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User Guide
2.1.1 Data entry operation
The LCD and Keypad are used in various operations for data entry such as zone de
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scriptions, dates, numeric settings etc. During data entry mode a designated area on
the LCD is used for the input. The LCD characters allocated for the data field are en
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closed in square brackets Figure 2. If the length of the data is greater than the available
LCD character space, horizontal scrolling takes place. In this case the Left or Right (or
both) square brackets enclosing the data are changed to "less than" or "greater than"
signs indicating the direction of existing but not visible characters.
The data entry takes place in two different modes:
- Numeric data entry:
The keypad is in numeric mode, and every time a key is pressed
the corresponding number is produced on the screen.
- T9 entry mode:
Each key has a set of characters (4 or 5) that are selected by prompt
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ly pressing the same key as many times needed. The characters allocated to each key
are printed above them on the keypad mask (Figure 1). This mode is very popular with
cellular phones and used for SMS text messaging.
>Data entry________]
<ata entry field Dat]
[eld Data entry fiel>
Figure 2.
Data entry examples
The operation of the keys during data entry is as follows:
<0> to <9>:
Characters 0-9, A-Z and symbols.
<ALRM>:
Switch keypad mode between Numeric and T9.
<
FAULT>:
Delete the character that the cursor is over.
<CLR>:
Cancel editing and exit data entry mode.
<ENTER>:
Accept editing saving data field and exit data entry mode.
<Left Arrow>, <Right Arrow>:
Move cursor in the corresponding direction.
<Up Arrow>, Down Arrow>:
Increase or decrease the character or numeric value
highlighted by the cursor.
