Daxten DSR4020, DSR2020, DSR8020, DSR1020 manual Contrast and brightness, Detection thresholds

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				Chapter 5: The Video Viewer	57

	Table 5.2: Manual VIdeo Adjust Dialog Box Descriptions

	Letter	Description	Letter	Description

	A	Image Capture Width	H	Pixel Noise Threshold

	B	Pixel Sampling/Fine Adjust	I	Automatic Video Adjustment

	C	Image Capture Horizontal Position	J	Refresh Image

	D	Image Capture Vertical Position	K	Adjustment bar

	E	Contrast	L	Video Test Pattern

	F	Brightness	M	Performance Monitor

	G	Block Noise Threshold	N	Close button

Image capture width, pixel sampling/fine adjust, image capture horizontal position and image capture vertical position

The Image Capture Width, Pixel Sampling/Fine Adjust, Image Capture Horizontal Position and Image Capture Vertical Position adjustments affect how the target video is captured and digitized and are seldom changed.

The image capture parameters are automatically changed by the Automatic Adjustment function. A special image is required on the target in order to make accurate adjustments independently.

Contrast and brightness

If the image in the Video Viewer window is too dark or too light, select Tools - Automatic Video Adjust or click the Automatic Video Adjust button. This command is also available in the Video Adjustments dialog box. In most cases, this will correct video problems. In those cases where clicking on Auto Adjust several times does not set the contrast and brightness as desired, adjusting the contrast and brightness manually may help.

First, increase the brightness. Do not go more than 10 increments before moving the contrast. Generally, the contrast should be moved very little.

Detection thresholds

In some cases, noise in the video transmission keeps the packets/sec count up. This may be seen when little dots change in the area of the cursor when it is moved. Varying the threshold values may result in “quieter” screens and improved cursor tracking.

Noise Threshold and Priority Threshold values may be modified if you are using standard video compression. Block Noise Threshold and Pixel Noise Threshold values may also be modified. Default threshold values can be restored by clicking Auto Adjust Video.

Block noise threshold and pixel noise threshold

The Block Noise Threshold and Pixel Noise Threshold values set the minimum color levels in terms of changed video blocks and pixels per thousand that are allowed.

