EN 60444-4:1997
用π型網(wǎng)絡(luò)的零相位技術(shù)測量石英諧振器參數(shù).第4部分:石英晶體元件負荷諧振頻率fl,負荷諧振電阻Rl的測量方法,以及石英晶體元件其他導(dǎo)出值的計算方法(頻率小于30MHz)
Measurement of Quartz Crystal Unit Parameters by Zero Phase Technique in a Pi-Network Part 4: Method for the Measurement of the Load Resonance Frequency fL, Load Resonance Resistance RL and the Calculation of Other Derived Values of Quartz Crystal Units,