Quartz Crystal Production - Testing
After seal, the resonators are placed into environmental screening to verify their electrical performance and frequency characteristics over the required operating temperature range. Quartz resonators are shown above loaded into one of Bliley's many ATE systems. In addition to testing for temperature performance, precision resonators are subjected to accelerated life testing which includes high temperature bakes at over 200 degrees Centigrade. This accelerated life testing is one of the methods used to confirm the expected yearly rate of frequency drift most often referred to as aging.
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