B-K Medical Pro Focus 2202, Руководство пользователя

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54 Chapter 3
Figure 3-3. The trackball and trackball keys.
Trackball with Select Keys
Like a mouse The trackball and
[
A
]
(
Select
) keys are used together like a PC mouse.
•
Rolling the trackball moves the cursor and other objects on the screen.
•
Pressing one of the
[
A
]
keys is like clicking a left mouse button.
There is no difference between the 2
[
A
]
keys – use the one that is most convenient
for you.
Adjusting the Trackball
The trackball should move smoothly. If it is too tight or too
loose, use the trackball adjustment tool (QA0228) to adjust it.
Figure 3-4. Using the trackball adjustment tool.
The tool is stored in the keyboard base below the keyboard panel. To adjust the
trackball movement, place both ends of the tool into the small holes in the black ring
of the trackball housing. Turn clockwise to tighten and counterclockwise to loosen
the trackball. The ball can be removed completely for cleaning.
Select keys
trackball
+/- key
trackball adjustment tool