12
4.
Operations
Batteries must be fresh and properly loaded before start operation.
4.1
Keyboard Operations
The keypad of the 8000 Portable Data Terminal has 21 keys. The functions of some special keys are
as follows:
SCAN
Scan a barcode
.
Press this button will trigger the scanner to read a barcode if the scanner port is
enabled.
ENTER
Enter
.
There are two enter keys on the side of the scan key. Normally the enter keys are
used for command execution or input confirmation.
ESC
Escape
.
Usually this key is used to stop and exit current operation.
BS
Back Space
.
If this key is being pressed down longer than one second, a
clea
r
code will be
sent.
ALPHA
The toggle key for Alphabet / Numeral input
.
When the system is in alpha-mode, a small icon will be shown on the display and
each numeral key can be used to generate one of the three capital letters. For
example, numeral
2
can be used to produce
A
,
B
or
C
. Pressing the same key
twice within one second, will call the letter B. Pressing the same key without
halting longer than one second, will cause the three letters to be shown in a
circulating way. Only when stop pressing the key for longer than one second or
pressing another key, will the system send the real key code to the application
program.
FN
The function key
.
This key cannot be activated alone, it must be pressed with one numeral key at
the same time. For example,
FN
+
1
generates function #
1
,
FN
+
2
generates
function #
2
, etc (up to 9 functions). Also, this key can be combined with the
UP/DOWN
arrow keys to adjust the contrast of the LCD. And when this key is
combined with the
ENTER
key, it will turn ON/OFF the backlight.
POWER
Power On/Off
.
To prevent a faulty push, it needs about 1.5 sec continuous pressing to turn
On/Off the power.
4.2
Application mode
This is the default operation mode when turning on the power. The operation depends on the
application module. Please refer to section 3.4.
