Martin MAC 2000 Wash User Manual download pdf (Page 18)

18 MAC 2000 Wash

For information about changing the lens see “Changing the front lens” on page 21.

Motorized barn-doors

A motorized barn door system that attaches to the front of the fixture is available as a separately orderable accessory.

These barn doors can be rotated, or opened and closed using DMX control signals. Five DMX channels are allocated

for barn door control irrespective of whether or not they are connected to the fixture. We have done this to cover the

possibility that you rig and begin programming your MAC 2000 Wash and add barn doors to it later. If the DMX

channels were not already assigned, you would have to re-patch your console and therefore would lose any

programming already completed.

Aperture adjustment

A 50 mm (2 in) aperture is fitted as standard in the optical path of the fixture just behind the zoom lens. This works

well with the standard Fresnel lens.

Inside the head of the fixture, three additional aperture rings are secured to the chassis by a thumbscrew. When using

the PC lens, the best beam characteristic is achieved by attaching the 45 mm aperture ring. For instructions on

changing the aperture ring see “Changing the aperture ring” on page 22.

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.

Super-wide-angle lens Beam angle

Light buster mode 66°

Zoom narrow 70°

Zoom wide 80°

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Martin MAC 2000 Wash User Manual Page 18