Specifications

2. EXPLANATION OF OPERATION
Item n°. : W1404621 Page 2-7 Version 01.02
2.4. Left keypad
The « left keypad » printed circuit (W4P141661) is used to access the controls :
- PB3 (B4) is used to disable the sound alarms for 3 minutes,
- PB4 (B4) is used to print a graph,
- PB5 (A5) is used to freeze a trace on the screen,
- PB6 (B5) is used to start and stop NIBP measurements.
2.5. Right keyboard
The « right keypad » printed circuit (W4P141637) is used to display the status of the unit and
access the controls.
Displaying is done via the following LED :
- LD2 (C6) indicates that the mains power is present.
The controls are operated by the rotating button on the front of the unit connected to J3 (D7)
and by the PB2 (C4) key which is used to access the main menu :
The signals from tabs 7 and 9 of J2 (D2) are used by transistor T1 (D3) to control the back-
lighting of the screen via J4 (D7).
2.6. CPU SBC-456/E
The CPU SCB-456/E board is an OEM board from AAEON.
For more details about this board, refer to the user’s manual « SBC-456/E » AAEON.