Which consequence results when a quadrature encoder's A/B phase relationship drifts within a CNC milling machine servo loop?

💡 Explanation

Encoder phase drift corrupts position feedback because the *encoder interpolation error* increases, destabilizing the servo loop. Therefore, positional control degrades, rather than other independent issues such as insulation failure, cavitation or lubrication, which are caused by other means.

• Which consequence results when oversampling the received signal in coherent optical receivers?
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