CHAPTER 3: Compatibility and Signal Processing

3.Compatibility and Signal Processing

This chapter discusses technical details of how the ServSwitch Brand Fiber KVM Extender II and II-SM process I/O signals, and how that processing affects compatibility with various equipment.

3.1 Video Processing

The extender’s local unit contains powerful electronics to process your video signal with superior quality. Video input is digitized as 16-bit data (65,536 colors). The local unit can accept these resolutions and vertical refresh rates (though the refresh rate output by the remote unit is always 60, 75, or 85 Hz):

DOS mode at 640 x 400, 720 x 400, 640 x 350, or 720 x 350 at up to 85 Hz

VGA 640 x 480 at up to 85 Hz

SVGA 800 x 600 at up to 85 Hz

XGA 1024 x 768 at up to 75 Hz

VGA-compatible 1152 x 864 at up to 75 Hz

SXGA 1280 x 1024 at up to 72 Hz

UXGA 1600 x 1200 at 60 Hz

It also accepts these synchronization options (though the remote unit always outputs separate horizontal and vertical sync):

Separate horizontal and vertical sync (RGBHV), common on PCs.

Composite sync on the horizontal sync line (RGBS), used in some older machine-control systems.

Composite sync overlaid on the green color signal (RGsB, “sync on green”), common on many UNIX® workstations.

Almost all non-DDC signals that might be received from the attached computer CPU at the “CPU Video” connector are passed through to the “Local Video” connector for the optional local monitor. These signals are buffered internally for better signal integrity.

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Black Box ACS250A-R2, ACS251A-R2 manual Compatibility and Signal Processing, Video Processing

BLACK BOX ServSwitch Brand KVM Extender, ACS251A-R2, ACS250A-R2 specifications

The Black Box ACS250A-R2 and ACS251A-R2, part of the renowned Black Box ServSwitch brand, are sophisticated KVM (Keyboard, Video, Mouse) extenders designed to enhance the connectivity and management of computers in various settings. These devices enable users to control multiple computers from a distance, making them essential for data centers, IT environments, and any operation requiring high efficiency and technology integration.

One of the main features of the ACS250A-R2 and ACS251A-R2 is their ability to extend video signals up to 150 meters (approximately 500 feet) over a single Cat5e or Cat6 cable, which reduces the clutter of multiple cables while ensuring high-quality video output. This capability allows users to position their computers in secure or controlled environments while maintaining access from a remote location. This not only enhances security but also contributes to better thermal management and reduced noise levels in the workspace.

The ACS250A-R2 supports a resolution of up to 1920 x 1200 at 60 Hz, ensuring crystal-clear visuals whether for intricate graphics applications or standard desktop activities. In contrast, the ACS251A-R2 can achieve even higher resolutions, making it suitable for high-definition applications. Both models include plug-and-play functionality, allowing for easy installation without the need for additional software or drivers.

In terms of durability and performance, both models are equipped with advanced technologies such as video compression algorithms to reduce latency and improve signal integrity, ensuring that users experience seamless operation. Additionally, they are designed to be robust and reliable, making them ideal for mission-critical applications where downtime can lead to significant losses.

The KVM extenders also support USB 2.0 peripherals, allowing users to connect various devices, including printers and flash drives, enhancing the versatility of their system. With support for multiple operating systems, these extenders are an excellent choice for diverse IT environments, compatible with Windows, Mac, and Linux systems alike.

Overall, the Black Box ACS250A-R2 and ACS251A-R2 KVM extenders encapsulate a blend of advanced features, reliability, and performance efficiency. They serve as powerful solutions for extending KVM capabilities, making them indispensable tools in modern IT infrastructure management.