AAton XTRprod, User Manual

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of the control unit to those connectors on the body and plug in the
unit.
Replace the two allen screws to fasten the control unit; a third screw
of the same size should be screwed into the upper right side of the
unit from the opposite direction.
The control unit can remain permanently attached to the XTRprod
without adding discernable bulk or weight. Simply keep the unit
turned off and the beamsplitter retracted (see below) when video as-
sist is not needed.
2.12.2 The Internal Beamsplitter
The Aaton CCD assist system employs an internal, user-retractable
beamsplitter that reroutes a portion of the viewfinder's light path to
the CCD target while the video assist is in use. In situations which
do not require the CCD assist, the beamsplitter is designed to be re-
tracted to allow 100% of the viewfinder's light to reach the eyepiece.
From body # 1928 and on, the beamsplitter delivered as standard
from the factory has a 75/25 reflection ratio. This means that 25%
of the light from the viewfinder is sent to the CCD target when the
beamsplitter is in place. Although not visible from the outside of the
body, the 75/25 beamsplitter is identified by its blue anodized hol-
der.
Also available is a 50/50 beamsplitter, which sends a greater percen-
tage of light to the CCD target.
2.12.3 Positioning the Beamsplitter
The beamsplitter adjustment screw is located underneath a small,
capped port on the battery side of the camera. To access the beam-
splitter, unscrew and remove this silver cap. An allen head adjust-
ment screw will be visible through the opening. With the shutter
tool, gently rotate the adjustment screw approximately 30 turns in
the desired direction to position or retract the beamsplitter.
After 30 or so turns, the adjusting screw will reach its stop and resis-
tance will be felt. At this point, stop and rotate the adjusting screw
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THE CAMERA BODY