VARILITE VL4, Руководство пользователя

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C
HAPTER
2. I
NSTALLATION
& C
HECKOUT
2-11
02.9628.0010 CONFIDENTIAL
7-Oct-97
2.4 Lamp Optical Alignment
The proper focus of the luminaire occurs when the source of illumination
(lamp) is on the optical axis of the parabolic reflector. The optical
alignment can be achieved by moving the hotspot to the center of the beam
using the horizontal and vertical adjustment knobs on the lamp access plate
of the luminaire.
To optically align lamp:
Step 1. Connect luminaire to control console.
Step 2. Start lamp and allow few minutes for lamp to warm up.
Step 3. Choose flat surface such as floor or wall onto which to direct
light beam. This makes light beam hotspot visible.
Step 4. Focus beam on flat surface with no color and no diffusion.
Step 5. At console, turn BEAM control knob counterclockwise one-
half turn. Dark spot at center of beam should almost disappear.
CAUTION: To avoid breaking lamp, if there is difficulty in turning
horizontal and vertical adjustment knobs, and lamp feels like it is striking
parabolic reflector, turn knob in other direction.
Step 6. Identify horizontal and vertical adjustment knobs on lamp
mounting plate. Use these knobs to move hotspot to center of
beam. Turning adjustment knobs quickly eases the location of
hotspot in beam.
LAMP ACCESS PLATE
HORIZONTAL ADJUSTMENT KNOB
VERTICAL ADJUSTMENT KNOB