B&B Electronics PCRTC Spezifikationen PDF herunterladen (Seite 15)

Documentation Number PCRTC2095 Manual 13

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 433-5105

Aging

All crystal oscillators have an aging characteristic. The

crystal used in the PCRTC uses the coldweld manufacturing

technique, which exhibits the lowest aging characteristic of 1

ppm/year. In practice, this aging rate improves significantly with

time, but for practical purposes the value of 1 ppm is adequate.

To estimate the error in your application, sum the error from

the three sources above. This estimate can be used to determine

how frequently the time should be updated using Timeset or another

method.

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