Lamp Information; Luminance Adjustment - Sony Screen Management System User Manual

Lamp Information

Every lamp is identified by a unique 16 digit Serial Code
that includes the manufacturer id, lamp power (min./max.
range), and the individual lamp serial number.
Lamp Serial Code
Lamp Serial No.
The Serial Number of the currently installed Lamp and the
Drive Elec. Power (max) is shown in LAMP
INFORMATION. A new Lamp Serial Code is entered
during the Lamp replacement process using the SRX
Controller application or the Installer screen (Role
restricted). When the Serial Code of the new lamp has been
entered, the accumulated lamp usage time is automatically
reset to "0", and the count will restart from the replacement
point. The replacement date is also set (see "Lamp Status"
on page 54).

Luminance Adjustment

Projector maintenance may require the re-calibration of
Luminance.
62
Maintenance
LAMP INFORMATION
Drive Elec Power (max)
LUMINANCE ADJUSTEMENT
Adjust
Adjust (Luminance Calibration)
The SRX-R320 Projector includes a Lamp Control Mode
feature which, when enabled
application, maintains a nearly constant screen luminance
as the lamp ages and the bulb brightness vs. lamp power
applied is reduced. During the lamp replacement
procedure, lamp positioning is optimized. In addition, a
lamp brightness (luminance) vs. Lamp Power table is
created.
The Luminance Adjustment process uses an internal photo
sensor which measures the lamp's brightness while
adjusting the Lamp Power across the Lamp Power range
(50~100) as indicated in the lamp's Serial Code. A
brightness vs. lamp power table is created. This table is
used as a reference (for adjusting lamp power) to maintain
the lamp brightness value stored in the FUNCTION.
Note
The Luminance Adjustment process takes some time to
complete and should not be undertaken without an
understanding of the process. Normally it is done when the
lamp is replaced and periodically to insure correct tracking
of lamp brightness, i.e., screen luminance, vs. lamp power.
Essentially, the process steps the Lamp Power from the
minimum bulb rated setting to the maximum bulb rated
setting and measures the photocell detected brightness.
The results are saved in a table located in the Projector.
To initiate the Luminance
Adjustment process, tap Menu,
tap Maintenance, tap Projector,
and then tap Adjust in the
Luminance Adjustment group. A
confirmation message appears. Tap YES to continue or tap
NO to abandon the process.
Luminance calibration has only a relative impact on the
actual screen luminance based on the value stored in a
FUNCTION. This stored value is returned by the photocell
sampling the bulb brightness to realize the desired value,
e.g., 14ft-L, and stored in a specific labelled FUNCTION
such as "CinemaScope® 14ft-L". The Luminance
Adjustment process is done to insure that a brightness vs.
Lamp Power relationship is known to the Projector
subsystem.
1.This function is only available when the Lamp Control
Mode of the projector is set to "Luminance". Because the
default Lamp Control Mode setting is "Lamp Power", take
care when attempting to use the function. The SRC
Controller application can be used to set the projector to
the Luminance mode.
1
using the SRX Control