Measurement of quartz crystal unit parameters - Part 11: Standard method for the determination of the load resonance frequency f<sub>L</sub> and the effective load capacitance C<sub>Leff</sub> using automatic network analyzer techniques and error correction
石英晶体元件参数的测量.第11部分:用自动网络分析仪技术和误差校正测定负载谐振频率f<sub>L</sub>和有效负载电容C<sub>Leff</sub>的标准方法
IEC 60444-11:2010 defines the standard method of measuring load resonance frequency fL at the nominal value of CL, and the determination of the effective load capacitance CLeff at the nominal frequency for crystals with the figure of merit M > 4.