Martin MAC III Profile User Manual page 17

Tilt range is +134° and -134° either side of 0°, which is the head straight up position with the front
glass pointed directly away from the base.
The light beam points fully forward (the front of the fixture is indicated by the arrows printed under the
base) when pan is set to 90° or 450° and tilt is set to +90°.
Selecting Inside keeps pan and tilt inside the limits you set – i.e. angles define a 'safe zone'.
Selecting Outside keeps pan and tilt outside the limits you set – i.e. angles define a 'no-go zone'.
Limits are not activated until the head is panned and tilted into its safe zone or out of its no-go zone.
When pan/tilt limits are active, the PAN/TILT light at the bottom right of the display lights yellow.
See Figure 10. To limit pan so that it stays inside a safe zone 20° either side of fully forward and limit tilt so
that it stays inside a safe zone 18° either side of fully forward, for example:
1. Set PAN MINIMUM to 70°.
2. Set PAN MAXIMUM to 110°.
3. Set TILT MINIMUM to +72°.
4. Set TILT MAXIMUM to +108°.
5. Set P/T LIMIT AREA to Inside.
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.
Pan safe zone
Inside, min. +70°, max. +110°
Figure 10: Pan/Tilt limit settings
Control panel operations
+70°
+90°
+110°
Inside, min. +72°, max. +108°
+72°
+90°
+108°
Tilt safe zone
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