25Section 5 Standard programs5.1 Overview5.1.1 Tips for using the touch screenThe whole screen responds to touch. To choose an option, tapwith a fingernail, fingertip, an eraser or a specialised stylus. Donot touch the screen with sharp objects, such as the tip of aballpoint pen.• Do not place anything on top of the screen, to preventdamage or scratches on the screen.• Press buttons, words or icons to select them.• Use scroll bars to move up and down long lists very quickly.Press and hold the scroll bar, then move up or down to movethrough the list.• Highlight an item from a list by pressing it once. When theitem has been successfully selected, it will be displayed asreversed text (light text on a dark background).5.1.2 Use of the alphanumeric keypadThis display is used to enter letters, numbers and symbols asneeded when programming the instrument. Unavailable optionsare disabled (grayed out). The icons on the right and left of thescreen are described in Table 1.The central keypad changes to reflect the chosen entry mode.Press a key repeatedly until the desired character appears on thescreen. A space can be entered by using the underscore on theYZ_ key.Press Cancel to cancel an entry, or press OK to confirm an entry.Note: It is also possible to use a USB keyboard (with US keyboardlayout) or a hand-held USB barcode scanner (refer to Section 9,page 137).Table 1 Alphanumeric keypadIcon / key Description FunctionABC/abc Alphabetic Toggles the character input mode between upper and lower case.# % Symbols Punctuation, symbols and numerical sub- and superscripts may be entered.123 Numeric For entering regular numbers.CE Clear Entry Clear the entry.Left Arrow Back Deletes the current character and goes back one position.Right Arrow Next Navigates to the next space in an entry.
