19 © 2015 unitech Electronics Co., Ltd. All rights reserved.unitech is a registered trademark of unitech Electronics Co.,Ltd3.7 Matrix 25 ParametersA. Check Digit TransmissionDo Not Calculate Check Digit *Calculate Check Digit & TransmitCalculate Check Digit & Not TransmitB. Set Up Code LengthTo set the fixed length:1. Scan the “Begin“ label of the desired set.2. Go to Numeric Bar Codes in Appendix A, scan label(s) that represents the length to be read.3. Scan the “Complete“ label of the desired set. Repeat the steps 1 - 3 to set additional lengths.Variable *Fix Length (2 Sets Available)1. 1ST Set Begin 3. 1ST Set Complete1. 2nd Set Begin 3. 2nd Set CompleteMinimum Length1. Begin 3. Complete2. Numeric BarCodes (Appendix A)2. Numeric BarCodes (Appendix A)2. Numeric BarCodes (Appendix A)