The 2 oscillator circuits below are suited to using crystal oscillators in sequence or parallel mode: Significant-repetition-rate and substantial-ability picosecond regenerative amplifier according to one bulk Nd:GdVO4 crystal A timing reference incorporating one-crystal-silicon micromechanical resonator with an excellent component of more substantial than a million along with a reson... https://wavesocialmedia.com/story4546562/getting-my-bulk-crystal-oscillator-to-work