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Space monitoring (New Device (HAMR (NTS), STO, TDMR, Triple actuator),…

- - - - Adjust TFC
  - - - Detector
        
        PES/S2S (Servo based friction force detector)
        
        Real time DFT
        
        magnitude/phase analysis
        
        baseline calibration at MFG
        
        Threshold calibration at MFG
        
        Always dithering (+/-0.1nm)
        
        IIR
        
        ABS pitch mode vibration
        
        ECS channel ADC w/ high sampling freq (~500KHz)
        
        Preamp 50KHz-500KHz BPF
        
        HMS channel sampling w/ high sampling freq (~500KHz)
        
        ECS/STO proximity sensing
        
        DC mode with TFC/ECS Bias dual dithering
        
        AC mode (RMS or P2P)
        
        Xcorr
      - Recovery process
        
        DRP call FbTFC #
        
        Switch how to recover by adjust TFC with VWI information
        
        if VWI, TFC may not be possible to push because write error occur anyway, so no more push
        
        SER/OW check
        
        Pass to upper layer (Smear diagnostic) to manage recovery
        
        FbTFC to have VWI specific criteria to judge adjust TFC such as short and longer have different criteria to apply adjust
        
        DRP to pull TFC with Read Verify
        
        DRP call OTB
        
        DRP call Legroom check
    - - OTB #
      - Dynamic Logical Depop