AAton XTRprod User's Guide download pdf (Page 47)

to one side, the angle of the beamsplitter must be adjusted.

The beamsplitter axis adjustment is located to the above/right of the

aperture and consists of an allen screw within a slot (see diagram on

the following page). A red dot to the upper left of the slot indicates

the position of the screw for Super16.

Loosen the allen screw one turn; while looking at the monitor move

the screw within the slot in the appropriate direction until the image

of the screen is centered. Afterwards, if the image is not sharp,

follow the directions under 14.7 Installing the CCD Head to adjust

focus.

2.12.5 The Manual Iris

The VR42 and VR46 CCD assists feature an automatic gain. In

certain situations, however, further light control may be desired

(such as high contrast or strong back-light circumstances). In these

instances, it is recommended to employ the manual iris feature,

which is located on the CCD head cover on the battery side of the

camera.

Under normal operation, this mechanical iris should be wide open;

on the VR42, check that the iris lever on the CCD cover is pointing

to the right at the large circle, indicating an open iris. When further

light control is necessary, look at the video monitor and move the

iris lever to the left, towards the smaller circle, to the desired degree.

On the VR46, the manual iris is controlled by a silver dial; moving

the black dot on the dial towards the large circle will open the iris,

towards the small circle will close it.

2.12.6 Battery Life with CCD Assists

The VR42 assist draws 180-200ma when powered. This translates

into approximately 8 to 9 hours of operation (without the XTRprod

running) from one 12V 1.8 ah on-board battery.

Although battery life will vary greatly depending on the amount of

ﬁlm run and the number of accessories powered from one power

source, you could estimate that one 12V on-board could run 4-5

magazines and the VR42 for 4-5 hours.

THE CAMERA BODY

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AAton XTRprod User's Guide Page 47