Black Box ACU5116A, ACU5114A Image controls sharpness and brightness, To use the image controls

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Image controls - sharpness and brightness

The Wizard extender modules incorporate special controls to compensate for losses incurred within long cable links. Using these controls you can adjust the picture sharpness and brightness to improve your remote picture quality.

The need for image control adjustment is best discovered when viewing high contrast images with vertical edges, such as black lines on a white background. When doing so, if you notice that the screen image is ‘fuzzy’ or ‘dark’ then the image controls may be able to solve this condition.

Note: If the high contrast images exhibit shadows with separate colours, then there may be a skew problem which requires a different image adjustment - see the ‘Skew adjustment’ section for details.

To display a suitable high contrast image

The best way to clearly view the effect of sharpness and brightness adjustments is to display a high contrast image, with vertical edges, on the screen.

To use the image controls

1Simultaneously, press the hotkeys (by default, and ) along with to enter configuration mode.

The three keyboard indicators (‘Num Lock’, ‘Caps Lock’ and ‘Scroll Lock’) will now begin to flash in sequence. The speed of the sequence indicates the level of the sharpness adjustment currently applied: the slower the rate, the lower the level of sharpness being applied.

2While viewing the displayed high contrast screen image, use the following keys to adjust the controls:

 

Sharpness

Restore default

increase

(coarse)

sharpness and

 

brightness

 

®



Open a word processor, type the capital letter ‘H’, or ‘M’ and increase the point size to 72 or higher. For best results, the background should be white and the character should be black.

A BLACK shadow on the right of the character indicates UNDER compensation.

A WHITE shadow on the right of the character indicates OVER compensation.

High contrast

Black or bright

black character

white shadow

on white

on the right

background

indicates

 

the need for

 

sharpness

 

adjustment

 

settings

Sharpness

 

 

decrease

 

 

 

 

 

 

(coarse)

 

Exit image

 

Sharpness

 

 

increase

 

controls

 

(fine)

Brightness

and save

 

 

increase

settings

 

 

 

 

Sharpness

Brightness

decrease

decrease

(fine)

Sharpness: for fine adjustment, for coarse adjustment.

There are 255 sharpness levels (one coarse step jumps 10 levels).

To autoset sharpness: Press to make the module calculate and apply an automatic compensation level - you can use this as a starting point for your fine tuning.

Note: If the monitor goes blank and switches off (due to oversetting the sharpness adjustment) press the key to restore.

Brightness: for adjustment. There are 255 brightness levels.

3 When no shadows are visible and the displayed images have crisp edges,

       

If the image controls cannot provide a crisp image

If, after adjusting the image controls, the screen image remains fuzzy or has coloured shadows you may need to use the Skew adjustment feature. Please see the next section for details.

press

to exit configuration mode and permanently save all settings.

The new compensation setting will be stored, even when power is removed

or if a complete reset is initiated. The setting should not require further

changes unless the cabling arrangement is altered.

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Contents ServSwitch Wizard Extenders Contents Introduction WizardExtender Supplied items ACU5114A variant Serial cable for RS232 connectionSupplied items ACU5116A variant Local ACU5116A moduleLocal module switches InstallationStage a Configuration switch settings Local SwitchRemote module switches Remote SwitchRemote Switches 2 Desk mount Installation AdviceStage B Mounting a module desk or rack Rack mountStage C Connections Connections at the Local moduleOptional power connection Local keyboard, video and mouse connectionsLocal speaker connection Connections at the Remote module Twisted pair, power and serial connectionsPower supply connection Keyboard, video and mouse connectionsAudio connections ACU5116A only To the socket labelledOperation Power and activity indicatorsUser arbitration and keyboard indicators General useLocking and unlocking the system To enable the videoTo disable the video To lock the systemTo enter and use configuration mode ConfigurationEntering, using and exiting configuration mode To exit from configuration modeTo set a password Password settingPassword override To override the Remote passwordMicrosoft and Logitech -specific mouse settings Which restore setting do I use?Hot plugging and mouse restoration To use the image controls Image controls sharpness and brightnessTo display a suitable high contrast image If the image controls cannot provide a crisp imageSkew adjustment To use skew adjustmentMiscellaneous settings Reset all configuration options to default statesReport firmware version Stage B Create a startup diskette Flash upgradeStage a Download the upgrade files Copy the downloaded files to the diskStage D Reconfigure the Remote connections and begin Stage E Return all connections to their usual statesNo video image is received at the Remote module TroubleshootingGetting assistance On-screen mouse pointer does not respond to mouse movementsSafety information Other products in the Wizard rangeRadio Frequency Energy European EMC directive 89/336/EECFCC Compliance Statement United States Certification notice for equipment used in Canada Normas Oficiales Mexicanas NOM electrical safety statement Instrucciones de seguridadBlackBox subsidiary contact details Country Web Site/Email Phone FaxPage Copyright 2006. Black Box Corporation. All rights reserved