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Black Box ACU5050A-R2 manual Video compensation, What is skew and why is compensation needed?

Models: ACU5050A-R2 ServSwitch Wizard VGA/USB

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ServSwitch Wizard VGA/USB

3.4 Video compensation

The ServSwitch Wizard VGA-USB modules include a video compensation system that allows you to get the best results from your remote video display(s). Using this special mode you can configure:

•Cable type - Select the type of link cable used.

•Cable length - Enter the length of the link cable.

•Video gain - Alter the signal gain for the image.

•Color skew - Adjust the timing of each color to fine tune the image.

•Expert mode - Please contact Black Box technical support for details.

What is skew and why is compensation needed?

The twisted pair cabling supported by the ServSwitch Wizard VGA-USB modules consists of four pairs of wires per cable, three of which are used to convey red, green and blue video signals to the remote video monitor. Due to the slight difference in twist rate between these three pairs, the red, green and blue video signals may not arrive at precisely the correct times. This is visible as separate color shadows on high contrast screen images. This effect is particularly apparent when using higher screen resolutions and some types of category 5e cables.

The video compensation system within the remote module allows you to delay or advance the timing of any of the color signals so that they all arrive at the monitor at the correct times.

Take a close look at a locally connected display. From left to right, groups of pixels are usually arranged in the order: R / G

/B and the signals must arrive in the correct order to obtain the optimum screen image. The skewtest.exe pattern (on the supplied CD-ROM) in particular helps to highlight the pixel layout by showing very narrow horizontal and vertical lines.

Test images while compensating

For best results while adjusting video compensation, arrange a combination of elements on the remote display. We suggest the following:

•Roughly half of the screen to display standard operating system color icons on a mid- green wallpaper.

•A quarter screen of the skewtest.exe pattern (available on the supplied CD-ROM).

•A quarter screen of standard black text on a white background.

Note: You need to set all of the above BEFORE entering video compensation mode because the USB keyboard will be isolated from the computer.

The skewtest.exe test pattern showing its RGB

crosses. In this case, the green signal can be seen out of line with the other two colors.

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Black Box ACU5050A-R2, ServSwitch Wizard VGA/USB manual Video compensation, What is skew and why is compensation needed?
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ACU5050A-R2, ServSwitch Wizard VGA/USB specifications

The Black Box ServSwitch Wizard VGA/USB is a versatile KVM (Keyboard, Video, Mouse) switch that allows users to control multiple computers from a single set of peripherals. This product plays a crucial role in IT environments where efficient management of numerous systems is required. The ServSwitch Wizard, particularly the ACU5250A-R2 and ACU505A-R2 models, boasts several innovative features and technologies that enhance its functionality and user experience.

One of the standout features of the ServSwitch Wizard is its support for multiple video resolutions, ensuring compatibility with a wide range of display devices. This capability allows users to utilize high-definition video outputs up to 1920 x 1200 pixels, making it suitable for professional applications, such as graphic design and video editing. The switch also supports various VGA and USB interfaces, enabling seamless connections with different types of devices.

The ACU5250A-R2 model is particularly notable for its ability to connect up to 8 computers, while the ACU505A-R2 provides support for 4 computers. This scalability makes these devices ideal for small to medium-sized businesses, data centers, and home office setups, where space and efficiency are paramount. Users can easily switch between connected systems using a simple hotkey or button press, streamlining workflows and improving productivity.

In addition to video and peripheral support, the ServSwitch Wizard features advanced cable management options. Each unit includes an integrated cable organizer that helps prevent tangling and clutter, ensuring that the setup remains tidy and functional. The robust design also enhances durability, making these switches suitable for continuous use in demanding environments.

Both models emphasize ease of installation and use, making them accessible even for users with minimal technical knowledge. Plug-and-play functionality allows for quick setup, with no additional software required. The switches also come equipped with a built-in LED indicator that facilitates the identification of active devices.

Moreover, the Black Box ServSwitch Wizard is designed to ensure reliable performance with minimal signal degradation. This is particularly important for users who rely on high-quality video output for critical tasks. The combination of innovative features, user-friendly design, and robust technology makes the ACU5250A-R2 and ACU505A-R2 an excellent choice for anyone looking to optimize their workspace while maintaining control over multiple computers.