CRYSTAL OSCILLATOR PARAMETER MEASURING DEVICE Russian patent published in 1997 - IPC

FIELD: measurement technology; measurement of transient functions in setting wave frequency and amplitude of crystal oscillators and their coefficient of nonisochronism. SUBSTANCE: device has power supply 2 for oscillator 1 under analysis, first and second frequency dividers 7 and 8, respectively first and second storage units 13 and 14, respectively, time interval meter 11, recorder 16, Newly introduced in device are detector 3, storage-retrieval unit 6, analog-to-digital converter 9, delay element 10, calculator 12, and unit 15 for comparing difference of codes during moment of time when transient function slope is set at maximum frequency; oscillator frequency drift Δf_m and wave amplitude U_у are measured, and coefficient of nonisochronism β_n=Δf_m/U2у