GE Datex-Ohmeda Aisys Carestation Reference Manual page 45

M1046983 04/08
- The processor on the Agent Delivery Board performs standard CPU tests and
establishes communications with the Anesthesia Control Board. The
Anesthesia Control Board directs other POST activities including valve
conditioning (full power for 15 seconds), reading and integrity checking of
sensor calibration data, and reporting on serial number, hardware revision, and
software revision.
- There is no processor on the M-Gas Power Supply. Local voltages are produced
for the M-Gas and available if a M-Gas is installed. The M-Gas module performs
its own POST.
• Once the DU passes all the CPU tests, the DU application is started. Part of this
application is software that enables the DU CPU to communicate with the M-Gas
module. These applications take longer to start than any other system in the
machine. When the applications have completely loaded and communication
has been established with the ACB, all the systems compatibility information is
transferred to the DU for comparison with the compatibility table created during
the last software download. If the compatibility does not match, the machine
enters the System Malfunction mode.
2 Theory of Operation
2-13