Enter/Exit Programming Mode
90 DSM0400 Fixed Mount Area Imager Bar Code Reader
Code 39 Check Character Transmission
Enable this option to transmit the check character along with Code 39 barcode 
data.
Code 39 Check Character Transmission = Don’t Send
Code 39 Check Character Transmission = Send
Code 39 Check Character Calculation (continued)
Code 39 Check Character Calculation = Enable Italian Post 
Check
Code 39 Check Character Calculation = Enable Daimler 
Chrysler Check