Chapter 4 Theory of Operation
HF Series X-ray Generators - Service Manual
Revision W
Quantum Medical Imaging
4-3
OVERVIEW
The following paragraphs provide theory of operation for ODYSSEY HF Series
TM
Gener-
ators. Each circuit description references a functional block diagram contained in
Chapter 6, Diagrams.
OPERATOR CONTROL PANEL CIRCUIT
NOTE: If the generator is configured with the "Q-
Connect option" as in a Q-VISION equipped sys-
tem, or if the generator is integrated to an exter-
nal imaging system’s workstation computer for
operation as the generator’s operator control
panel - refer to Appendix B, CALIBRATION (Agfa
DiRex) or Appendix D, CALIBRATION (Using
Insight) for configuration and calibration instruc-
tions. The following circuit description does not
apply to generators equipped with Q-Connect
option.
The Operator Control Panel Circuit controls the X-ray generator’s exposure set-
tings and exposure sequence, and controls the display of settings on the Front
Panel liquid crystal display (LCD). Exposure setting data is input to the Operator
Control Panel Circuit through the Front Panel key switches. The READY, PREP,
and EXPOSE LEDs located on the Front Panel are used to indicate the status of
the exposure sequence. The Operator Control Panel Circuit includes an RS-232
service connection, which allows service personnel to download data to Flash
Memory, perform X-ray generator diagnostics, and to upload non-volatile random-
access memory (NVRAM) settings.
Microcontroller U3 Operation
Microcontroller U3 is the primary controller of Operator Control Panel Circuit
functions. It has it own internal read-only memory (ROM) and random-
access memory (RAM). The 32 MHZ output from Oscillator U18 provides the
clocking input to drive Microcontroller U3. The Reset Circuit U1 monitors the
+5 VDC supply voltage; when it falls below +4.5 VDC, Microcontroller U3 is
placed in the "reset state". When the voltage returns to a level above 4.5
VDC, the Microcontroller restarts.
Data is sent to the generator via a 9-pin connector and cable connected to
the generator Logic Board. The 9-pin cable includes RS-485 communication,
hardware control lines, and power supply voltage from the generator. PREP
and EXPOSE hardware lines are routed from Open Collector Driver U16 to the
generator to indicate the state of the system to the generator.
Flash Memory U2
Flash Memory U2 holds part of the main program and all of the tables for the
LCD display screens. Flash Memory is accessed by Microcontroller U3
through the DATA/ADDRESS bus and Control Signals. On the first memory
Содержание ODYSSEY HF Series
Страница 1: ...Service Manual ODYSSEY Q VISION HF Series X ray Generators Manual Part No DC30 011 Revision W...
Страница 15: ...Chapter 1 1 SPECIFICATIONS 1...
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Страница 37: ...Chapter 2 1 ASSEMBLY INSTALLATION 2...
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Страница 93: ...Chapter 3 1 CALIBRATION 3...
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Страница 165: ...Chapter 4 1 THEORY OF OPERATION 4...
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Страница 185: ...Chapter 5 1 SERVICE INSTRUCTIONS 5...
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Страница 281: ...Chapter 6 1 DIAGRAMS 6...
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Страница 349: ...A 2...
Страница 364: ...B 1 CALIBRATION Agfa DiRex B Appendix...
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Страница 420: ...C 1 Log4View Error Logger C Appendix...
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Страница 428: ...D 1 CALIBRATION Using Generator Service Tools D Appendix...
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