INFICON Maxtek PM-700 Plating Monitor - Manual (Page 79)

PM-700 SERIES PLATING MONITOR
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3. Measure the actual thickness of the plating.
4. If the displayed thickness is lower than the measured thickness, increase the
Acoustic Impedance until they are matched. If the displayed thickness is
higher than the measured thickness, decrease the Acoustic Impedance value.
Stop when the displayed thickness agrees with the measured thickness.
This calibrates the acoustic impedance for the material being deposited.
Record these specific parameters determined above for future reference.
Table 20 Summary of Calibration Adjustment
SUMMARY OF CALIBRATION ADJUSTMENT
Thickness Material Density Tooling Factor Acoustic Impedance
Display is greater than
actual Increase Decrease Decrease
Display is lower than
actual Decrease Increase Increase