CLL Forces

The CLL forces panel (Figure 82, 84, 85) provides functionality to set the write force voltages for patterning.

clf Open the CLL forces panel

Write Forces Tab

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Figure 82 Write Forces Tab

Session Mode: Read-Only or Write-Read

The session mode can be changed only in the floorplan panel.

Write Force Voltages:

Init Automatically: Derive write forces from the previous session

Init with Linear Ramp: Set a linear write force ramp (Figure 83)

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Figure 83 Write Force Voltages Linear Ramp

Min (V): The force voltage corresponding to the minimum depth

Max (V): The force voltage corresponding to the maximum depth

Enable Depth Feedback: Optimize the write force voltages during patterning

Get Depth Feedback Data: Send detailed information about the depth feedback process from the real-time controller

Read Corrections: Correct read artifacts during reading

Thermal Conductance: Correct thermal conductance image

Reader Drift: Correct reader drift

Depth Feedback Mask Tab

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Figure 84 Depth Feedback Mask Tab

Edge-Based Masking

# Dilation Iterations: Edge thickness parameter

Depth Feedback Data Tab

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Figure 85 Depth Feedback Data Tab

Iteration Data

Iteration #: Depth feedback iteration number

Action: Depth feedback action performed

Read Line: Corresponding read line

Write Line: Corresponding write line

# Samples: Number of samples

# Seen Levels: Number of seen levels

Z Drift Correction Tab

The Z drift correction tab (Figure 86) provides functionality to correct drift in forward height during a CLL Runtime operation. The height difference between the forward height and the surface in the read margins is measured and held constant. This improves the stability of the writing parameters.

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Figure 86 Z Drift Correction Tab

Enable Z Drift Correction: Drift correction should be enabled during normal operation. The correction may fail if the read margins are not flat, e.g. when stitching fields.