The Display Image - IBM 3270 Operator's Manual

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