Figure 2. NICT’s system for the generation of Japan Standard Time (IMAGE)

National Institute of Information and Communications Technology (NICT)

Figure 2. NICT’s system for the generation of Japan Standard Time

Caption

NICT’s system for the generation of Japan Standard Time now includes adjustment by the optical lattice clock NICT-Sr in addition to the ensemble of commercial cesium clocks. For redundancy, three time signals are generated, based on separate hydrogen maser source oscillators. One of them is selected as UTC (NICT) and Japan Standard Time is generated by adding 9 hours of time zone adjustment. The result is distributed by various means, including NTP, longwave radio signals and a telephone service.

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National Institute of Information and Communications Technology (NICT)

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