Document No: LT0117
F4000 LCD Operator's Manual
System Description
Issue 2.38
19 April 2002
Page 2-15
LCD KEYPAD NUMBER ENTRY (CONTINUED)
If the "CLEAR" key is pressed when no number has been entered, the LCD keypad will "step
back" to the menu or display what was shown before the number was requested.
Pressing the "ENTER" key signals the LCD keypad that the number entry is complete, and
that the number should be checked for validity. If it is valid, the next stage in the menu is
displayed. Note that various shortcuts may also be permitted to end number entry and to
automatically select an option from the next menu. Refer Section 2.3.5.
2.3.5 COMMAND ENTRY SHORTCUT
To allow operators to perform functions quickly, the LCD keypad provides some shortcut
sequences. These allow faster access to functions by shortening the key entry sequences.
Some menus consist of 2 or more menu displays. The next set of options is displayed by
selecting the "MORE" option. In a number of cases, menu options in a subsequent display
can be selected by pressing the keypad key that equates to the selection in the subsequent
display (not the number key that would be used to select the option if that menu was
displayed).
As an example, the RECALL menu has two displays. The ZONE option is in the second
menu display.
To access the recall zone menu, an operator can either:
(i)
Press the "RECALL" key to access the RECALL menu,
Press the "RECALL" or "4" key to access the second display (MORE option),
Press the "1" or the "ZONE" key to access the "ZONE RECALL" display,
or alternatively,
(ii)
Press the "RECALL" key to access the RECALL menu,
Press the "ZONE" key to access the ZONE RECALL menu.
In general, the "ENTER" key is pressed to indicate that entry of a number is complete.
In some of cases, other keys may be pressed which have the same effect as the "ENTER"
key, but also provide a shortcut by automatically selecting an option from the next menu.
As an example, to Reset Zone 15, an operator may enter either of the following key
sequences.
(i)
"ZONE", "1", "5", "ENTER", "RESET", or
(ii)
"ZONE", "1", "5", "RESET".
The "NEXT" and "PREV" keys can be used in a number of menu options to change the
selection. For example, when the zone function menu is displayed ("RESET, ISOLATE,
RECALL, TEST, SET") a zone number is displayed along with the zone description.
Pressing the "NEXT" key will select the next numbered zone, pressing the "PREV" key will
select the previous numbered zone. Any subsequent menu option entered will act upon the
newly selected zone.
In some cases, the "NEXT" and "PREV" keys may not be valid, if stepping to the next or
previous device would result in an invalid selection, e.g. zone testing an ACZ.
The Point number entry prompt has a special entry shortcut. If no point number has been
entered when the "Enter" key, or any other valid shortcut key, is pressed the F4000
automatically selects the first configured point, if any.
