User's Manual

17
IV. MDR3. Detailed Description
The four channel MDR3 Motor Driver controls up to four motors, providing control signals
to the camera, and transfers camera operating data to the wireless network through the
transceiver module.
The MDR3 uses a lens calibration sequence to determine the mechanical limits of the zoom,
focus, and iris rings of the lens. This sequence is initiated whenever the Reset button on the
MDR is pressed, or whenever a motor is connected to the Motor Driver. Lens calibration
allows for precise, repeatable marks and also prevents accidental damage to the lens or
Digital Motor. An internal memory stores the positions of a calibrated lens for 12 hours
without external power.
To further protect the lens and driver electronics, the motors are electronically torque
limited and protected from overheating during stall.
The LED status displays for motor torque and direction are activated by pressing any of
the red buttons. Change the Torque and Direction setting of a motor by pressing the
MDR3: Torque and Direction Switches Input/Output Connectors
MDR3:
Channel Display &
Switches
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Top Channel Display & Switches
-
Side