
18 MAC III Profile user manual
• 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.
- S-curve (voltage RMS) – 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.
• DMX LAMP OFF and DMX RESET define whether the lamp
can be powered off, or whether fixture or individual effects can
be reset by sending a DMX command on channel 26 in 16-bit
mode or 29 in 16-bit extended mode. If either of these settings
are set to OFF, you can override this setting and cut lamp
power or execute resets anyway by applying a special
combination of DMX values (see “MAC III Profile DMX
protocol” on page 38).
• PARAMETER SHORTCUTS determines whether the gobo
wheels and color wheel take the shortest path between two
positions (shortcuts enabled), crossing the open position if
necessary, or always avoid the open position (shortcuts
disabled).
• DISPLAY determines whether the display remains on permanently, or goes into sleep mode 2, 5 or 10
minutes after the last movement of the jog wheel or Escape button.
• DISPLAY INTENSITY lets you define the brightness of the backlit graphic display. Select Auto for
automatic adjustment to match the ambient light level, or manually set the intensity to a level from 0% to
100%.
• DISPLAY ROTATION rotates the display through 0°, 90°, 180° or 270° so that it can be read easily no
matter how the fixture is oriented.
• ERROR MODE enables or disables error warnings. If set to Normal, the display is activated and lights up
if the fixture needs to report an error. If set to Silent, the fixture does not light the display with error
warnings but error messages can still be read when the display is activated manually. In both Normal and
Silent modes, the status LED in the jog wheel lights amber to indicate a warning and red to indicate an
error.
Factory settings
FACTORY SETTINGS lets you restore the fixture’s default setup options. Effect calibration is not affected,
so any effects that have been re-calibrated will not be returned to factory calibration settings.
Fixture information readouts
The following fixture information can be called up in the display:
• FIRMWARE VERSION and FIRMWARE REVISION display
the currently installed fixture software version and revision.
• FIXTURE MAC ID displays the fixture’s factory-set MAC
(Media Access Control) address.
• RDM UID displays the fixture’s factory-set unique ID for
identification in RDM systems.
• POWER ON TIME provides two counters:
Output
DMX % DMX % DMX % DMX %
Output
Output
Output
Optically linear S-curve Square law Inverse square law
Figure 11: Dimming curve options
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