ETC Source Four CE Zoom - Manual (Page 9)

7
English
Shaping the beam
The beam can be shaped using the shutters (see Figure 8 ), a pattern, an optional drop-in iris, or by
rotating the barrel.
Pattern Projection
The pattern holder slot is on the top side of the barrel and in front of the shutters. It accommodates
A-size, B-size and glass pattern holders (see Figure 7 ).
Use an optional donut in the accessory holder to enhance pattern projection. Donut diameter range
should be 6.35 cm to 6.98 cm.
Drop-In Iris Slot
The drop-in iris slot is located on the top of the barrel and in front of the pattern holder slot. It
accommodates either a drop-in iris or a motorized pattern device. When the slot is not in use, a
small sheet metal cover secured with two screws prevents light leakage (see Figure 8 ).
Step 1: Use a screwdriver to loosen the screws on the drop-in iris slot cover. Do not remove
thumbscrews.
Step 2: Slide the cover completely forward to expose the slot.
Step 3: Insert the iris or motorized pattern device. For an iris, install the flat side toward the
shutters and make sure the iris handle extends from the slot.
Step 4: Slide the slot cover back toward the shutters until it meets the iris handle. Leave enough
space to move the iris handle.
Step 5: Secure the drop-in iris slot cover by tightening the screws.
N o t e : Because the Source Four aperture is 7.62 cm wide, ETC recommends
using A-size patterns for maximum pattern effectiveness.
7.92 cm dia.
9.4 cm
6.98 cm
9.4 cm
Figure 7
A-Size Pattern holder: holds
7.62 cm diameter patterns
B-Size Pattern holder: holds
6.35 cm and 6.98 cm
diameter patterns
Drop-in iris slot
Iris
Figure 8
Shutters