Chapter 5: The Video Viewer

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Target video settings

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 corrects video issues.

When clicking Auto Adjust several times does not set the contrast and brightness as desired, adjusting the contrast and brightness manually can help. 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, which is indicated by little dots changing in the area of the cursor when it is moved. Varying the threshold values may result in “quieter” screens and can improve cursor tracking.

You can modify Noise Threshold and Priority Threshold values if you are using standard video compression. You can also modify Block Noise Threshold and Pixel Noise Threshold values. You can restore default threshold values 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.

•The Block Noise Threshold sets the minimum color change that occurs in a single video block. Increasing the value reduces the network bandwidth. Decreasing the value makes the size of these artifacts smaller.

•The Pixel Noise Threshold sets the minimum color change in a single pixel. Decreasing the value reduces the number of low-contrast artifacts, but increases network bandwidth.

See Adjusting the view on page 70 for information about changing the color depth.

Automatic video adjustment

In most cases, you do not need to alter the Video Settings from the default. The system automatically adjusts and uses the optimal video parameters. The AutoView 3008/3016 switch OBWI performs best when the video parameters are set such that no (0) video packets are transmitted for a static screen.

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Avocent 3008, 3016 manual Target video settings, Contrast and brightness, Detection thresholds, Automatic video adjustment
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3016, 3008/3016, 3008 specifications

The Avocent 3008, 3016, and 3016 KVM (Keyboard, Video, Mouse) switches are advanced solutions in the field of IT management, designed for data center environments that require seamless control over multiple servers and devices. These switches are known for their reliability, performance, and user-friendly features, making them essential tools for system administrators and IT professionals.

One of the primary features of the Avocent 3008 and 3016 series is their capability to manage multiple servers simultaneously. The model numbers denote the number of devices that can be controlled, with the 3008 supporting up to eight servers and the 3016 accommodating up to sixteen. This allows IT professionals to maximize their control and minimize the physical hardware required in server rooms.

Both the 3008 and 3016 support high-definition video output, ensuring that users receive clear and crisp visual displays from their servers. The ability to handle resolutions up to 1920x1200 at high refresh rates facilitates smooth and efficient operation, especially for graphics-intensive applications. The integrated video compression technology further enhances this capability by ensuring optimal video performance across different server configurations.

Security is another critical aspect of the Avocent switches. They come equipped with advanced user authentication and access management features, which prevents unauthorized access to the connected devices. The switches comply with various security standards, ensuring that sensitive data is protected throughout the management process.

The Avocent 3008 and 3016 also boast an intuitive on-screen display (OSD) that simplifies the user interface. This feature enables users to easily navigate between connected servers, manage settings, and access administrative functions with minimal effort. In addition, they support a variety of connection interfaces, including USB and PS/2, to accommodate different types of keyboards and mice.

In terms of connectivity, the Avocent switches support both local and remote access, allowing system administrators to manage servers from anywhere within the network. This flexibility is essential for modern IT operations, where remote management has become a standard practice.

Overall, the Avocent 3008 and 3016 series KVM switches offer robust features, advanced technology, and user-friendly designs. Their ability to manage multiple servers efficiently, combined with high-definition video support, enhanced security measures, and flexible connectivity options, makes them ideal for any data center looking to optimize its IT management processes. Whether for small businesses or large enterprises, these KVM switches help streamline operations and improve overall productivity.
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