Duerkopp Adler 550-867 Service Instructions Manual page 87

SM Cali
Cali
"SM-Cali" and "Cali"
If during the setup the component „calibration control" has been
activated, the operator will be asked in certain intervals to check the
settings of the step motor and the thread tension sensor or to
recalibrate them.
These activities are recorded in the thread tension and step motor
calibration data base.
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