Speed Control - Martin MAC 250 Krypton User Manual

angle or rotation speed are selected on channel 5 (channel 7 in 16-bit Extended mode). Fine tuning of this
index position or rotation is available on channel 6 (channel 8 in 16-bit Extended mode).
The gobo wheel can also rotate continuously in both directions at variable speed.
F I X E D G O B O S ( M A C 2 5 0 E N T O U R O N L Y )
The MAC 250 Entour provides an additional wheel with 10 fixed gobo positions (plus open). The gobo and
the type of movement are selected on channel 7 (channel 9 in 16-bit Extended mode). The gobo wheel can
also rotate continuously in both directions at variable speed.
F O C U S
The beam may be focused from approximately 2 meters (6.5 feet) to infinity using channel:
• 7 in 16-bit mode on the MAC 250 Krypton
• 9 in 16-bit Extended mode on the MAC 250 Krypton
• 8 in 16-bit mode on the MAC 250 Entour
• 10 in 16-bit Extended mode on the MAC 250 Entour
R O T A T I N G P R I S M
The prism is controlled using channel:
• 8 in 16-bit mode on the MAC 250 Krypton
• 10 in 16-bit Extended mode on the MAC 250 Krypton
• 9 in 16-bit mode on the MAC 250 Entour
• 11 in 16-bit Extended mode on the MAC 250 Entour
The prism may be inserted and removed from the light path. It rotates in both directions at varying speeds.
P A N A N D T I L T
Head pan and tilt are controlled on channels
• 9-12 in 16-bit mode on the MAC 250 Krypton
• 12-15 in 16-bit Extended mode on the MAC 250 Krypton
• 10-13 in 16-bit mode on the MAC 250 Entour
• 13-16 in 16-bit Extended mode on the MAC 250 Entour
The course control channel sets first 8 bits (the most significant byte or MSB), and the fine channel sets the
second 8 bits (the least significant byte or LSB) of the 16-bit control byte. In other words, the fine channel
fine-tunes the position set by the course channel.

Speed control

The speed control channels are:
• 13 & 14 in 16-bit mode on the MAC 250 Krypton
• 16 & 17 in 16-bit Extended mode on the MAC 250 Krypton
• 14 & 15 in 16-bit mode on the MAC 250 Entour
• 17 & 18 in 16-bit Extended mode on the MAC 250 Entour
T R A C K I N G C O N T R O L
Tracking control for pan/tilt and the various effects is enabled by setting the speed channels to 0.
With tracking control, the speed at which effects move is determined by the cross-fade time between two
positions or scenes. The controller divides the move into steps and updates the fixture with small changes
at the rate required to achieve the fade. The fixture "tracks" the changes and averages them with a digital
filter algorithm to provide smooth movement.
DMX-512 control 15