NEC LCD1990SX user manual Using the Auto Brightness function, English-25

Using the Auto Brightness function

The brightness of the LCD screen can be set to increase or decrease depending on the amount of ambient light within the room. If the room is bright, the monitor becomes correspondingly bright. If the room is dim, then the monitor will dim accordingly. The purpose of this function is to make the viewing experience more comfortable to the eye in a variety of lighting conditions.

The Auto Brightness function is set to OFF by default.

SETUP

Use the following procedure to select the Brightness Range that the monitor will use when the Auto Brightness function is activated.

1.Set the BRIGHT level. This is the brightness level that the monitor will go up to when the ambient light level is highest. Make sure the room is at its brightest when setting this level.

Select Ò1Ó in the AUTO BRIGHTNESS menu (Figure 1). Then use the front buttons to move the cursor up to the BRIGHTNESS setting. Choose the desired brightness level (Figure 2).

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Figure 1 Figure 2

2.Set the DARK level. This is the level of brightness that the monitor will go down to when the ambient light level is low. Make sure the room is at its darkest when setting this level.

Then use the front buttons to move the cursor up to the BRIGHTNESS setting. Choose the desired brightness level (Figure 3).

Figure 3

When the ÒAuto BrightnessÓ function is enabled the Brightness level of the screen changes automatically according to the lighting conditions of the room (Figure 4).

BRIGHTNESS level set for the monitor to use when ambient lighting level is low.

BRIGHTNESS range

BRIGHTNESS level set for the monitor to use when ambient lighting level is high.

			Bright condition area
dark	room bright condition	bright	Dark condition area

Screen Brightness value by Auto Brightness function

Figure 4

Lb: Border between bright and dim lighting conditions; set at factory

L1: BRIGHTNESS level set for the monitor to use when ambient lighting level is high (L1>Lb)

L2 : BRIGHTNESS level set for the monitor to use when ambient lighting level is low (L2<Lb)

L1 and L2 are the brightness levels set by the user to compensate for changes in ambient lighting.

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