The Ultra Stable Oscillator (USO) from AccuBeat is a Space-Qualified Atomic Clock with an output frequency of 57.51852 Hz. This atomic clock has a frequency stability of 5E-13 (at 1 sec) and a phase noise of up to -119 dBc/Hz. It has a harmonic of less than -30 dBc and a spurious of -80 dBc. The atomic clock requires a supply voltage of 26.5-29 V and an inrush current of 1A. It has a mass of less than 2 Kg and measures 132.6 x 120 x 105 mm. The USO is radiation-hardened up to 50 krad (Si) and is specially designed for Deep Space exploration programs.
