Initial Zero Perform an initial zero if necessary when a calibration is out of range message is shown. Refer to Maneuvering on page 18 for parameter selection and value change. select P377 invoke initial zero, enter 1 current zero count 1 2 zero calculation frequency count displayed 1 2 zero deviation 1 2 zero deviation accepted initial zero count = #### 1 2 Recalibration Perform Initial Span 7ML19985DJ01 Milltronics BW100 - INSTRUCTION MANUAL Page 33