ETC Source Four User Manual page 3

Figure 1
3.12" dia.
3.70"
A-size pattern holder for 3"
diameter patterns
Figure 2
Drop-in iris slot
Yoke
Figure 3
Barrel rotation knob
Figure 4
Retaining clip in
locked position
Shaping the beam
2.75" dia.
3.70"
B-size pattern holder for
2.75" and 2.5" diameter
patterns
Iris
Bolt
Beam focus knob
Gel frame retaining clip
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.
Note: Because the Source Four aperture is three inches wide,
ETC recommends using A-size patterns for maximum pattern
effectiveness.
Use an optional donut in the accessory holder to enhance pattern
projection. Donut diameter may be 2.5 to 2.75 inches.
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 Phillips screws prevents light leakage.
To install an iris, follow these steps:
1. Use a Phillips screwdriver to loosen the screws on the drop-in
iris slot cover. Do not remove the screws.
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 screws.
Rotating the barrel assembly
1. Loosen the barrel rotation knob directly behind the shutters on
the underside of the reflector housing.
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.
The gel frame holder is equipped with a spring-loaded retaining clip
that prevents gel frames and accessories from falling out of the
holder.
Important: Hang Source Four with the gel frame retaining clip in the
locked position before using the fixture.
1. Release the retaining clip by pushing it sideways. The retaining
clip pops open.
2. Insert the gel frame.
3. Press the retaining clip down until it locks.
Important: Lock retaining clip before you use the fixture.