Zebra QLn420 User's Guide download pdf (Page 37)

QLn Series User Guide

Programmable LCD Settings

In addition to the status icons, the LCD control panel can dis-

play other printer settings and functions as text. Applications

can be written to allow the user to view and /or modify these

settings using the scroll and select keys on the display. The

menu that comes with the printer provides access to the most

commonly used parameters. Refer to the CPCL Programming

Manual for a complete list of the parameters, and for details

on how to change the front panel display (p/n P1036975-001 at

www.zebra.com/manuals).

The LCD backlighting option allows viewing of the screen

in a dark environment, or provides better contrast in a very

bright environment. The QLn320 and QLn220 can be pro-

grammed to enter a low power mode (Backlight Off) during

periods of front panel inactivity. While in low power mode, the

screen is populated with menus and status icons, data which

may or may not be readable depending on ambient light con-

ditions. The QLn Series printers provide a configurable time

delay from the time the backlight is turned on to when it turns

off. The time range for this delay is 5 to 1200 seconds with

a default time of 10 seconds. The backlight can be activat-

ed within one second after any of the cursor, select, or soft

keys is pressed. (The feed button does not activate the back-

light.) The status bar icons, the user space content, and the

navigation bar will remain on the screen with the backlight

off. Extensive use of the display backlight will decrease the

time the printer can run between charges. Refer to the section

“Extending Battery Life” for more information.

Soft Keys

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Zebra QLn420 User's Guide Page 37