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UTC-Coordinated
Universal Time



CONTRIBUTING TO THE GLOBAL DEFINITION OF TIME

World-class
time-keeping facility

Highlights



Among the 10 best UTC facilities in the world.

3 Active Hydrogen Masers and 3 Cesium atomic clocks.


Capabilities:



  • 3x T4 Science iMaserActive Hydrogen Masers providing a stability of 2x10-16 /day.
  • 3x Agilent 5071A Cesium clocks providing a stability of 5.0x10-13 /day.
  • High resolution phase stepper (0.1 ps resolution, 0.15 ps jitter).
  • Galileo, GPS, Glonass and Beidou GNSS timing receivers.
  • Continuous multi-channel phase/frequency measurement.



HIGHLIGHTS
 

Stability up to

2E-16/day

Phase stepper resolution

100 fs

 
  • UTC Coordinated universal time ESA
  • UTC Coordinated universal time ESA
  • UTC Coordinated universal time ESA

FROM EUROPE TO THE WORLD

What else we want to share with you

You can synchronize your computer’s clock to our facility UTC(ESTC) by using the following NTP server address “time.esa.int”

The UTC facility hosts and operates a set of high performance atomic clocks (H-Masers, Cs) and generates a timescale traceable to UTC. The performance of this timescale is reported every month by the BIPM in the Circular T. The operation and performance of these clocks are continuously monitored using phase comparison (10 MHz), time interval counters and calibrated GNSS receiver chains. The UTC(ESTC) signal is distributed to the whole Laboratory through 10 MHz and 1 pps signals.



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