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3. SPINDLE SERVO AND LOW PASS FILTER
The 0.033nF and 20K
Ω
connected to SMEF (Pin 25) form the 200Hz low Pass filter. And the carrier
component of spindle servo error signals is eliminated. In the CLV – S mode, SMEF becomes L and
Pin25 LPF fc lowers, strengthening the filter further.
FL8550
21
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