IBM 243X Using the Screen, To turn the backlight on and off, To change the display contrast, 1-17

Learning About the Terminal 1

Using the Screen

You can use the terminal’s screen to view data, run applications, monitor the terminal’s status, and perform many other functions. The CGA-compatible screen is a backlit LCD that is configurable up to 21 lines by 31 characters. The screen also supports double- byte characters, user-programmable fonts, and bitmap graphics.

The 243X screen has versatile display features that allow you to resize the screen based on operator preference and work environment. For help, see “Display Spacing” in Chapter 6 of the 2400 Family system manual. Depending on the application, you can

Walso use the viewport feature to move around a full 25-line by 80-character screen. The Shift key is built into the terminal’s keypad. You can use the Shift key to

•turn the backlight on and off.

•adjust the display contrast.

When you use this key to change the backlight or contrast, these changes are not saved permanently in flash memory.

To turn the backlight on and off

•Press LW.

Turn the backlight on to see the terminal’s screen more easily in dimly lit environments. The backlight stays on for the length of time set in the Display Backlight Timeout command as long as there is no keypad or scanning activity or until you press LW again. For more information, see “Display Backlight Timeout” in Chapter 6 of the 2400 Family system manual.

Note: You use the battery power at a faster rate with the backlight turned on.

To change the display contrast

•Press RW.

Each time you press RW, it makes the display contrast one level darker. There are eight contrast levels. If the contrast is at the darkest level and you press RW, the contrast changes to the lightest contrast level. For help, see “Display Contrast” in Chapter 6 of the 2400 Family system manual.

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