Martin MAC 401 Dual User Manual download pdf (Page 16)

16 MAC 401 Dual

™

user manual

Resetting via DMX

By default, it is possible to reset the whole fixture, reset pan and tilt only or reset effects only by sending a

DMX command on the Fixture Control DMX channel (the last of the channels used). This feature can be

disabled (to avoid accidental resets in the middle of a show, for example) and enabled in the DRES

submenu.

If the DMX reset feature is disabled in the

DRES submenu, it is still possible to override this setting and

reset the fixture via DMX by sending DMX value 232 on channel 2 and DMX value zero on channel 1 before

applying the reset command on the Fixture Control channel.

Cooling

The FANS submenu gives you a choice of three cooling fan settings:

• The default setting

REG sets fans to temperature-regulated operation. This setting should suit use in all

normal situations and ensure excellent service lifetimes for all components.

• The

FULL setting maximizes cooling and reduces the operating temperature of the components in the

head. It is recommended when the MAC 401 Dual™ is used intensively in a warm environment or in fixed

installations. Note that this setting will give increased fan noise compared to temperature-regulated fan

operation.

• When the

SLNT setting is selected, Silent mode is activated and head fan speed is reduced to minimum.

The base fan will still run. Maximum values allowed for RGB or HSV will be limited (no matter what

operating mode is selected), so that less heat is generated. If the LEDs get too hot the fans will revert to

Regulated mode. When the LEDs are cool enough the fans shift back to Silent mode. The color wheel

channel has lower intensity when Silent mode is engaged.

Whatever cooling mode is selected, a thermal cutout shuts down power to the LEDs if the fixture

temperature exceeds safe limits. If this occurs, you must reset the fixture via the control menus or via

DMX, or cycle power to the fixture off and on again.

If a thermal shutdown occurs, you are pushing the fixture to its limits. Clean the fixture, particularly the air

vents, and check that there is sufficient airflow around the fixture. Consider increasing ventilation,

reducing the ambient temperature, or switching to

FULL mode.

Dimming

DIM allows you to select a dimming curve for overall intensity. You can choose from an optically linear

curve, a square-law curve that gives finer control at low intensity and coarser control at high intensity, an

inverse square-law curve, and an S-curve that gives finer control at low and high intensities and coarser

control at medium intensities (see Figure 6).

Display settings

The DISP submenu can be used to adjust the length of time the display is on before it switches off

automatically and goes into Sleep mode. You can also deactivate Sleep mode so that the display remains

on all the time.

You can set the intensity level of the display using the

DINT submenu.The default is 100%.

Two modes are available for displaying error messages in the

ERRM submenu. The default is setting is

normal, where error messages appear on the display at 100% intensity (regardless of what the display

intensity has been set to), and the service light illuminates. Alternatively, a ‘silent’ error mode is available,

where no error message is displayed, but the service light illuminates.

Output

DMX %

DMX %DMX % DMX %

Output

Optically linear S-curveSquare law Inverse square law

Figure 6: Dimming curve options

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 39 40

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Martin MAC 401 Dual User Manual Page 16

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