GE Brivo OEC 715, Service Manual, Page: 72 / 551

Brivo OEC 715/785/865/865 Mobile C-Arm X-Ray Product Service Manual
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MCB functional Block
MCU function
- Read the registers of peripheral controller to get the status of sub-systems, such as getting the alarm
status, etc.
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Write the registers of peripheral controller to control the status of sub-systems, such as PIO
(Programmable Input Output), light indicator, buzzer, etc.
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Sample watchdog bite signal from supervisor circuit to check peripheral is still working
-
Check all switch signals to respond user’s input
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Communicate with Control Panel board to get the key input and control the LED output
- A/D convert all analog signal, such as shutter location, temperature of oil tank, mA feedback, KV
feedback, etc.
-
Communicate with DAC to control mA and KV output
- Communication with Workstation
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Communication with peripheral controller to report the working status of MCU
Peripheral controller function
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Sample the status of input pins, and record them into status registers polled by MCU
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Set output pins according to the control registers accessed by MCU
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Generate interrupt signal of alarm to MCU in order to request the processing
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Generate exposure control signals
-
Check switch stuck error
- Control mAS control signals
Operational amplifier circuit function
-
Amplify or adjust input analog signals, such as kV feedback, mA feedback, temperature, shutter
location sample signal, and output those signals to the ADC unit (Analog Digital Converter)
-
Amplify or adjust analog signals output from DAC (Digital Analog Converter), such as kV setting, mA
setting, mA preheat, and output those signals to other sub-systems
-
mA PI control
Transceiver
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Transceiver circuit is responsible for regulating voltage level and supplying driving current.