Measurement and test techniques in production of precision frequency control devices

We have researched, developed and applied a series of measuring and testing technologies in the mass production and exploitation of precision frequency control devices including OCXO, TCXO, VCXO, PLL and clock modules. They have shown a key function to the performance improvement and quality guarantee of the products. In this paper we shall present turn point regulation technology and equipment of OCXO, the dynamic storage technology of crystal devices and oscillators, aging and testing techniques of mass precision oscillators, test technique of phase noise, measurement technique of frequency stability in mass production, reliability test technology. The requests include high precision, fast-speed, automated, convenient, and low-cost.