"joyceboya" <joyceboya.2s3d6f@no-mx.wirelessforums.org> wrote in message
news:joyceboya.2s3d6f@no-mx.wirelessforums.org...
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| Crystal oscillators are oscillators where the primary frequency
| determining element is a quartz crystal. Because of the inherent
| characteristics of the quartz crystal the crystal oscillator may be
| held to extreme accuracy of frequency stability. Temperature
| compensation may be applied to crystal oscillators to improve thermal
| stability of the crystal oscillator.Oven Controlled Crystal Oscillators
| are the best of crystal oscillators,which is high stability and low
| noise.Usually OCXOs are used in numerical apllications,such as cellure
| base station,telecom,satcom,and scientific R&D.
| If you learn about more,recommend you a website:
| 'Boya co.,ltd'