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manipulates motors 1a and 1b in unison to Thrust the shutter into the aperture of
the fixture. The control above that adjusts the relationship between those two
motors, giving you one handle for controlling the Angle of that shutter:
Note that the Thrust is measured in percentage. Most moving lights only allow
you to put the shutter part way into the field of light. Above you can see the Top
Thrust for the VL1000TSD is set to 25%, but its maximum value is 80% (not
100%). That is because the VL1000 physically can only cut out 80% of the beam.
The angle is limited to -35° to 35°. Conversely, the VL3500 can only push the
shutters 47% of the way into the beam. By using a percentage unit to describe the
Summary of Contents for choreo
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