skyzy, разобрался. Необходимо указать значение АЦП в С-1:
Цитата: How to Confirm Span Calibrated A/D Value(C – 1)
(1) To go to calibration mode, press the [POWER] key while pressing the calibration switch. The
display shows “CAL” three times, and then “C-0”.
(2) Press the [MODE] key to go to “C – 1” mode.
(3) Press the [SET] key, span calibrated A/D value is shown on the display.
(4) Press the [ZERO] key, “0” is shown on the display.
(5) Place full capacity on the platter. If your scale is DBII-150, DB-II-300, “150,000” should be
displayed. If the number is not “150,000”, press the PRINT or HOLD key to have number up or
down.
(6) Press the [SET] key, “C – 1” is shown on the display.
Затем провести калибровку с новым значением.