Curtiss-Wright has developed reliable, high performance Ethernet interface modules and rugged switches that allow data acquisition units to be interconnected in an Ethernet network. In such a network, setup, data acquisition and synchronization occur over a single Ethernet connection, leading to significant savings in wiring, complexity and weight.
Standard protocols are used for programming (TFTP) and health status monitoring (SNMP). The managed switches transmit IEEE 1588 Precision Time Protocol (PTP) packets to synchronize a system typically to better than 100ns, even across large distributed systems. There is no adaptive or dynamic switch behavior, as the Ethernet data output of the DAU is predictable and known in advance. This deterministic acquisition and transmission facilitates coherency.
Data is optimally packetized for Ethernet transmission and recording, but can be also be converted to many other industry standard protocols. This facilitates hybrid system (e.g. PCM DAUs) integration into an Ethernet system or enables Ethernet data to be converted to PCM for telemetering.