VariZoom VZTOC-FI2 - Manual (Page 8)

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For manual calibration, tap the motor you wish to calibrate
listed under “Manual” to enter the manual calibrate screen (as
shown to the left). Move the iris slider to the center position as
indicated on the screen – a center mark will appear and further
instructions will be shown on the screen. The slider will now
be used to run the motors until the first end point of the lens is
reached. The farther you move the slider, the faster the motors
will go, so when you get close to the stopping point, slow the
motors down by moving the slider back toward the center position – the motors stops
moving when the slider is at the center position. If you move the motors too far, you can
reverse it by moving the slider in the opposite direction past the center position – this will
move the lens back (stop the motors by returning slider to center position). When the
first end point is reached on the lens, tap the “OK” button. Now move the slider in the
opposite direction to find the other end point for the lens. Stop the motors at the correct
end point for the lens, and tap the “OK” button again. The lens is now calibrated, and
you will automatically be returned to the home screen. Repeat this again per motor that
needs calibration.
6. Setup Menu
The setup menu is where you can adjust power feedback, Com
Mode, and Backlash compensation for each individual motor.
“Power Feedback” will allow you to adjust the motor’s output power during auto
calibration. Some lenses require more force to move the lens rings than others. If the
motor’s power is set too low, then the motor will not have enough force to push the lens
gear to its limits, and result in incorrect calibration. If the motor’s power is set too high,
the motor will exert too much force, and potentially slip off the lens ring, also resulting in
incorrect calibration. The system defaults to 50.1 for each motor, and this is where it will
return if the “Reset All” button is pressed.