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Chapter 14:
Fixture Motion Functions
This chapter describes mechanical movement control for DLV fixtures.
Pan and Tilt
DLV fixtures have a 540° pan range and a 240° tilt range. Two DMX channels for Pan and two
for Tilt provide 16-bit position adjustment to a fraction of a degree.
MSpeed values can control the timing of pan and tilt motion for DLV fixtures, (see MSpeed
(Motor Speed) on page 238). To control Pan and Tilt movement timing via a DMX controller
crossfading, leave the Pan/Tilt MSpeed in its default Off setting.
NOTE: DLV fixtures use optical encoders for pan and tilt to instantly correct
the fixture’s position if the fixture is jarred from its programmed
position.
If a physical obstruction prevents the fixture from correcting its position, this
correction feature “times out” to prevent wear on the motors.
If the fixture’s position correction has timed out, remove the
obstruction and home the fixture to return it to normal operation.
Shutter
DLV fixtures have a mechanical shutter located in front of the projector output lens that
functions as a dimmer for the fixture’s output. This feature gives the operator the ability to fully
shutter the output and eliminate the residual luminance from video black. The Dimmer
parameter controls the dimming shutter adjustment from closed (DMX value = 0) to fully open
(DMX value = 255).
Focus
The Focus parameter controls the fixture’s mechanical focus from near (DMX value = 0) to far
(DMX value = 255).
Zoom
This Zoom parameter controls the fixture’s mechanical zoom from narrow (DMX value = 128) to
wide (DMX value = 255). Digital zoom capabilites are available from narrow (DMX value =
127)to extra narrow(DMX value = 0).
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