Vdwall LVP603S User Manual download pdf (Page 21)

LVP603S User’s Manual

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LED VIDEO PROCESSOR

10. Factory district setup

The following setups must be made by relevant qualified technicians or

follow the guidance of the plant technician. otherwise the incorrect and

improper operation will result to abnormal situation.

Item 28: “Device_Init”

After enter the No.27 Item from the No.26 Item, press “V1” for 5 times，

and then press “↑”move to the No.28 Item: “Device_Init”, click

“←” or “→” to select “Yes”, then click “Enter” to restore to the factory default

setup, and mention “please power off & on again”, and then just follow the

instruction.

Item 29: “Bias”

In order to decrease the noise on gray scale display, the LED display

system usually removes the lower gray scale one of all input signals, which will

cause the lose of the video information, especially in dark scene ,such as night

view.

LVP603S can improve problems as follow mentioned by adjusting the

“ Bias”, whose limit ranging from 0 to 32. When losing the signal of dark scene,

you can restore the drop-out information to the LED display by increasing the

value.

Normally in order to keep the completeness of output signals, the

standard value is set as 0!

Item 30: “Auto ADC”

After inputting the analog signal to the video processor who’s ADC has

not been revised, the picture on the display may appear some bad phenomena,

such as color cast, extreme-darkness. LVP603S can overcome all of problems

by automatically revising white balance in terms of the input analog signals (AV,

and VGA). Figure below shows the method of “Auto ADC”.

When switched to the corresponding analog input signal, the processor

will receive and output the signal to the LED display, then, get into the No.18

Item, press “ ←”or “ →” to select “ Yes”, at last, press “ Enter” to carry on auto

ADC.

Caution: All video processors have gone though the auto ADC, please

use this item delicately!

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Vdwall LVP603S User Manual Page 21