WalkAbout Hammerhead 3 User Manual - Chapter
Chapter 2 – Hardware Operation
WalkAbout Computers HAMMERHEAD 3 User’s Guide – v021101
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2
Hardware Operation
Turning on the unit
All units are shipped ready for operation with a lithium ion battery
freshly installed at the factory. Turn the computer on by pressing the
on/off button on the upper right-hand side. The button is recessed to
prevent accidentally turning the unit on or off. The HAMMERHEAD 3
will perform its self-check routines during the start up process. All units
are configured at the factory to automatically boot to the Microsoft
Windows Desktop unless a custom configuration has been requested.
Use and Care
The HAMMERHEAD 3 is a hardened field computer, but it is an
electronic device and reasonable precautions should be taken:
•
Avoid severe impacts, especially on the display glass.
•
Don’t throw the computer anywhere, even on the seat of a car.
•
Don’t subject the computer to extreme heat by placing it on the
dashboard of a vehicle with the display facing the sun.
•
Don’t leave the computer in temperatures below -25
°
F.
•
Don’t pile tools or heavy objects on top of the computer.
•
Don’t place the unit on the hood or roof of any vehicle, as it
might be left behind.
Chapter
Chapter 2 – Hardware Operation
WalkAbout Computers HAMMERHEAD 3 User’s Guide – v021101
22
•
Don’t try to take the computer apart. Special tools are required
to disassemble the computer.
•
Don’t use excessive force when inserting PCMCIA cards in the
PCMCIA slots, as they may break.
•
Don’t use BIOS files interchangeably between color and
monochrome units. This will result in system damage and the
unit will have to be returned to technical support.
Pen Operations
The pen is the primary screen navigation and data entry tool for the
HAMMERHEAD 3.
Without a keyboard attached, the pen is the
only means of communicating with the computer. Do not lose or
misplace the pen
. The pen is usually tethered to its carrying case.
Attaching the tether to one of the zippers on the carrying case with a
split ring allows the tether to be anchored on either side of the
computer. By shifting the position of the zipper, the tethered pen is
convenient for right or left-handed users. All users are encouraged to
purchase a spare pen as a backup.
The pen functions like a two-button mouse. There are two switches in
the pen, one in the pen tip and another on the barrel of the pen. The
tip switch performs the same functions as the left button on a mouse
and the barrel switch performs like the right mouse button. Very few
applications require the use of the pen’s barrel button.
Do not depress
the barrel switch when writing on the display; it will adversely affect
handwriting recognition
. To activate the tip switch, simply press the tip
of the pen against the display. This is similar to clicking the left button
of a mouse. Double clicking is accomplished by double tapping with
the pen. Move an icon by pressing the pen directly overhead and
dragging it to the desired destination, keeping the pen in constant
contact with the display. Attributes related to use of the pen (e.g. tap
speed) can be adjusted in MS Windows’ Control Panel in the
Handwriting directory.
The HAMMERHEAD 3 utilizes a proximity-sensing electromagnetic
digitizer. This component tells the computer the pen’s exact position.
The computer senses the pen as it nears the display and the cursor
appears when the pen is approximately an inch away. This allows