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E
FFECTS
Lamp power
Fixture reset
Dimming and strobe
14
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This section describes the functions programmed in the MAC 550 Profile DMX protocols. The fixture has two DMX
operating modes, basic and extended. The extended mode requires six more DMX channels than the basic mode and
provides all features of the basic mode plus fine control of the dimmer, color wheels, iris, zoom, and focus.
Channels references in this section refer to the extended mode protocol unless otherwise noted. The complete DMX
protocol begins on page 25.
L a m p - o n
The lamp-on command on channel 1 closes the relay that provides power to the lamp. When the lamp is on, the
command has no effect.
Note: A peak of electric current that can be many times the operating current is drawn for an instant 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 circuit breakers. If sending lamp-on commands to multiple fixtures, program a sequence
that strikes lamps one at a time at 5 second intervals.
L a m p - o f f
The lamp can be doused from the controller with the lamp-off command. The command must be sent for 5 seconds.
If the lamp-off command is disabled (
effects are selected:
• color wheel 1: slot 1 (DMX 189 - 193)
• color wheel 2: slot 1 (DMX 189 - 193)
• prism: in, no rotation (DMX 80 - 89)
• gobo wheel 1: open (DMX 0 - 11)
• gobo wheel 2: open (DMX 0 or 194 - 202)
If an effect loses its indexing and fails to move to programmed positions, the fixture can be reset from the controller by
sending the "Reset" command on channel 1.
If DMX reset is disabled (
PE R S
under "Lamp-off" are met. If it is set to
The mechanical dimmer/shutter system provides smooth, high-resolution 100 percent dimming, instant open and
blackout, random and variable strobe effects, and random and variable pulses in which the dimmer snaps open and
slowly dims or snaps closed and slowly opens.
Fine control of the dimmer is available in extended mode.
manuals search engine
P E R S
>
d L O F
>
O F F
), the lamp-off command works only if the following
>
d R ES
>
OF F
), the reset command can only be executed if the conditions listed
5SE C
, the reset command must be sent for 5 seconds before executing.
MAC 550 Profile
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