Harman Martin MAC Ultra Performance, Руководство пользователя

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10
MAC Ultra Performance User Guide
With the fixture installed in a lighting rig with the head below the base and with the head the right way up,
the framing blades are numbered counting clockwise from the 12 o’clock position:
• Blade 1 = Top
• Blade 2 = Right
• Blade 3 = Bottom
• Blade 4 = Left
Zoom and focus
Adjusting focus lets you vary the sharpness of projected images at different distances. It can be particularly
effective when used together with gobos and the animation wheel.
The MAC Ultra Performance’s zoom lens varies the focused beam angle from 7.7° to 53°. Wide zoom
angles allow sharp focus on projection surfaces close to the fixture. At narrower zoom angles, sharp focus is
only possible further from the fixture.
If zoom is set to the narrowest position, it is not possible to focus on all effects at all distances. So when
Zoom/Focus tracking is disabled:
• You can find the narrowest zoom angle at which sharp focus is possible by setting focus to DMX value = 0,
then starting at the narrowest zoom angle and gradually moving towards wide until you achieve sharp
focus.
• At the widest zoom angle, simply set zoom to widest and adjust focus until you achieve sharp focus.
When Zoom/Focus tracking is enabled, we suggest that you set zoom to medium and then change the focus
setting until you achieve sharp focus with the desired effect. Changing the zoom angle will now
automatically change focus to keep a relatively sharp focus (some fine tuning may be necessary if you want
the sharpest focus). Not all effects can be in sharp focus at all zoom settings. At some combinations of
effect and distance, zooming to the widest or narrowest angles can cause loss of focus if the effect is no
longer within its focusable zoom range at that distance.
Zoom/focus linking
Focus varies with zoom angle, but focus can be linked to zoom so that it automatically adjusts to match
changes in zoom angle. Focus on rotating gobos matches zoom closely, while focus on the animation wheel
matches zoom best in the center of the zoom range and slightly less precisely at the two extremes of the
zoom range.
Linked zoom/focus works within 3 distance ranges: close-, medium- and long-range. The ranges are as
follows (figures are approximate):
• Close (5 - 10 meters / 16.5 - 33 ft.)
• Medium (10 - 20 meters / 33 - 66 ft.)
• Long (20 meters - infinity / 66 ft. -
∞
)
To link zoom and focus, select a distance range using the Control/Settings DMX channel or FOCUS
TRACKING in the control panel PERSONALITY menu. Then adjust focus to obtain the required degree of
sharpness. Linking is now enabled and focus will auto-adjust to match changes in zoom angle.
Pan and tilt
The MAC Ultra Performance offers 540° of pan and 268° of tilt.
16-bit pan and tilt control are available. In each case, the second (LSB) DMX channel adjusts the position
set on the first (MSB) channel.
It is possible to set limits for the pan and tilt range (see details on page 18).
LED PWM frequency control
The PWM frequency of the MAC Ultra’s LEDs has been chosen carefully to avoid flickering on camera. In
some rare situations – for example when using cameras with non-standard settings – it may be necessary to
adjust the LED PWM frequency manually.