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Crystal Terms Glossary

From Suntsu Frequency Control, Inc.
 

 
APP. NOTE 3 S TSU FREQUENCY CONTROL, INC. CRYSTAL GLOSSARY Aging The relative frequency change over a certain period of time and is typically expressed as a maximum value in parts per million per year (ppm/year). Typically, aging is computed within the first 30 days to 90 days and predicted
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Topics of Interest
APP. NOTE 2 S TSU FREQUENCY CONTROL, INC. OSCILLATOR GLOSSARY Aging The slow change of a frequency with time, if all other influences are held constant. The primary causes are mass transfer and stress... (Read More)
APP. NOTE 6 S TSU FREQUENCY CONTROL, INC. CRYSTAL LOAD CAPACITANCE The most frequent error in specifying load capacitance is mistaking that the value of the capacitors are the same as the crystal load... (Read More)
APP. NOTE 5 S TSU FREQUENCY CONTROL, INC. CRYSTAL EQUIVALENT CIRCUIT The equivalent circuit of a quartz crystal is as follows: Fig 1. R1 C1 L1 C0 The equivalent circuit consists of L1 (motional... (Read More)
APP. NOTE 1 S TSU FREQUENCY CONTROL, INC. CRYSTAL AND OSCILLATOR HANDLING PROCEDURES 1. Mechanical Shock: Because of the fragile nature of the crystal blank, extreme care should be observed when... (Read More)
David Owen Overview An ideal frequency source generates only one output signal with no instability in its output frequency. In reality, however, all signal sources exhibit some uncertainty in... (Read More)