From Mac Computers - Mustek S400W User Manual

Calibrate

From Mac computers

1. Press iScan Air app. Press the
Settings at the top-left corner of the Mac's
screen, select the Calibrate setting.
Remove the plastic foil on the Calibration
2.
Card, insert it in the Feed Slot with the arrow
mark facing up and pointing to Wireless
Scanner.
3. Tap the Calibrate button.
* The Calibration Card will be automatically pulled into
Wireless Scanner, wait until the Card is ejected with
a 'Calibration done.' message. Tap the OK button.
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