Measurement of Drift and Jitter of Network Synchronized Distributed Clocks
Andrich C, Engelhardt M, Ihlow A, Beuster N, Del Galdo G (2020)
Publication Type: Conference contribution
Publication year: 2020
Publisher: Institute of Electrical and Electronics Engineers Inc.
Conference Proceedings Title: IFCS-ISAF 2020 - Joint Conference of the IEEE International Frequency Control Symposium and IEEE International Symposium on Applications of Ferroelectrics, Proceedings
Event location: Virtual, Keystone, CO, USA
ISBN: 9781728164304
DOI: 10.1109/IFCS-ISAF41089.2020.9234926
Abstract
We propose a measurement setup for simultaneous measurement of drift and jitter of network synchronized distributed clocks using only off-the-shelf components. A network interface card with hardware timestamping capability and a local GPS-synchronized PTP grandmaster combined with appropriate post-processing enable absolute time measurement with sub-microsecond accuracy. The setup is explained in detail and its use exemplified by a 34 day measurement campaign. By polling a selection of globally distributed, GPS-synchronized NTP servers, delay asymmetry measurements were enabled. A detailed analysis of results illustrates the time-variant statistical properties of the jitter.
Involved external institutions
Technische Universität Ilmenau
Germany (DE)
Fraunhofer-Institut für Integrierte Schaltungen (IIS)
Germany (DE)
Germany (DE)
Fraunhofer-Institut für Integrierte Schaltungen (IIS)
Germany (DE)
How to cite
APA:
Andrich, C., Engelhardt, M., Ihlow, A., Beuster, N., & Del Galdo, G. (2020). Measurement of Drift and Jitter of Network Synchronized Distributed Clocks. In IFCS-ISAF 2020 - Joint Conference of the IEEE International Frequency Control Symposium and IEEE International Symposium on Applications of Ferroelectrics, Proceedings. Virtual, Keystone, CO, USA: Institute of Electrical and Electronics Engineers Inc..
MLA:
Andrich, Carsten, et al. "Measurement of Drift and Jitter of Network Synchronized Distributed Clocks." Proceedings of the 2020 Joint Conference of the IEEE International Frequency Control Symposium and IEEE International Symposium on Applications of Ferroelectrics, IFCS-ISAF 2020, Virtual, Keystone, CO, USA Institute of Electrical and Electronics Engineers Inc., 2020.
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