VariZoom VZCINEMAPRO-K2 - Manual (Page 6)

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Connect camera power (if applicable) between the 2-pin LEMO connector also located
on the back of the tilt arm
Connect the bloop/sync (if applicable) between the camera and the 6-pin Fischer
connector also located on the back of the tilt arm
If using the TOC system
Connect the TOC 3A (3 axis lens drive box) between the orange 16-PIN lens control
connector located on the front of the tilt arm of the Cinema Pro head, and the grey
“control” port located on the TOC 3A
Connect the Lens drive motors to the appropriate connection according to their function
(zoom, focus, iris)
If using a Preston MDR2*
Connect the MDR2 box between the 16-pin LEMO connector located on the front of the
tilt arm of the Cinema Pro head, and the appropriate command connected on the MDR2
box (refer to the manufacturer’s instruction manual for proper connections)
Connect the Preston lens motors according to their manufacturer’s instruction manual
* make sure that the MDR2 is not connected to any power source
(including batteries) prior to connecting to the head. This can result in
damages to the control console. The MDR2 will get all necessary power
directly from the head.
Balance the Camera – Although the head will hold position very well, it operates best
when the camera is balanced on the mounting platform. With heavier cameras, it is
essential, as an out-of-balance load will cause the servos to constantly fight to hold
position.
Make sure that the motor power is turned off before balancing. This will
allow you to move the tilt axis by hand. To balance the camera horizontally, you need
to place the camera’s front-to-back center of mass at the center of the mounting platform
slot. You can do this by trial and error, sliding the camera front-to-back on the mounting
platform until it stays level.
The simplest accurate way to find the
camera’s center of mass is to lay a pencil/pen on a
table and try to balance the camera on it front-to-
back. The spot on the camera where it comes
closest to balancing on the pencil is the center of
mass. Place the camera’s center of mass at the
center of the mounting slot and secure the camera
with mounting screws (2 if possible). When
horizontally balanced, the platform should stay
level.
Center of Mass