Black Box KV1424A-R2 Remote user video compensation, To display a suitable high contrast image

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Remote user video compensation

Video compensation for each remote user is provided by their ServSwitch CX Remote modules, not by the ServSwitch CX unit itself. Using the ServSwitch CX Remote controls you can adjust the picture sharpness and brightness to improve the remote picture quality.

Note: Accurate remote user compensation relies upon visual feedback from the screen image. It is therefore vital to ensure that the video images being sent out from the ServSwitch CX are as ‘true’ as possible. Ensure, using the local user port, that the video images received from the servers are correctly compensated BEFORE attempting to adjust the remote user(s).

Video compensation is best carried out 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 not 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 (provided only by ServSwitch CX Remote AS/R modules) - see the Remote user 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 apply remote user video compensation

1Ensure that the video image from the server to be used has been correctly compensated. See Server video compensation for details.

2On the remote user keyboard (connected to an ServSwitch CX Remote

extender), simultaneously, 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.

3While viewing the displayed screen image, use the following keys to adjust the controls:

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 Home key to restore.

®

  

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

Brightness: for adjustment. There are 255 brightness levels.

Restore default

Sharpness

increase

sharpness and

(coarse)

brightness

Sharpness

 

settings

 

decrease

 

 

 

 

(coarse)

 

Exit image

Sharpness

 

increase

 

controls

(fine)

Brightness

and save

 

increase

settings

 

 

 

Note: The Word processor method is accurate and quick. However, for the very finest video compensation, use the latest “skew” test pattern program which shows both the skew pattern and a section of mixed size Hs (black on white and white on black).

If the image controls cannot provide a crisp image

If, after adjusting the image controls, one or more screen images remain fuzzy or have coloured shadows you may need to use the Skew adjustment feature. Please see Remote user skew adjustment for details (ServSwitch CX Remote AS/R module only).

 

Sharpness

Brightness

decrease

decrease

(fine)

4When no shadows are visible and the displayed images have crisp edges,

press to exit configuration mode and permanently save all settings.

The new compensation settings will be stored, even when power is removed or if a complete reset is initiated. These settings should not require further changes unless the cabling arrangements are altered.



