IEC 60444-1:1986 Measurement of quartz crystal unit parameters by zero phase technique in a pi-network - Part 1: Basic method for the measurement of resonance frequency and resonance resistance of quartz crystal units by zero phase technique in a pi-network
Specifies a simple method of measurement of resonance frequency and resonance resistance of quartz crystal units and describes a suitable measuring network for use over the frequency range 1 MHz to 200 MHz.