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The TRA85 is a high-performance rubidium atomic clock with excellent long-term stability, low phase noise, and fast lock capability. Utilizing advanced digital control and a temperature-controlled package design, it supports 1PPS and 10MHz outputs, achieving a frequency stability of 3E-12\/1s. Its 10MHz short-term stability is comparable to that of mid-range cesium clocks, offering excellent value for money. 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