- 89 - © 2018 unitech Electronics Co., Ltd. All rights reserved.unitech is a registered trademark of unitech Electronics Co., Ltd.MS652 User’s Manual3.14.2 Security LevelThe engine offers four levels of decode security for delta bar codes, whichinclude the Code 128 family, UPC/EAN/JAN, and Code 93. Selectincreasing levels of security for decreasing levels of bar code quality. Thereis an inverse relationship between security and engine aggressiveness, sochoose only that level of security necessary for the application.•Security Level 0 - The engine operates in its most aggressive state, whileproviding sufficient security decoding most in-spec barcodes.•Security Level 1 - This default setting eliminates most misdecodes.•Security Level 2 - Select this option if Security Level 1 fails to eliminatemisdecodes•Security Level 3 - If you selected Security Level 2 and misdecodes stilloccur, select this security level.Note: Selecting this option is an extreme measure against mis-decoding severelyout-of-spec bar codes, and significantly impairs the decoding ability of the engine.If this level of security is required, try to improve the quality of the bar codes.Security Level 0Security Level 1*Security Level 2Security Level 3
