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DATA Acquisition - Instrumentation Devices

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<strong>DATA</strong> ACQUISITION<br />

Network Native<br />

ACRA CONTROL has developed reliable high performance Ethernet interface modules and rugged aggregators and<br />

switches that allow the ‘network native’ KAM-500 to be interconnected in an Ethernet network. In such a network,<br />

setup, data acquisition and synchronization occurs over a single Ethernet connection, leading to significant savings in<br />

wiring complexity and weight.<br />

Standard protocols are used for programming (TFTP), health status monitoring (SNMP) and synchronization (IEEE<br />

1588). The managed switches transmit IEEE 1588 PTP packets to synchronize a system to better than 100ns, even<br />

across large distributed systems. There is no adaptive or dynamic switch behavior as the Ethernet data output of the<br />

DAU is predictable and known in advance. This deterministic acquisition and transmission facilitates coherency.<br />

Data from an Ethernet KAM-500 is optimally packetized for Ethernet transmission and recording but can be also be<br />

converted in many other industry standard protocols. This facilitates hybrid system e.g. PCM DAUs can be integrated<br />

into an Ethernet system or Ethernet data can be converted to PCM for telemetering.<br />

Flexible Network Configuration<br />

PCM to Ethernet Link<br />

Time Source<br />

Programming<br />

Ethernet<br />

PCM<br />

Time<br />

Prog<br />

ACRA CONTROL<br />

DAUs<br />

IP Recorder<br />

Managed<br />

Grandmaster<br />

Ethernet to PCM Bridge<br />

Unmanaged<br />

Aggregator<br />

7

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