Martin MAC 301, User Manual

Page: 13 / 32

Setup 13
Restoring factory default settings
The MAC 301 Wash factory default settings can be restored by applying a LOAD DEFAULT command. If
you have fine-adjusted white balance, your new custom setting is not affected if you reload factory default
settings.
DMX address setting
The DMX address, also known as the start channel, is the first channel used to receive instructions from the
controller. For independent control, each fixture must be assigned its own control channels. Two MAC 301
Wash fixtures may share the same address, however, if identical behavior is desired. Address sharing can
be useful for diagnostic purposes and symmetric control, particularly when combined with the inverse pan
and tilt options.
The DMX address is configured using the DMX ADDRESS menu in the control panel.
If you are resetting the DMX address in a flightcase, you can prevent the fixture from physically resetting by
holding the right-hand base button down while powering the fixture on.
DMX modes
The MAC 301 Wash provides standard or compressed, 8-bit or 16-bit DMX control modes. These four
modes can be selected in the PERSONALITY menu. Depending on the selected DMX mode, the MAC 301
Wash requires 12, 15, 16 or 19 DMX channels. See “DMX protocol” on page 22 for details of DMX
commands available in the different modes.
The currently selected DMX mode is displayed in the main menu: S8, S16, C8 or C16.
Tailoring performance
Movement
The MAC 301 Wash provides several options for optimizing movement for different applications.
• RESOLUTION in the PAN/TILT menu sets pan and tilt to 16-bit or 8-bit control resolution during
stand-alone programming. The default setting is 16-bit. If this fine resolution is not required, you can set to
8-bit resolution for quicker scrolling through pan/tilt values.
• The PAN INVERS and TILT INVERS commands invert the direction of pan and tilt and the PAN/TILT
SWAP command sets pan commands to tilt and vice versa. These settings are useful for symmetrical
effects with multiple fixtures.
• SHORTEST DIST. sets effects to always take the shortest route from one scene to another and can
normally be left at the default setting ON.
Other performance settings
• CURVES allows you to select dimming curves for
DIMMER CURVE (overall intensity) and RGB
CURVE (intensity of individual RGB). In both cases,
either optically linear or square-law curves can be
selected. See Figure 4. Square-law dimming curves
give finer control at low intensity and coarser control
at high intensity.
• CAMERA MODE is designed to offer flicker-free
illumination in TV studios. 50HZ is best suited to PAL
and SECAM systems and 60HZ to NTSC systems.
FLEX mode is designed to eliminate flicker if
cameras have a refresh frequency that makes the
50HZ or 60HZ settings ineffective. Besides the
PERSONALITY control menu, CAMERA MODE options can also be selected from the lighting desk on
the fixture’s DMX channel 5.
Figure 4: Dimming curves
Ou
tp
ut
DMX % DMX %
Ou
tp
ut
Optically linear Square-law