Barco GRAPHICS 500 R9002930 User Manual
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7.Image Menu

The white balance happens only on Green Adjust until bright spots appear in the image

Image 7-34

The black balance happens on the three colors

The PR and PB connector have to be removed from the input Adjust until noise appears in the image

Image 7-35

The input balance settings are stored in the image file, each source has its own input balance.

7.9AGC on Video

AGC

Automatic Gain Control: allows an automatic amplitude (gain) control of the incoming video signal

AGC is only for Video signals

Enabling/disabling the AGC

1.Press MENU to activate the Tool bar

2.Press → to select the Image item

3.Press ↓ to Pull down the Image menu

4.Use ↑ or ↓ to select AGC on Video

5.Press → to pull down the menu

6.Use ↓ or ↑ to enable or disable the AGC

7.Press ENTER

A white bullet shows the active setting (image 7-36)

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R5976367 BARCOIQ GRAPHICS 500 01/02/2007

 

7. Image Menu

Image 7-36

The AGC can be disturbing in case of Macrovision encoded signals, therefore the AGC can be disabled (OFF) at any time

7.10 Manual Gain Control

What can be done ?

Beside the AGC there is the possibility to manually set the gain of the incoming video signal. When the AGC is enabled (ON), the manual setting does not affect the gain, AGC must therefore be disabled. The manual gain control must be done on an external pattern with white areas (grey scale bar pattern)

How to set the Manual Gain Control ?

1.Press MENU to activate the Tool bar

2.Press → to select the Image item

3.Press ↓ to Pull down the Image menu

4.Use ↑ or ↓ to select Manual Gain Control (image 7-37)

5.Press ENTER

A scroll bar is displayed (image 7-38)

6.Use ← or →, the numeric keys on the remote, or the keypad to change the gain so as to obtain homogene white parts in the image.

Image 7-37

R5976367 BARCOIQ GRAPHICS 500 01/02/2007

 

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7. Image Menu

Image 7-38

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R5976367 BARCOIQ GRAPHICS 500 01/02/2007