Shaping The Beam - ETC Source Four Zoom Manual Del Usuario

Shaping the beam

You may shape the beam with the shutters, a pattern, an optional drop-
in iris, and/or by rotating the barrel.
Pattern projection
The pattern holder slot is on the top side of the barrel, immediately in
front of the shutters. It accommodates A-size, B-size and glass pattern
holders. See Figure 5 .
Use the optional donut (model # 400 ZDN) in the accessory holder to
enhance pattern projection. Donut aperture diameter should be 70mm.
Drop-in iris slot
The drop-in iris slot is on the top side of the front barrel, immediately in
front of the pattern holder slot. It accommodates either a drop-in iris or
a motorized pattern device. When it is not in use, a small sheet metal
cover secured with two crosshead screws prevents light leakage and
retains the iris assembly. To install an iris, follow these steps:
1. Loosen the thumb screws on the drop-in iris slot cover. Do not
remove the screws. See Figure 6 .
2. Slide the cover completely forward, exposing the slot.
3. Insert the iris or motorized pattern device. If you install an iris, the
flat side must be toward the shutters and the iris handle should
extend out of slot.
4. Slide the slot cover back toward the shutters until it meets the iris
handle. Leave enough space to move the iris handle. Tighten the
thumb screws.
Rotating the barrel assembly
1. Loosen the barrel rotation knob directly behind the shutters on the
underside of the reflector housing. See Figure 7 .
Caution! Do not remove the barrel rotation knob.
2. Rotate the barrel to the desired position (up to 25° in either
direction from centered position.)
3. Once the barrel is positioned, tighten the barrel rotation knob to
lock it into position.
A-size pattern holder
for 8 cm diameter
patterns
79mm
diameter
94mm
B-size pattern
holder for 7 cm and 6.3
diameter pattern
Thumb screws
Iris
Barrel rotation knob
CE Source Four Zoom • 11
English
70mm
diameter
94mm
Figure 5
Drop-in iris slot
Pattern holder
slot
Figure 6
Figure 7