Pan And Tilt; Speed Channels - Martin MAC 550 PROFILE User Manual

Pan and tilt

Pan and tilt are controlled on channels 22 to 25 (16 to 19 in basic mode). The coarse control channels set the first 8 bits
(the most significant byte or MSB), and the fine channels set the second 8 bits (the least significant byte or LSB) of the
16-bit control byte. In other words, the fine channel works within the position set by the coarse channel.

Speed channels

T r 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
Important! Effect movement may be rough and unpredictable if controller fade times are combined
with vector speed values.
The speed channels provide two methods for controlling speed that are known as "tracking" and "vector".
With tracking control, the speed at which effects move is determined by a cross-fade time programmed on the
controller. With this method, the controller divides a movement into tiny steps that the fixture "tracks". Tracking
control is enabled by setting the speed channels to one of the tracking values listed in the DMX protocol.
With vector control, speed is set with a DMX value on the speed channel. This provides a way to control speed on
controllers without cross-faders. Vector control can also provide smoother movement, particularly at slow speeds, with
controllers that send slow or irregular tracking updates. When using vector control, the controller's cross-fade time, if
available, must be 0.
B l a c k o u t
When "blackout while moving" is selected on a speed channel, the shutter closes when an effect moves to make the
transition invisible. The shutter opens when the movement is complete. This function is available for pan, tilt, color,
gobo, and prism change.
P e r s o n a l i t y o v e r r i d e s
The pan/tilt speed channel provides tracking values that allow you to override the pan/tilt speed setting from the
controller.
The effects speed channel provides values for overriding the shortcuts setting for the color and gobo wheels.
16 MAC 550 Profile