Chapter 8: System Hardware Overview
5495975-1EN Rev.9 8-21
© 2013-2017 General Electric Company. All rights reserved.
Overhead Stationary Rail and Lateral Bridge
The overhead rail system consists of the stationary rails (ceiling mounted) and a bridge that travels longi-
tudinally along the rails. Guide bearings maintain alignment of the bridge with the rails and the X-ray
table. The Longitudinal Lock Release button on the User Interface controls the motion of the bridge along
the rails.
The Optima XR646 also has an optional extended bridge available. Refer to Lateral Bridge
Lengths(p. 8-85)for more information.
Telescopic Column and Carriage
The telescopic column (Figure 8-6) permits vertical travel of the X-ray tube unit. The Vertical Lock Release
button on the User Interface controls the vertical motion. The vertical load is balanced by a spring coun-
terpoise system within the carriage. The counterpoise system is equipped with a safety-locking feature
to prevent the tube unit from falling in the event of spring or main cable failure. Adding an accessory,
such as a collimator extension cylinder, may cause the suspension to be slightly out of balance. The car-
riage rides laterally within the bridge. The Lateral Lock Release button on the user interface controls the
lateral motion.
CAUTION Collimator accessory weight may not exceed 2.2 kg (5 pounds). Use special care
when using such an accessory since the tube unit tends to descend when the Ver-
tical lock is released.
CAUTION Injury may occur should the OTS lose power while an accessory is attached to the
collimator.
Longitudinal and Lateral Detents
The suspension is equipped with Longitudinal and Lateral detents to automatically apply the locks and
signal the collimator when the tube is positioned at specific SIDs (Source Image Distance), for digital table
or wallstand procedures. The locks are actuated through calibrated SID detents. For the table, the lateral
detent is set at the table’s lateral center line. For the wallstand, the lateral detent is set at the wallstand
lateral center line, and the longitudinal detent is set at SID 180cm (72 inches) and 100cm (40 inches).
Selections are made at the time of installation and usually with the focal spot over the longitudinal table
and the wallstand center line.
To Next Page
Loading...
