Effect Wheel; Iris; Focus And Zoom; Pan And Tilt - Martin MAC 2000 Profile II User Manual

Effect wheel

The effect wheel provides a variable frost filter and two rotating slots that house a beam shaper and a three-facet prism.
The position and velocity of the rotating slots are selected on the effect wheel's Position / Velocity Channel.

Iris

The iris closes down to 15 percent of its full-open diameter with high, 200-step resolution. The Iris Channel also
provides random and variable speed pulsating iris effects.

Focus and zoom

The focus lens focusses the beam from approximately 2 meters (6.5 feet) to infinity. The zoom lens widens the beam
from approximately 10° at full spot to 28° at full flood.

Pan and tilt

The yoke pans 540° and the head tilts 267°. For maximum positioning accuracy, select 16-bit mode.
The pan/tilt speed (fast, norm, or slow) may be selected on the pan/tilt speed channel. Setting the pan/tilt speed channel
to "blackout" causes the shutter to black out the light while the head is moving.

Speed control

There are two ways to control the speed at which effects move from one static position to another. These are known as
tracking control and vector control and are selected on the Pan/Tilt Speed and Effect Speed Channels. These channels
are independent so you may, for example, combine a vector control pan movement with a tracking control color fade.
In tracking mode, speed is determined by the cross-fade time. The controller continuously sends small position
changes that the fixture "tracks." To enable tracking mode, set the relevant speed channel to a tracking value. Note that
in addition to enabling tracking control, some tracking values also provide overrides of the menu settings.
In vector mode, speed is set directly on a speed channel. The cross-fade time must be 0. Vector control provides a way
to set speed on controllers that do not have programmable fade times and results in smooth movement regardless of the
cross-fade time or the controller's processing power.
To open the iris slowly in:
• Tracking mode, for example, you program a scene with the iris fully closed and a second scene with the iris fully open.
Then you set a cross-fade time between the two scenes of, say, 10 seconds. The controller gradually changes the iris
position value from 199 (closed) to 0 (open).
• Vector mode, you program the iris closed and open as before. Then you set the cross-fade time to 0 and program a slow
speed, in the second scene, on the Effect Speed Channel.
22 MAC 2000 Profile II