminal or SMS Controller is in opera-
tion.