Title :
Measurement assurance in traceable time dissemination
Author :
Shan, Y. ; Chua, H.A.
Author_Institution :
Nat. Meas. Centre, Singapore Productivity & Stand. Board, Singapore
Abstract :
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.
Keywords :
Clocks; Computerized instrumentation; Measurement uncertainty; Synchronization; Time measurement; Transfer standards; 30 ms; National Metrology Institutes; PSB; Singapore; automated computer time distribution system; measurement uncertainties; reliability; traceable time dissemination; Clocks; Delay; Frequency synchronization; Modems; Network servers; Productivity; Telephony; Time dissemination; Time measurement; Uncertainty;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.850887
