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A new distributed instrument for real time ethernet networks: experimental tests and characterization

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4 Author(s)
Ferrari, P. ; Univ. of Brescia, Brescia ; Flammini, A. ; Marioli, D. ; Taroni, A.

This paper discusses the use of distributed instruments for performance evaluation of real-time Ethernet (RTE) networks. A new instrument, composed of several logging probes connected in different points of a RTE target network, is characterized and compared with commercially available test equipments. The most important problem in performance evaluation is the timestamp assignment to network events; special attention has been paid in measuring synchronization uncertainty among probes. In fact, experimental results show a synchronization accuracy less than 150 ns on timestamp assignments among probes of the same instrument. In the last part of the paper, a sample application on a real network has been described, illustrating the use of the proposed instrument.

Published in:

Emerging Technologies and Factory Automation, 2007. ETFA. IEEE Conference on

Date of Conference:

25-28 Sept. 2007