Model 190 Installation, Technical and Operation8400-M022-O1 Rev J Page 414.6.3 Single-Point for Span Only (Last Zero) CalibrationThis calibration method requires one test weight and establishes a newconversion factor (span) without affecting the zero calibration valuestored during the last calibration. This minimizes placing and removingtest weights and is especially useful when checking high capacity scales.This method uses two calibration points, CAL1= and CAL2=. The valueof the test weight is entered when CAL1= is displayed and the ZERO keyis pressed when CAL2= is displayed.CAL1= – First Calibration Weight1. The display will show CAL1=. This is the first of two calibrationsteps. This weight is the TEST WEIGHTS (TEST LOAD).2. Press the ZERO key.3. The display will show: CAL2=.CAL2= – Second Calibration Weight1. Place the weights on the scale platform.2. Press the TARE key to view the current setting.3. Using the UNITS/ and Fn/ keys, input the value of the test weights.4. Press the TARE key.5. Starting at the left and proceeding right, a series of dashes will appearon the display.6. Next, starting at the left and proceeding right, the dashes willdisappear, after which the display will show: SetgC?.