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Contents ServSwitch CX Contents Further information Index Introduction ServSwitch CX features front and rear Front panel buttonsServSwitch CX ServSwitch CX with IP What’s in the box What you may additionally needMounting Rack bracketsConnections Connections Local user To connect the local user portRemote user via CX Remote extender Cable lengths for remote user locationsTo connect a remote user Global user IP network port To connect the Global user IP network portServer system via SAM To connect a server systemModem/ISDN port To connect a modem or Isdn adapterPower in connection To connect the power supplyPower control port To connect and address the switch boxesCascading multiple units See alsoHow cascade connections operate Addressing servers in a cascade 43 41Tips for successful cascading Connecting ServSwitch CX units in cascadeNumbering diagram To connect units in cascadeUsing cascaded servers Testing specific links to cascaded serversTo test a specific link Slave ServSwitch CX Multiple video head connectionsOverall initial configuration To access the configuration menu global users Configuration menusTo access the configuration menu local and remote users HotkeysTo enable general security General security and configuration stepsConfiguration menus layout To set an Admin passwordRegistering users edit user list Admin userAccess to all servers Press Access to no servers Press To create/edit user accountsTips when creating/editing server entries Registering servers edit computer listTo create/edit server entries See Remote user skew adjustment for details Video compensationServer video compensation To apply server video compensationVertical edges of images To apply remote user video compensation Remote user video compensationTo display a suitable high contrast image If the image controls cannot provide a crisp imageUsing the supplied skew pattern Remote user skew adjustmentTo use skew adjustment Creating a skew test patternNum Lock for Red, Caps Lock for Green To select an autoscan period To select an autoscan modeAutoscanning To define an autoscan listSaving and restoring configuration settings Preparations for configuration save/loadTo reset the ServSwitch CX with IP models What to do if the Admin password has been forgottenTo reset ServSwitch CX models Configuration screensHot plugging and mouse restoration Which restore setting do I use?To restore mouse operation when hot plugging Recognising an IntelliMouse-style mouseInitial IP configuration To use the initial IP-configuration sequenceTo configure IP-specific settings IP configuration by global user To configure IP details from a global user locationUser Accounts Encryption settings ServSwitch CX with IP encryption settingsViewer encryption settings Networking issues Positioning ServSwitch CX with IP in the networkPlacing ServSwitch CX with IP behind a router or firewall Port settingsAddressing To discover a DHCP-allocated IP address DNS addressingEnsuring sufficient security Placing ServSwitch CX with IP alongside the firewallBy configuration page via viewer PortsTo configure the power sequences for each host server Power switching configurationPower control sequences To control two or more ports simultaneouslyKvmadmin -getconfig kvm1.cfg Kvmadmin utilityKvmadmin command ip address parameters Kvmadmin -setusers users.csvItems required to use the upgrade utility Performing upgradesUpgrading ServSwitch CX models and SAMs To use the KVM Firmware Uploader utilityWhere Vxxx is the upgrade file version number Select the items to be upgradedSelect the upgrade file to be used Commence the upgradeUpgrading ServSwitch CX with IP models To upgrade ServSwitch CX with IP modelsPerform upgrade button Computer button and numeric indicator ServSwitch CX modelsServSwitch CX with IP models User button and numeric indicatorTo select a server using the front panel controls Local and remote user accessTo gain access as a local or remote user Selecting a serverTo select a server using hotkeys Standard hotkeysKeep Pressed down until all other Numbers have been entered To select a server using the on-screen menu To select a server using mouse buttonsTo select a server using mouse buttons Advanced method Logging in and out Selecting cascaded serversConfirmation box Reminder banner To change banner colours or disable the bannerTo use the Routing status feature Routing statusPower switching via configuration menu To switch a server on or offUser preferences and functions Global user access Global user access via VNC viewer To access via the VNC viewerTo download the VNC viewer Global user access via web browser To access via your web browserUsing the viewer window When using the viewer windowMenu bar Configure Mouse pointersTo select a host Auto calibrate Access mode shared/privatePower switching via viewer Re-synchronise mouseMouse Control Single Mouse ModeControls Resync MouseVideo Settings KVM switch menuWhen entering codes Keyboard Control InfoSetting the Threshold manually Using automatic configurationsIncreased by 50% when a slow link is detected Host system informationTo initiate a dial up link Access via dial up modem or Isdn linkIf you need to enter a port number To enter a port number in a Web browserWindows Viewer encryption settingsSupported web browsers LinuxGetting assistance TroubleshootingWhen logging on using VNC viewer, I cannot enter a username Techhelp@blackbox.co.ukAppendix 1 Configuration menus To access the configuration menusConfigure IP port Functions Reminder Banner User PreferencesOSD Colour Reminder ColourGlobal Preferences Mouse SwitchingAutoscan Mode Screen SaverRS232 Mouse Type User TimeoutOSD Dwell Time Mouse TypeLanguage Setup OptionsKeypads Controls Exclusive UseAutomatic Logout Advanced Options DDC OptionsConfigure IP port Unit ConfigurationNetwork Configuration Modem Configuration Reset ConfigurationClearing IP access control What is IP access control?To clear IP access control Appendix 2 Configuration pages via viewer To access the remote configuration pagesUser accounts Hardware Version Unit configurationAdmin Password Firmware VersionAdvanced unit configuration Time & date configuration MAC address Network configurationIP Access Control IP Network MaskTo reorder access control entries Setting IP access controlTo define a new IP access control entry To edit/remove access control entriesSerial port configuration Power control portModem port Add entry for unrecognised host Host configurationErase Host Configuration To create a new host entryPort/host addressing using Port Direct Port DirectExamples Syslog Server IP Address Logging and statusTo copy and paste the log For further details To get hereAuto select Appendix 3 VNC viewer connection optionsColour/Encoding Preferred encodingInputs Enable all inputsDisable all inputs view-only mode CustomiseScaling MiscIdentities Defaults ReloadDefaults Save Load / SaveAppendix 4 VNC viewer window options Appendix 5 Browser viewer options Encoding and colour levelSecurity Net masks Appendix 6 Addresses, masks and portsIP addresses Want to know more?154 Net masks the binary explanationAll locations Calculating the mask for IP access controlSingle locations Address rangesSecurity issues with ports PortsAppendix 7 Cable and connector specifications Power switch to power switch daisy chain cableRS232 serial flash upgrade cable Multi-head synchronisation cable Appendix 8 Hotkey sequence codes Permissible key pressesCreating macro sequences Appendix 9 Supported video modes Safety information General Public License LinuxEnd user licence agreement FCC Compliance Statement United States Radio Frequency EnergyEuropean EMC directive 89/336/EEC Canadian Department of Communications RFI statementFCC requirements for telephone-line equipment Certification notice for equipment used in CanadaNormas Oficiales Mexicanas NOM electrical safety statement Instrucciones de seguridad109 Index 111 112 BlackBox subsidiary contact details Country Web Site/Email Phone Fax