Yuan Gao et al 2008 Metrologia 45 S34 doi:10.1088/0026-1394/45/6/S05
Yuan Gao, Xiaoxun Gao, Aimin Zhang, Weibo Wang, Dayu Ning, Chen Wang, Dawei Li, Xiaojin Liu, Nianfeng Liu, Ping Wang, Mingshou Li, Pingwei Lin, Weiliang Chen, Yige Lin and Tianchu Li
Show affiliationsTA(NIM) is being updated now. The new TA(NIM) uses an active hydrogen maser as a reference clock, and the frequency of TA(NIM) is steered by an algorithm to keep it the same as the NIM4 fountain clock, which is NIM's primary frequency standard. This paper introduces the generation of new TA(NIM), including the equations to predict maser frequency and the steering algorithm. The time difference and the frequency difference between the new TA(NIM) and UTC are also reported.
Issue 6 (December 2008)
Received 25 June 2008, in final form 23 October 2008
Published 5 December 2008
Yuan Gao et al 2008 Metrologia 45 S34
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