Resonator frequency stability contribution to the performance of ultrastable oscillators before and after integration

The aim of this article is to present the performances of the instruments developed for the measurement of 5 MHz ultra-stable resonators, before and after being integrated in an oscillator. The chosen resonator has an estimated stability of several 10^-14. Intrinsic noise floor of these benches are about 7 to 9.5×10^-15.