User manual

18 MAC III Performance user manual
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 39).
- 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 “Rotating Framing” on page 26). 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.
- When set to On, the lamp strikes automatically after the fixture is powered on.
- When set to DMX, the lamp strikes automatically when the fixture begins to receive DMX data, and
lamp power is shut down 15 minutes after the fixture stops receiving DMX data. Automatic lamp strikes
are staggered to prevent all lamps from striking at once. The delay is determined by the fixture address.
No matter what the AUTOMATIC LAMP ON setting is, the lamp can be struck by sending a lamp on
command via DMX on channel 26 in basic mode or 29 in extended mode.
• 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 reset effects by applying a special combination of
DMX values (see “MAC III Performance DMX protocol” on
page 47).
• 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 lets you rotate the display manually through 0°, 90°, 180° or 270° so that it can be
read easily no matter how the fixture is oriented. If set to Auto, the MAC III Performance senses its
orientation and rotates the display automatically.
Output
DMX % DMX % DMX % DMX %
Output Output Output
Optically linear VRMS linear Square law Inverse square law
Figure 11: Dimming curve options