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Adjusting settings via DMX
Certain fixture settings and parameters can be adjusted from the DMX controller on DMX channels 21 and
22.
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, certain conditions must be met (see the notes for channels 21 and 22 in
the DMX Protocol table in this manual).
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 1500 W (full power), 1200 W, 1100 W, 1000 W or 900 W via DMX using the
ballast output control commands available on channel 21.
If the shutter and/or dimmer are closed for longer than 10 seconds, lamp power is automatically switched to
900 W. 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 15 for details of these parameters.
• Dimming curve
• Parameter shortcuts
• Zoom/focus linking
• Pan/tilt limits
• Calibration offsets
Adjusting settings via DMX
21
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