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Service Instructions
Multimobil 5C
Siemens Ltd. Med India
Version 5.0
Page 29 of 73
Copyright
©
SIEMENS LTD. All rights reserved. For internal use only
6 CCU AND CAMERA CONTROL
6.1 INTRODUCTION
The TV camera has the following features
A recursive filter circuit reduces X-ray quantum noise and a motion detection function
provides sharp images of quick-moving objects while reducing noise.
Horizontal/vertical image reversal functions The LIH (Last Image Hold) function of
image freeze. In addition to the image freeze function, the TV camera is provided with
8-frame memory. This function permits a memory image and a live image to be
switched for display on TV monitor. The playback image from one of the four-frame
memories can be output to a dedicated output terminal for continuous observation on
another monitor. These images can be compared against live images, freeze images,
and playback images
Image rotation function is incorporated using the slip ring mechanism in which motor
rotates the interior part of camera head. ABC (Automatic Brightness Control) signal is
generated in camera to control the output X-ray.
The camera system comprises of :
(1) Camera Head including lens .
(2) Camera Control Unit (CCU)
6.2 RATINGS
TV SYSTEM
CCIR 15.625kHz(H), 50 Hz(V)
(625lines/25frames)
CCD
½ inch format, interline transfer
Effective number of pixels CCIR 752 (H) x 582 (V)
Sync. method Internal sync.