Martin MAC 300, User Manual

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15
Operation
s e c t i o n 7
O P E R A T I O N
This section describes the MAC 300’s controllable effects and how personality settings affect their behavior. Selecting
personalities from the control panel is described in the previous section.
M a r t i n R S - 4 8 5 c o n t r o l
The MAC 300 will be controllable with the Martin 3032 controller when version 2.07 of the 3032 software is released.
To respond to the controller, either Martin mode must be selected or automatic protocol detection must be enabled.
D M X - 5 1 2 c o n t r o l
The MAC 300 may be operated with USITT DMX512 controllers in 4 different modes that mix vector and/or tracking
control with 8-bit or 16-bit pan/tilt resolution in different combinations.
Tr a c k i n g v e r s u s v e c t o r c o n t r o l
With tracking control the time it takes an effect to move from one position to another is controlled by programming a
fade time on the controller. The controller divides the move into steps and updates the fixture with small changes at the
rate required to achieve the fade. The MAC 300 follows or “tracks” the changes, and averages them with a digital filter
algorithm to ensure smooth movement at all speeds.
With vector control you set the fade speed on a separate speed channel. This provides a way to fade effects with con-
trollers that do not have programmable fade times. With controllers that send slow or irregular tracking updates, vector
control provides smoother movement, particularly at slow speeds.
Tracking control can be enabled in vector mode by setting one or both of the speed channels to “tracking speed.” When
setting a fade speed, though, the controller fade time must be 0, i.e., the position snaps from one value to the next.
Vector control also provides a special “blackout speed” and overrides of the shortcut and pan/tilt speed personality set-
tings.
8 - b i t v e r s u s 1 6 - b i t p a n / t i l t r e s o l u t i o n
With 8-bit pan/tilt resolution, pan and tilt are divided into 256 equal increments. Finer position control and smoother
movement is provided in the 16-bit modes, which divide pan into 40,192 positions and tilt into 39,424 positions.
C o n t r o l l a b l e e f f e c t s
All mechanical effects are reset to a home position when the fixture is powered up and they can also be reset from the
controller. The DMX Reset function (
P E R S / d R E S ), when set to off, prevents accidental resets by adding the
requirement that each CMY channel be set to a DMX value from 230 to 232.
An on-the-fly position correction system automatically corrects the position of the CMY wheels and the color wheel.
Though this feature can be disabled by turning Effects Feedback (
P E R S / E F F b
) off, doing so is not recommended.
L a m p
With the default setting, the lamp remains off until a “lamp on” command is sent from the controller. 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.
The MAC 300 automatically strikes the lamp within 90 seconds of being powered on only if the Automatic Lamp On
setting (
P E R S / A L O N ) is turned on. A delay determined by the fixture address staggers lamp strikes to prevent
excessive current draw.
The lamp can be turned off from the controller. Note: the lamp cannot be restruck for 8 minutes after being turned off.
Accidental “lamp off” commands can be prevented by turning the DMX Lamp Off setting (
P E R S / d L O F ) off.