This parameter signifies the variance from the oscillator's output frequency and is particularly crucial for accuracy. It can be calculated in pieces per million (ppm) and is significant for purposes requiring higher precision. CDI will notify Purchaser upon receipt and inspection of returned product(s) and can recommend of refund standing. https://andyprokh.vidublog.com/30119844/5-simple-statements-about-high-frequency-crystal-oscillators-explained