Datascope Accutorr Plus - CPU Hardware Controls; NIBP Hardware Functions; Main Pressure Transducer Circuitry; Over Pressure Transducer Circuitry

CPU/NIBP Module Assembly with LCD Display Theory of Operation
1 - 4 0070-10-0691 Accutorr Plus Service Manual
4. Transmits/Receives data to/from Infrared/Predictive Temperature modules
5. Manages Recorder functions
6. Manages Keypad interface
7. Provides RS232 communication to PC for software download
8. Supports Service Diagnostics
9. Supports Nurse Call feature
10. Checks error conditions
• Maintain watchdog timer
• Run-time diagnostic
11. Transmits/Receives data to/from SpO
2
module, if present
12. Controls LCD view angle
1.2.2 CPU Hardware Controls
1. Microcontroller executes the above software functions, including:
•NIBP
• Recorder
• Temperature module, PTM or IR
•SpO
2
•LCD
2. Battery Back Up Circuitry for Power Savings
• Static memory
• Non-volatile RAM for configuration and future serial number
3. Flash ROM for Program Storage and Execution
4. Static RAM for Data Storage
5. RS232 level translation for PC Download and second interface for CIS/HIS
6. Real time clock with 16K of Lithium backed up NV RAM
1.2.3 NIBP Hardware functions
1.2.3.1 Main pressure transducer circuitry
A pressure transducer and amplifier combination is provided to acquire the cuff pressure
signal.
1.2.3.2 Over pressure transducer circuitry
An over pressure transducer, independent of the main pressure transducer. Over pressure
limits are set according to the patient size.