Martin MAC 300 Bedienungsanleitung PDF herunterladen (Seite 21)

Adjusting settings via DMX 21

Adjusting settings via DMX

Certain fixture settings and parameters can be adjusted from the DMX controller on DMX channels 26 and

27 in 16-bit mode or channels 29 and 30 in 16-bit extended mode.

Commands sent via DMX override any settings entered in the fixture’s onboard control menus. However, to

reset the fixture, reset individual effects or cut power to the lamp via DMX if DMX Reset or DMX Lamp Off

are disabled in the control menus, the following conditions must be met:

• Slot 1 must be selected on the color wheel (DMX value 20 on channel 7 in 16-bit mode or 8 in 16-bit

extended mode),

• the prism must be on (DMX value 80-89 on channel 17 in 16-bit or channel 18 in 16-bit ext.), and

• open gobo must be selected on both gobo wheels (DMX value 0 on channels 8 and 9 in 16-bit or

channels 11 and 12 in 16-bit ext.).

Note also that a lamp off command sent by DMX must be applied for 5 seconds before it executes.

These requirements are a safeguard to help you avoid resetting the fixture or powering the lamp off

accidentally.

Resetting

Either the entire fixture or individual effects can be reset to their initial positions. Resetting individual effects

can allow on-the-fly recovery if an effect loses its correct position, for example, without having to reset the

entire fixture.

Lamp on / off

The lamp can be struck and doused from the DMX controller.

A peak of electric current that is many times the operating current is drawn for a fraction of a second when

striking a discharge lamp. Striking many lamps at once may cause a voltage drop large enough to prevent

lamps from striking or draw enough current to trip electronic circuit breakers. If sending lamp-on commands

to multiple fixtures, program a sequence that strikes lamps one at a time.

Adjusting lamp power

If full light output is not required, the power supplied to the lamp by the ballast can be reduced. Reducing

lamp power reduces heat output and therefore reduces noise from the cooling fans. It also reduces power

consumption, and it helps reduce the gradual fall in output that occurs over the lifetime of a discharge lamp.

Lamp power can be to set to 100%, 90%, 80%, 70% or 60% via DMX using the ballast output control

commands available on channel 26 (16-bit) or 29 (16-bit extended).

If the shutter and/or dimmer are closed for longer than 10 seconds, lamp power is automatically switched to

60% of full power. When the shutter is opened again, the lamp returns to full power.

Illuminating the display

The fixture’s display panel can be brought out of sleep mode with a DMX command. This makes it possible

to read the fixture’s DMX address while the fixture is installed in the rig.

After being illuminated in this way, the display will return to sleep mode according to the setting entered in

the onboard control menus.

Control menu setting overrides

The following fixture settings can be adjusted via DMX, overriding the settings entered in the onboard

control menus. See under “Control panel operations” on page 14 for details of these parameters.

• Dimming curve

• Parameter shortcuts

• Zoom/focus linking

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