Theory of Operation
2-1
Section 2: Theory of
Operation
Overview
Theory of operation consists of two distinct subsections:
• SDN Theory of Operation
• ACC Theory of Operation
SDN Theory of Operation describes the overall system Serial Distribution
Network (SDN), its normal operating characteristics, applications, and
error conditions, the format of the SDN digital data, and the SDN system
communications protocol as well as the local distribution network (LDN)
communications protocol. The SDN system communication protocol and
data formatting assures compatibility between a variety of different
instruments communicating together over the SDN. The communication
protocol and hardware implementation is intended to be flexible enough
to accommodate a variety of communication needs in the patient
monitoring environment for the present and for future expansion.
ACC Theory of Operation describes the detailed operating theory of the
Agilent CareNet Controller (ACC). Included in this section are functional
descriptions of the Power Supply Assembly, the Terminal Interconnect PC
board, and the detailed operating principles of the Control/Driver PC
board which includes the transmit/receive driver circuitry, the retiming
circuitry, and the control circuitry.
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