IBM
POS
Device
Diagnostics
tool
The
IBM
POS
Device
Diagnostics
is
a
diagnostics
tool
that
allows
you
to
test
the
4820
when
it
is
attached
to
the
SurePOS
700
Series
system
unit.
This
tool
installs
as
part
of
the
POSS
for
Microsoft
®
Windows
®
software.
This
section
describes
how
to
calibrate
the
touch
screen
with
3M
TouchWare.
Understanding
the
touch
and
when
to
calibrate
Note:
During
calibration,
the
lift-off
position
of
your
touch,
and
not
the
touchdown
position,
determines
the
calibration
point.
If
you
do
not
position
your
touch
correctly
on
the
screen,
you
can
slide
your
finger
to
the
center
of
the
target.
Hold
your
finger
as
still
as
possible
after
you
reach
the
calibration
position.
Do
not
use
any
swiping
motion
during
lift-off.
The
calibration
process:
v
Defines
the
dimensions
and
center
of
the
touch
screen’s
active
area
v
Aligns
the
active
area
to
the
underlying
image
Calibrate
your
touch
screen
when:
v
You
initially
install
the
3M
TouchWare
software
v
The
cursor
does
not
accurately
follow
your
finger
movement
v
You
change
the
video
resolution
or
video
mode
v
You
adjust
the
touch
screen
controller
frequency
using
the
Stabilize
Cursor
function
v
You
enable
or
disable
the
Filtering
option
Steps
to
calibrate
Follow
these
steps
to
calibrate
the
4820
SurePoint
Solution:
1.
Allow
the
4820
SurePoint
Solution
to
warm
up
at
least
one-half
hour
before
you
begin
calibration.
2.
Open
the
touch
screen
Properties
dialog
box.
Select
the
Calibrate
tab.
3.
Click
Calibrate
.
A
calibration
target
appears
in
the
lower
left
corner
of
the
screen.
4.
Touch
the
touch
screen
and
position
your
fingertip
to
completely
cover
the
target.
Hold
your
touch
for
at
least
three
seconds.
5.
Lift
your
finger
off
of
the
screen
when
you
accurately
touch
the
target.
6.
Touch
the
touch
screen
and
position
your
fingertip
to
completely
cover
the
next
target.
Hold
your
touch
for
at
least
three
seconds.
7.
Lift
your
finger
off
of
the
screen.
The
program
saves
the
new
calibration
values
and
displays
a
dialog
box.
8.
Test
the
calibration.
Configuring
and
calibrating
the
touch
screen
Update
November
2005
Chapter
2.
Installing
the
IBM
4820
61
Summary of Contents for 4820
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