This standard applies to the quality classification of quartz crystal oscillators (ordinary crystal oscillator PXO, temperature compensated crystal oscillator TCXO, constant temperature crystal oscillator OCXO). This standard only gives key technical indicators and is not a complete standard. It must be used together with GB 12274-90 "General Specifications for Quartz Crystal Oscillators" and related detailed specifications.
SJ/T 9570.3-1995 history
1970SJ/T 9570.3-1995 Quality grading standard for quartz crystal oscillators