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, up to 30 MHz
Publication date:
Nov 20, 2003
General information
90.93Standard confirmedJun 29, 2026
CENELEC
CLC/SR 49
Piezoelectric and dielectric devices for frequency control and selection
Specifies a simple method of measuring load resonance frequency. The method uses the change in resonance frequency which occurs when a load capacitance is inserted in series with the crystal unit.
Life cycle
NOW
PUBLISHED EN 60444-4:1997 90.93
Standard confirmed Jun 29, 2026