Christie DS+5K User Manual page 77

The optical aperture inside the projector controls the diameter
OPTICAL APERTURE -
of the light beam passing through the system.
With a fully open aperture (slidebar default of
"0"), the maximum amount of light passes
through for maximum brightness in your images.
Increase the slidebar setting to reduce the aperture
diameter and maximize contrast ratio instead.
This read-only option lists the lamps most recently
LAMP HISTORY -
installed and recorded in the projector. Lamp History automatically
updates whenever you record a new lamp serial number—the new
lamp is added to the bottom of the list.
Use to record the serial number for a newly installed lamp:
CHANGE LAMP
In the Lamp S/N window, use the number text entry keys to record the new lamp
serial number and press
Other Controls if you need help entering the number. Once entered, the new lamp
serial number will be added to the Lamp History menu and the Lamp Hours timer will
reset to "0". Lamp Mode and Lamp Limit remain as they were for the previous lamp
and can be changed at any time.
Figure 3.26. Recording the New Lamp Serial Number
NOTE: Enter a serial number only if you have just installed a new lamp. This will
help ensure that lamp timer is not reset on an old lamp and that the number of hours
logged on the lamp will be accurate.
Always record the serial number of a NEW lamp.
again to accept the change. See Using Slidebars and
IMPORTANT
Section 3: Operation
User's Manual 3-51
.