Present (Swipe) Master Card to TR4030/TR4050 to enter the menu of programming mode. Then select [Setup]->[Advanced…]->[Shift length]. It allows you to set the length of shift for 2~8 digits. Set the value you like with the keypad. If you want to erase the value you just entered, press F3 key. After the value is entered, press F4 key to confirm and then press F1 key to exit.
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