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Chapter 1: Overview 1-19
As you press a key, a single audio beep confirms the key action. If the key-
press is not valid for the current screen or mode, three rapid beeps sound to
indicate that no response is available. If required, you can turn the key beeps
off as part of your set up procedure (see Chapter 7).
Soft Keys
The four keys below the screen are called soft keys because their functions
change according to the operation. The soft keys are grouped into related sets
and subsets providing access to the various functions. The soft key labels are
displayedonthescreenjustabovethekeys.Thedefaultsoftkeysaredisplayed
until you press a key, or select an item on the screen; the soft keys associated
with the action are then displayed.
The currently selected soft key optionis shown by its gray background. If the
key text is displayed in gray rather than in black, it is not currently available.
When you press a soft key one of the following happens:
i. Theassociated operation is actioned, e.g. NORTH UP.
ii. A sub-set of soft keys is displayed, providing further functions.
iii. A pop-up menu is displayed, providing further options.
As with dedicated keys, when you press a soft key a single audio beep
confirms the key action. If the key-press is not valid for the current screen or
mode, three rapid beeps sound to indicate that no response is available. If
required, you can turn the key beeps off as part of your set up procedure (see
Chapter 7).
Pop-Up Menus
Pop-up menus usually provide set up options. When a pop-up menu is on-
screen, a set of associated soft keys is also displayed as shown in Figure 1-7.
You use the trackpad to select an option from the menu, then use the
appropriate soft key to set the option. For example, you can toggle the OFF
TRACK ALARM on/off.
TARGETS SCREENHDG MODE
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RDR CHRT
81186_3.book Page 19 Thursday, August 22, 2002 8:23 AM