18
MAC III AirFX user manual
Important!
Regardless of the pan and tilt limits you set, when you power the fixture off, the head will sink under
gravity to the nearest rest position (e.g. with the lens pointing vertically downwards if the fixture is
hanging in a rig, or to one side if the fixture is standing fastened to a horizontal surface). When you
power the fixture on, the head will not move until the fixture receives a pan or tilt command. When a
command is received, if the head’s rest position is outside its pan/tilt limits, the head will move
slowly until it is within its limits. This feature reduces the risk of damage caused by a collision.
Pan and tilt limits can quickly be returned to the factory default setting (all limits at 0°, pan/tilt limits disabled)
by setting
DEFAULT LIMIT SETTINGS
to
On
and clicking with the jog wheel to confirm.
•
SPEED SETTINGS
lets you set
PAN & TILT SPEED
to
Normal
,
Fast
(optimized for speed) or
Slow
(optimized for smooth movement – useful in long-throw applications). Likewise, you can set
EFFECT
SPEED
to
Normal
,
Fast
or
Slow
. You can also set effect speed to
Follow P/T speed
, in which effects will
always use whatever speed is set for pan and tilt.
•
The
FANS
menu gives three cooling fan options:
-
LAMP COOLING
sets the lamp cooling effect to 50% or 80%. The color temperature of the lamp and
lamp performance towards the end of the lamp life vary slightly with the level of lamp cooling applied.
The default level is 80%, which is recommended for optimum performance over the full life of the lamp.
Setting to 50% gives a slightly lower color temperature and quieter fan operation but accelerates the
gradual reduction in output which is normal over the lifetime of a discharge lamp.
-
FAN CLEAN
gives three options for automatically clearing dirt from fans:
Off
sets fans to normal operation with no fan cleaning function.
Auto
sets fans to normal operation, but if a fan error is detected, the fan that has reported an error
speeds up to 100% for a short period and then returns to normal operation. If the fan error is still
detected after three attempts at cleaning, the fan returns to normal operation but continues to report a
fan error. This feature works independently for each of the fans. Attempts at cleaning are reset to zero
if the fixture is reset or if
FAN CLEAN MODE
is updated.
Forced
sets all fans to 100% speed until another
FAN CLEAN MODE
setting is selected.
This feature does not eliminate the need to inspect and clean cooling fans at regular intervals (see
“Cleaning” on page 37).
-
FAN MODE
allows you to set fans to
Always on
or
Follow lamp off
mode, in which fan operation is
disabled when the lamp is powered off.
•
DIMMING CURVE
provides four dimming options (see Figure 11):
-
Optically linear
– the increase in light intensity appears to be linear as DMX value is increased.
-
VRMS linear (S-curve)
– light intensity control is finer at low levels and high levels and coarser at
medium levels. This curve emulates the RMS voltage dimming characteristics of an incandescent lamp
such as the tungsten halogen lamp of the Martin™ MAC TW1™.
-
Square law
– light intensity control is finer at low levels and coarser at high levels.
-
Inverse square law
– light intensity control is coarser at low levels and finer at high levels.
•
FOCUS TRACKING
sets focus to automatically self-adjust when you use the zoom effect (see
“Zoom/focus linking” on page 25).
•
FOLLOWSPOT MODE
enables pan, tilt, or pan and tilt movement to be unlocked so that the head of the
fixture can be directed by hand using a user-supplied handle (see “Followspot mode” on page 25). In
followspot mode the motors can be applied as a brake to pan, tilt, or both pan and tilt movement to prevent
head movement when the fixture is not “manned”; in this case DMX or menu-based control over pan and
tilt is still disabled.
• AUTOMATIC LAMP ON
gives three lamp strike options:
- When set to
Off
, the lamp remains off until a “lamp on” command is received via DMX.
Output
DMX %
DMX %
DMX %
DMX %
Output
Output
Output
Optically linear
VRMS linear
Square law
Inverse square law
Figure 11: Dimming curve options
Summary of Contents for MAC III AirFX
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