OPERATION
Roadie 25K User’s Manual
3-57
IMPORTANT
Always match this setting to your current cable lengths.
Use
LampLOC
to align a newly-installed lamp after its first power-up. For best results,
select the
DO AUTO
control in the LampLOC menu and wait a few moments for the
X-Y-Z values to stabilize. The motors and sensors will work together to precisely
position the lamp for optimized performance and brightness at the screen, utilizing
filtering to eliminate signs of lamp flicker. Progress status is displayed near the
bottom of the menu. When complete, the lamp alignment is optimized for the current
installation.
NOTES: 1) A 10-minute warm-up is recommended before adjusting LampLOC. 2)
Intensity mode(brightness tracking/LiteLOC) is disabled during a LampLOC
adjustment.
Table 3.4. Lamp Current Ranges
Ballast Type
Lamp
(kW)
Lamp Current Range
(amps)
2.0 66-80
Single-phase or 3-Phase
3.0 82-110
4.5 112-135
3-Phase
6.0 126-155
NOTE: Using “Max Brightness” or a maximum Lamp Power setting will exceed the
maximum values shown here by approximately 10%. Avoid prolonged use.
Using the LampLOC
Slidebars
The individual
LampLOC
slidebars,
each of which moves the
lamp along one axis only,
are provided as a
reassuring back-up should
the
DO AUTO
button fail or
if you feel a manual,
operator-assisted lamp
optimization will produce
more output. Either
measure your results with
a light meter at the lens and screen, or simply watch the intensity values near the top
of the menu. Note that with these slidebars you may attain a slightly higher peak than
with the
DO AUTO
button, but this peak may not be centered on the lamp curve thus
lamp performance may not be optimized (whereas the
DO AUTO
button also utilizes
filtering to eliminate the effects of any lamp flicker). In general, use the individual
slidebars if you feel it is unavoidable.
HOW TO ADJUST (IF USING A LIGHT METER):
First obtain peak readings on a light
meter centered in front of the lens, then at the center of the screen. For each button,
adjust in one direction, then back up when the reading begins decreasing.
NOTES: 1) Display a 100% white internal test pattern. 2) Use a tripod to center the
light meter with the lens. Distance from the lens does not matter. You may need an
attenuator, or wish to construct an internal foil aperture first. 3) This is an optional
procedure—watch the intensity feedback shown near the top of the menu if preferred.
Adjusting Lamp Position
'
(
LampLOC
)
Figure 3.34. Setting LampLOC
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