Planar m40L User Manual

Backlight Control

m40L/m46L Installation & Configuration Guide

73

This mode is useful when the m40L/m46L is in a room with no outside windows and 
unchanging ambient light levels. 

Set

 

the

 

BACKLIGHT

 

CONTROL

 

MODE

 

to

 

MANUAL

.

Adjust the 

BACKLIGHT

 

INTENSITY

 to a comfortable brightness. A lower brightness 

will increase lamp life. 

Changing a failed backlight is a job for a qualified service technician. It is done at 

the factory, not in the field. Contact your Planar dealer for more information.

If 

AUTO

 

BACKLIGHT

 

ON

 is checked, the display turns on the backlights soon after AC 

power is applied. It won’t wait for a remote control or RS232 command. 

This is the normal mode for applications where the displays will be on 24 hours a day. 
This way, no one has to manually turn on the backlights after a power failure.

To prevent temporary image retention (TIR), is recommended that you do not 

leave the m40L/m46L on for 24 hours a day. To get the most out of your display, see 
"Recommended Usage" on page 6.

If the displays normally have the backlights off for part of the day or night, do not 
check this box. Otherwise a power failure at night would turn on the lamps.

When checked, 

TURN

 

BACKLIGHT

 

OFF

 

WITH

 

NO

 

SOURCE

 (

DPMS

) causes the backlights 

to turn off if the source is absent for the length of time specified in the 

DPMS

 

DELAY

 

line. If this line is not checked, the backlights remain on indefinitely. To specify an 
amount of time after which the source is absent that the backlights will shut off, 
enter that number in the 

DPMS

 

DELAY

 line.