AUTOMATED FACTORY TUNING OF OSCILLATORS USING ELECTRICALLY ADJUSTABLE CAPACITORS AND PHASE LOCK
Original Publication Date: 1990-Mar-01
Included in the Prior Art Database: 2001-Nov-12
Increased demands on crystal oscillator accuracy in production radios has required that oscillators be tuned in the factory to remove initial offset error. Generally, tuning is accomplished by adjustment of a mechanical variable capacitor. This method adds labor and decreases overall reliability of the product. Thus, a solid state tuning method is more desirable.