ETC Source Four CE Zoom - Manual (Page 8)

6 Source Four Zoom CE User Manual
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. See Figure 4 . The outer knob centers the lamp within the reflector. The inner knob adjusts the
lamp’s field.
Step 1: Turn on the Source Four Zoom 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 .
Selecting the field angle and focusing the beam
Step 1: Press the locking lever push button and lift the locking lever to unlock the focus dial as
shown in Figure 6 .
Step 2: To reduce the field angle, rotate the focus dial clockwise. To enlarge the field, rotate the
dial counterclockwise.
Step 3: Once the desired field angle is established, slide the light baffle forward to soften or
backward to sharpen the edge.
Step 4: Once the field and edge are established, press the locking lever to lock the focus dial into
position.
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
Locking lever
push button
Locking lever
Beam focus dial
Figure 6
Light baffle