Source Technologies etc 410 User Manual

Page of 16
7
English
Centering lamp and adjusting the field
The two concentric knobs located on the lamp housing allow you to align the lamp and adjust its 
field. Se
. The outer knob centers the lamp within the reflector. The inner knob adjusts the 
lamp’s field.
Step 1:
Turn on the Source Four CE and aim it at a flat surface. Adjust the barrel to create a hard 
edge.
Step 2:
Unlock and loosen the outer knob by turning it counterclockwise.
Step 3:
Gently move the outer knob from side to side and up and down until the lamp is centered 
within the reflector.
Step 4:
Once the lamp is centered, turn the outer knob clockwise to lock it in place.
Step 5:
Finally, turn the inner knob either clockwise or counterclockwise to achieve an optimum 
flat field. See 
Figure 5
.
Focusing the beam
Step 1:
Loosen the beam focus knob located under the barrel as shown in 
.
Step 2:
Slide the lens tube forward or backward to achieve the desired beam edge.
Step 3:
Once the luminaire is focused, tighten the beam focus knob.
Outer Knob - lamp 
center adjustment
Inner Knob - 
peak/flat field 
adjustment
Rear lamp 
housing
Figure 4
Figure 5
Flat field-best adjustment
Hot spot - lamp pulled out 
too far
Field with hole - lamp 
pushed in too far
Beam focus knob
Figure 6