Hach DR 3900 Manual Básico Del Usuario página 13

Standard programs
Tips for the use of the touch screen
The whole screen responds to touch. To choose an option, tap with a
fingernail, fingertip, an eraser or a specialised stylus. Do not press the
screen with a sharp object, such as the tip of a ballpoint pen.
• Do not place anything on top of the screen, to prevent damage 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 move through the
list.
• Highlight an item from a list by pressing it once. When the item has
been successfully selected, it will be displayed as reversed text
(light text on a dark background).
Use of the alphanumeric keypad
This display is used to enter letters, numbers and symbols as needed
when programming the instrument. Unavailable options are disabled
(grayed out). The icons on the right and left of the screen 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 the screen. A
space can be entered by using the underscore on the YZ_ 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 keyboard
layout) or a hand-held USB barcode scanner.
Table 1 Alphanumeric keypad
Icon / key Description Function
Toggles the character input mode between upper
ABC/abc Alphabetic
and lower case.
Punctuation, symbols and numerical sub- and
# % Symbols
superscripts may be entered.
123 Numeric For entering regular numbers.
CE Clear Entry Clear the entry.
Deletes the current character and goes back one
Left Arrow Back
position.
Right
Next Navigates to the next space in an entry.
Arrow
English 13