Mindray Accutorr 3 - Front Housing Assembly

2-3
2.4 Front Housing Assembly
Main Board
The main board is the control center of the equipment. It provides communication and
display functions, including:
 Communication with SpO
2
board, and NIBP module through serial ports, starting
parameter measurement, and reading measured results;
 Communication with Predictive temperature module through serial ports;
 Communication with power management board through serial ports;
 Extending an RS232 serial port;
 Control over the Segment-code LCD display through I2C;
 Providing backlight drive for segment-code display;
 Recognition of keypad actions, and providing corresponding response;
 Control over the beeper through IO port; and,
 Providing 24 hour timing via the internal real time clock.
Keypad
The keypad contains the power switch, function keys and AC Battery indicator etc.
Main Board
Keypad