Two Technologies JETT XL, Руководство пользователя

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O
PERATION
3-6
45-K
EY
K
EYPAD
M
ODIFIER
K
EYS
The following modifier keys (located on the bottom of a standard keypad) enable you to access the various
functions that can appear on a key.
Modifier keys take effect when first pressed and typically remain in
effect until you press another key, unless its another modifier key (see Table 3-2 ). Optionally equipped units
can use LEDs to indicate the selection of a modifier key. Figure 3-8 provides examples.
Figure 3-7: 45-Key Keypad Modifier Key
A
Delete
•
CTRL and ALT Keys —operate in the same manner as on conventional PCs, except that by default
they have a one-time locking action to facilitate one-handed operation.
SHIFT Key —unlike conventional PC keyboards, the SHIFT key enables you to access symbols,
punctuation marks and navigation arrows rather than shift alphabetic keys to uppercase. By
default, the SHIFT key has a one-time action. However, you can press the Shift key twice and lock
the keypad into Shift mode, wear each subsequent key press will only access characters that appear
in the upper left of a key. Pressing the Shift key a third time will release Shift mode.
On standard JETT 45-key keypads, the functions and characters accessed via the SHIFT key appear
in the upper left of a key (shaded in light gray in
Figure 3-8 ).
5.
2ND Key — shifts the numeric keys to corresponding function keys (1 = F1, 2 =F2, etc.) that are
found on conventional PC keyboards. It also shifts other keys for punctuation, non-printing
characters (such as Delete and TAB), and PC key definitions (such as Page Up, Page Down, Home,
Insert and Caps Lock).
On standard JETT 45-key keypads, the functions and characters accessed via the 2nd key appear at
the bottom of a key, (shaded in dark gray in
Figure 3-8 ).
Like the Shift key, the 2ND key has a default one-time action and a locking mode (i.e., pressing
the 2ND key twice will lock the keypad into 2ND mode).
Table 3-2: Modifier Key Actions
Key Presses Result
A Lowercase “a”
Shift & A Move cursor left one position
2ND & A Delete Character
2ND & Caps Lock Uppercase “A”