1. SJ/Z9154.1-87 (IEC444-1 (1986)) Measurement of quartz crystal unit parameters by zero phase technique in a π-network Part one: frequency and resonant resistance measurements.2. SJ/Z9154.2-87 (IE...

1. GB/T 12273-1996(IEC1178-1:1993) Quartz crystal units -- A specification in the quality assessment system for electronic components--Part 1: Generic specification2. GB/T 16516-1996(IEC1178-2:1993...

Frequency usually refers to the nominal frequency, that is, resonant frequency regulated by contracts and products specification. Frequency scope can be gained by oscillation mode and crystal holde...

Problem and phenomenon: The oscillation of circuit upon which quartz crystal resonator installed is not stable, some fail to oscillate.Cause analysis: There is negative resistance value on the des...

Problem and Phenomenon: After installing quartz crystal resonator and electro-circuit, frequency is not in accordance with the required value, which will make electro circuit not work. ...

Problem: 20-30% qualified crystal resonators before delivery was recognized as unqualified by customers during their acceptance check.Analysis: It is caused by systematic error of measuring equipme...