Martin Professional MAC 2000 Wash, Руководство пользователя

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Effects 17
Beam angles
The following tables list the beam angles available with the standard 50 mm (2 in) aperture ring fitted. Note
that narrower beam angles can be achieved by fitting smaller aperture rings. Note that light buster mode
provides a high intensity spot with no diffusion and is engaged when the zoom channel is set to 100%.
For information about changing the lens see “Changing the front lens” on page 21.
Motorized barn-doors
A motorized barndoor system that attaches to the front of the fixture is available as a separately orderable
accessory. These barndoors can be rotated, or opened and closed using DMX control signals. Five DMX
channels are allocated for barndoor 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 barndoors 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
Standard Fresnel lens Beam angle
Light buster mode 11°
Zoom narrow 15°
Zoom wide 40°
PC lens Beam angle
Light buster mode 12°
Zoom narrow 12°
Zoom wide 34°
Super-wide-angle lens Beam angle
Light buster mode 66°
Zoom narrow 70°
Zoom wide 80°