User guide

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71
TRIM
SERVO
The TRIM input sets the maximum allowed position of the motor.
The AL4100 will scale the incoming DMX data to fit the range set by
TRIM as shown by the following table:
TRIM
Voltage
DMX
Level
Position as
percentage of
TRIM
SERVO
Voltage
5V 0 0% 0V
5V 127 50% 2.5V
5V 255 100% 5.0V
4V 0 0% 0V
4V 127 50% 2.0V
4V 255 100% 4.0V
The TRIM input is most important in applications such as colour
changers where it is used to calibrate the number of gels fitted.
MAX
The MAX input is used to set the maximum speed allowed during a
position search. The voltage at this input will normally be set by a
divider
chain. It is not intended as a user control
T
HIGH MAX SPEED
V
LOW MAX SPEED
T
V