The Display Image
To make your display station ready for operation, perform the following:
Note:
If
the display station screen
is
dirty, refer to "Qeaning Procedures"
at
the
end
of
this chapter.
1.
Use
the On/Off ( I / 0 ) switch
to
turn the display station on.
2.
If
the display station has the Security Keylock feature, insert the security
key into the lock and turn the key clockwise. (Refer to
Chapter 4 for a
description
of
the Security Keylock feature.)
3. Adjust the brightness and contrast controls.
4.
If
t}1e
display station has the Audible Alarm feature, adjust the audible
alarm volume control by using the procedure in the
Chapter 4 Audible Alarm
feature description.
If
your display station has a keyboard, skip over the next paragraph and continue
reading this section.
If
your 3278 does not have a keyboard, selector light pen, magnetic slot
reader, or magnetic hand scanner attached, operation
is
controlled by the
program, and you may monitor information displayed on the screen.
If
your 3278 does not have a keyboard, selector light pen, magnetic slot
reader, or magnetic hand scanner, you should now read about the lights and
the Operator Information Area
on
your 3278, starting with "3278 Operator
Panel lights." If your 3278 does
not
have a keyboard, but does have a
selector light pen, a magnetic slot reader, or a magnetic hand scanner, read
about the lights and the Operator Information Area, starting with
"3278
Operator Panel lights," and then refer
to
Chapter 4 for a description
of
selector light pen or magnetic slot read operation.
Before
we
talk about the keyboard, there are some things you shoulq know
about your display screen.
As
we
have said before, the 3278 Display Station can be used by many different
organizations, all with very different kinds
of
jobs to be done. Even within one
organization, there are
m'any
different applications for 3278 displays. Today's
host systems are capable
of
process~g
many different jobs
at
the same time.
Therefore,
it
is
possible
that
you could be working on one jqb
~hile
the
operator next to you
is
doing completely different and unrelated work.
Tn.e
images on your two screens
woulH
probably be completely different .
• " ; f
Figure
2-3
is
a typical display image; you will be referred
to
t4is image
in
some
of
the discussions that follow. Keep in mind that this example
is
only one
of
many possible display images. Your organization may not even require this type
of
image. The references made to it, however, apply
to
all images.
Chapter
2.
Controls and Indicators
2-11
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