2 Theory of Operation Integrated Monitor Theory of Operation
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Philips Clinical Network
The monitoring system may be connected to the Philips Clinical Network, for example to provide
central monitoring capabilities or other network services. This connection may be through a normal
wired connection or through a wireless connection.
The monitor supports the connection of an external off-the-shelf wireless adapter. This allows a simple
field upgrade as well as a technology upgrade in the future. Switching between wired and wireless
networks is automatically triggered by the plugging or unplugging of the network cable.
The Philips Clinical Network protocols function very similarly to the protocols used on the internal
LAN.
After configuration, the monitoring system sends the digitized patient signals including wave data,
numerical data and status information onto the network. Control data representing user interactions
can be exchanged between the monitoring system and a central station bi-directionally.
Additional protocols are supported for networked applications, for example for the other bed overview
function, which allows viewing of monitoring data from other patients on the network.
For plug and play operation, the monitoring system uses the standard BootP protocol to automatically
acquire a network address.
How does the Support Tool Work with the Monitor
The support tool is an NT application typically installed on the laptop of a customer engineer or a
biomedical engineer working in the customer’s own service department.
The purpose of the support tool is to upgrade, configure and diagnose all monitoring components
(modules, measurement servers, and monitors) in the system over the network. The monitors route
network traffic between the Philips Clinical Network to the internal LAN.
The service protocol developed for this purpose uses a raw access to the devices without the need for IP
addresses etc. over a standard customer network installation, so that even defective devices can be
upgraded as long as the few kBytes of initial boot code are working. The boot code itself can also be
upgraded using the same protocol.
The tool allows access to internal service information and to serial numbers. It can be remote-
controlled, for example via a dial-up connection from a response center, provided the proper
infrastructure is in place.
For details see the Instructions for Use for the Support Tool.
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