Detector; Pca-Fe2 Board; Fpc-Uif Board - Canon CXDI-80C Service Manual

1.3 Detector

The detector comes in the form of a flat panel detector (FPD) for obtaining the X-ray images.
The images obtained are transferred to the image capture computer using Gigabit Ethernet by
wireless or wired means. The X-rays are first converted into visible light using a fluorescent
screen, and then stored electrically in the detector. The stored electrical signals are then loaded
from the detector, and A/D conversion is performed.

1.3.1 PCA-FE2 board

This board provides the functions for controlling the detector inside the detector and
communicating between the image processing unit and X-ray control unit. Its main functions are
described below.
(1) After the output data of the detector has been subjected to detector drive control and A/D
conversion, the board receives the data, and stores it in the memory.
(2) It stores the defect information files in the memory.
(3) It obtains the difference between the images taken and fixed pattern noise (FPN) images
obtained immediately after, and initiates offset compensation.
(4) Using wireless or wired means, it performs communication with the image capture computer
and X-ray interface box.
(5) It performs communication with the battery mounted inside the detector to monitor the
remaining battery level.
(6) It automatically sets the wireless communication parameters (including ESSID, WEP key,
channels and IP addresses) intrinsic to the environment where the detector is used through
the infrared communication unit (IrDA).
(7) It measures the temperature inside the detector using a thermal sensor.
(8) It detects the setting of the selector switch provided on the PCA-BAT board to enable the
startup program to be changed.

1.3.2 FPC-UIF board

This board contains the infrared communication (IrDA) unit, LED display (blue: Power, green:
Ready, blue-green: Link) and power switch, and it relays the signals as an interface with the
PCA-FE2 board.
For the display patterns of the LED on detector, please refer to the table in 7.1.6 Registration of
detector in Chapter 2 Installation procedures.
3 . Description of Functions
3 .
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