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Contents For models DSR1020, DSR2020, DSR4020, DSR8020 DSR SwitchUSA Notification Japanese Approvals Safety and EMC Standards Table of Contents Console Menu Other Console Main Menu Options List of Figures Vi DSR Switch Installer/User Guide List of Tables Viii DSR Switch Installer/User Guide Reduce cable bulk Features and BenefitsEasy access to any target device Access the DSR switch via network connectionTwo modes of access Server SoftwareNetwork DSR1020 DSR2020 DSR4020 DSR8020Rack mount safety considerations Safety PrecautionsInstallation Overview InstallationEthernet Basic DSR Switch ConfigurationSupplied with the DSR switch Setting up your networkGetting Started Additional items neededTo connect and power up your DSR switch Connecting the DSR Switch HardwareTo connect a Dsriq module to a serial device To connect a Dsriq module to a serverVerifying the Connections To adjust mouse settings on Windows NT using default drivers To adjust mouse settings using Sun Solaris drivers To adjust mouse settings using IntelliPoint driversTo adjust mouse settings using Red Hat Linux drivers Viewing and Selecting Ports and Servers To access the Oscar interface Main dialog boxControlling Your System at the Local Port Oscar Interface Status Symbols Symbol Description Viewing the status of your DSR switching systemSelecting target devices To select target devicesTo configure the Oscar interface screen delay Soft switchingTo soft switch to a target device Navigating the Oscar InterfaceEnter Alt+OSingle-click, Enter BackspaceTo access the Oscar interface Setup dialog box Configuring Oscar Interface MenusAssigning target device names To access the Oscar interface Names dialog boxNames Dialog Box To list target devices alphabetically by name To assign names to target devicesTo assign a device type To access the Oscar interface Devices dialog boxAssigning device types Changing the display behavior To access the Oscar interface Menu dialog boxTo choose the display order of target devices To set a Screen Delay Time for the Oscar interfaceOscar Interface Status Flags FlagDescription To access the Oscar interface Flag dialog boxControlling the status flag To determine how the status flag is displayed Broadcasting to target devicesTo broadcast to selected target devices To access the Oscar interface Broadcast dialog boxTo add target devices to the Scan list Using Scan modeTo turn Broadcasting off To remove a target device from the Scan list To start the Scan mode12 Commands Dialog Box To cancel Scan modeTo set the Screen Saver options Setting local port Screen Saver optionsTo access the Oscar interface Screen Saver dialog box To immediately turn on the screen saver Setting the keyboard country codeTo exit Screen Saver mode and log in to the local port 14 Keyboard Dialog Box To set the keyboard country code for Sun serversTo access the Oscar interface Commands dialog box Managing Server Tasks Using the Oscar InterfaceTo disconnect a user Viewing and disconnecting user connectionsTo view current user connections To reset the PS/2 mouse and keyboard values Resetting your PS/2 keyboard and mouseTo display version information Displaying version informationClick X to close the Dsriq Version dialog box DSR Switch Installer/User Guide To log in to the DSR web server Remote OperationsDSR Explorer Window Area Descriptions Letter Description About the DSR Explorer WindowBookmarking a window Internet Explorer only Using the side navigation barUsing the top option bar Refreshing a window Printing a windowLogging Out To bookmark a windowUpgrading Dsriq modules Launching a KVM sessionDSR web server device management User access levels Rebooting the applianceManaging Local Accounts Preemption levelsManaging Device Properties Viewing and changing appliance configuration informationAppliance Appliance Settings Versions Power Controlling Target Devices DSR Switch Installer/User Guide About the Video Viewer Window Video ViewerSession time-out To enable/disable or configure the session time-outVideo Viewer minimum requirements CDE F G a Window FeaturesVideo Viewer Window Descriptions Letter Changing the toolbarTo specify a toolbar hide time Adjusting the View Setting the Window SizeTo change the Video Viewer window resolution To align the mouse cursorsTo enable or disable full screen mode Adjusting color depthTo enable automatic, full or manual scaling To refresh the screenTo manually adjust the video quality of the window Additional Video AdjustmentC D E F G H Block noise threshold and pixel noise threshold Contrast and brightnessDetection thresholds Automatic video adjustment Adjusting Mouse OptionsCursor Type Refresh imageTo enter single cursor mode Single cursor modeTo select a key for exiting single cursor mode Remote Cursor Local CursorTo change the mouse cursor setting To exit single cursor modeScaling AlignmentUsing Macros Using Keyboard Pass-throughTo realign the mouse To specify keyboard pass-throughClosing a Video Viewer Window Session Saving the ViewTo capture the Video Viewer window to a file To capture the Video Viewer window to your clipboardConsole Menu Network ConfigurationTo configure network settings using the Console menu Console Main Menu Terminal Operations To add a user to the DSR switch database Security ConfigurationTo rename a user in the DSR switch database Other Console Main Menu OptionsTo remove a user from the DSR switch database Reset CertificatesRestore Factory Defaults Enable Debug MessagesReset Appliance Firmware ManagementTo upgrade the DSR switch firmware using the DSView software Appendix a Flash UpgradesDSR Switch Installer/User Guide Appendix B Technical Support To resolve an issueBefore you begin Appendix C Using DSView Software Over a Modem ConnectionDSRIQ-SRL module modes Appendix D Using DSRIQ-SRL ModulesIs Ctrl-F8 To create a macro To configure a DSRIQ-SRL moduleCreating a DSRIQ-SRL module macro Table D.1 DSRIQ-SRL Module Pinouts To use History modeHost Signal Signal Flow SRL Signal Pin Name/Description Appendix E UTP Cabling Table E.1 UTP Wiring Standards PinCabling installation, maintenance and safety tips Appendix F Technical Specifications Dimensions Table F.1 DSR Switch Product Specifications SPC Device PortPower Supply USB Device PortAppendix G Sun Advanced Key Emulation DSR Switch Installer/User Guide Numerics IndexModule 6, 7, 8, 9, 10, 43, 69, 73 Mode 74, 75 PPP Screen Saver Secure Mode Sessions User Connections