Intermec CN51 Intermec Terminal Emulator (ITE) User Guide - Page 53

Chapter 2 - Configuring and Managing ITE • EAN Add-on settings override UPC add-on settings, if both UPC and EAN options are enabled. • If "Sys 1 UPCE" or "Sys 0 UPCE" is selected, then both UPC E number system 0 and 1 are enabled. • Code 11 does not support "No check digits." Select either 1 check digit (Chk Dig 1) or 2 check digits (Chk Dig 2) according to your bar codes. If neither check digit option is selected, then 2 check digits are used by default. About EAN/UPC Drop Leading and Drop Trailing Values Drop Leading and Drop Trailing values for UPC and EAN symbologies alter the bar code type and length. The Drop Leading value is applied first. If this value changes the bar code length, then the displayable bar code type changes. The Drop Trailing value is applied based on the bar code type and new length. As the length changes due to dropped lead characters, the behavior of Drop Trailing changes based on the new bar code type and appearance. Drop Trailing for UPC and EAN bar codes is designed to drop from the main bar code, not from the add-ons. The next example demonstrates how Drop Leading and Drop Trailing values affect ITE bar code scanning: 1 Start with a UPC-E decode with Add-on 5. 2 As shown in the following "Bar Code Type vs. Format" table, Bar Code Type equals UPC E TYPE and length equals 13. 3 A Drop Lead of 3 makes the bar code length equal to 10. Now the bar code looks like UPC-E with add-on2, so any Drop Trail value drops characters to the left of the ending 2 add-on characters. Note: A Drop Lead and Drop Trail value of 1,1 is not recommended with UPC or EAN symbologies. After the Drop Lead of 1, the bar code type and length combination may not be recognized as a valid UPC or EAN format. If a bar code type and length translation results in an invalid combination, then the bar code type and length from before translation is retained. Drop Leading and Drop Trailing operations work together as follows: 1 Translate Bar Code Type into Displayable Bar Code Type. 2 Apply the Drop Leading value based on the translated Bar Code Type. 3 Re-translate Bar Code Type with new length into Displayable Bar Code Type. 4 Apply the Drop Trailing value before the add-on based on the Translated Bar Code Type Add-On characters. 5 Re-translate Bar Code Type with new length into Displayable Bar Code Type. Intermec Terminal Emulator (ITE) User Guide 41