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Thats one expensive clock !!

Posted by AbeCollins (A) on February 5, 2004 at 07:51:59

In Reply to: REVIEW: DCS Verdi/Elgar/Purcell/Verona SACD Player posted by Tyke on February 4, 2004 at 22:30:55:

"Calibrated to better than 1 part per million, this clock was over 10 times more accurate than the Elgar's built in clock, Although it was stated that this would drift over time, dCS promised that the improved performance and stability of the clock would yield extraordinary results."

Interesting read but $7000+ USD for a 1ppm CD clock doesn't make sense to me. A low phase noise 1-part per million (1x10E-6) clock can be had for less than $100 USD in the form of a temperature compensated crystal oscillator (TCXO).

Oven controlled crystal oscillators (OCXO) yield better than 1-part per billion (1x10E-9) for a few hundred dollars maximum. That's three orders of magnitude better than the DCS clock at 1ppm.

And for less than $2000 USD one can buy a small atomic clock (rubidium oscillator). These are often used aboard space bound satellites and yield low phase noise and better than 5x10E-11 stability and aging. Ok lets see, that would be nearly 5 orders of magnitude better than the DCS clock at 1/3 the price.

I don't get it.

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