How to calibrate?

With the display showing CAL
 press the PRINT key. The display will change to show the
current setting 0 (0=NO). If the scale has been previously calibrated and you wish to skip
calibration and proceed to A9CC
, the Acceleration of Gravity, simply press the PRINT key and
the internal calibration factor will be retained.
To begin calibration, press UNITS to select 1 (1=YES), then press the PRINT key. After
pressing the PRINT key the display will change to LOAd
.