Measurement assurance in traceable time dissemination
- Resource Type
- Conference
- Authors
- Shan, Y.; Chua, H.A.
- Source
- Conference on Precision Electromagnetic Measurements. Conference Digest. CPEM 2000 (Cat. No.00CH37031) Precision electromagnetic measurements Precision Electromagnetic Measurements Digest, 2000 Conference on. :82-83 2000
- Subject
- Fields, Waves and Electromagnetics
Time measurement
Time dissemination
Clocks
Delay
Network servers
Frequency synchronization
Uncertainty
Modems
Telephony
Productivity
- Language
In disseminating time, National Metrology Institutes have to ensure that time information received by the users is traceable and uncertainties are evaluated. This paper describes two time distribution systems developed at PSB-a synchronised digital clocks-cluster system, and an automated computer time distribution system. Results of evaluation show that the uncertainties of a few tens of millisecond for both are achievable.