CHAPTER 2: Introduction

2. Introduction

2.1 Overview

The purpose of the ServSwitch™ Brand Fiber KVM Extender is to greatly extend the distance between a Sun® or IBM® PC compatible computer CPU and the keyboard, mouse, monitor, and serial or parallel peripheral that the computer operator will be using, especially in electrically noisy environments. Normal keyboard-, video-, and mouse-extension cables (and extenders that use normal cabling) can only go so far, and electromagnetic noise can limit their distance and reliability. But with a fiberoptic system like the ServSwitch Brand Fiber KVM Extender, these concerns are a thing of the past. You can leave the computer CPU in a secured cabinet or data center while you operate it from a convenient location up to 1000 m (3281 ft.) away.

There are two models of the Extender. The PC version (product code ACS235A) extends KVM distance for IBM PC compatible computers. The Sun version (product code ACS236A) extends KVM distance for Sun Microsystems® computers. Each model consists of two main components: a Local Module that you’ll attach the computer’s CPU to, and a Remote Module that you’ll attach the user equipment to. (With the ACS235A, the “user equipment” will be an IBM PS/2® compatible keyboard and mouse, VGA type monitor, and an optional IBM PC compatible or Centronics® compatible parallel printer. With the ACS236A, it will be a Sun compatible keyboard and mouse, VGA or legacy Sun monitor, and an optional serial device.) You’ll connect the two units with a five-strand fiberoptic breakout cable. With this Extender, you’ll get high monitor resolution, optical isolation, and color fidelity, even in electrically rough surroundings.

The Extender units automatically adapt to the correct transfer rates for all of your data; you won’t need to manually set these rates. There is one setting you might need to make after you start operating the units: The Extenders’ amplification might need to be adjusted if you use very long fiberoptic cables. (The controls for this are located on the Remote Module—refer to Section 6.2.) And even this adjustment is easy to “eyeball” by watching the picture on the monitor screen.

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Black Box ACS235A, ACS236A manual Introduction, Overview
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ACS236A, ACS235A specifications

The Black Box ACS235A and ACS236A are advanced video and audio extenders designed to facilitate the transmission of high-quality multimedia signals over long distances, utilizing standard Ethernet infrastructure. These devices are essential for professional audio-video applications, such as conference rooms, classrooms, and broadcast studios, where reliable and high-definition signal distribution is crucial.

One of the standout features of the ACS235A and ACS236A is their support for high-definition video formats, including 1080p and 4K resolutions. This capability ensures that users can experience stunning visuals without degradation, even when transmitting over extensive distances. Both models utilize HDBaseT technology, which enables the transmission of uncompressed HD video, audio, control signals, and power over a single Cat5e/6 cable. This simplifies installation and reduces cabling costs while providing exceptional performance.

The ACS235A is equipped with HDMI input and output, making it ideal for connecting a variety of devices such as projectors, monitors, and media players. Its compact design allows for easy integration into existing setups without occupying excessive space. Additionally, it supports Power over Ethernet (PoE), meaning that it can receive power through the same cable that carries the data, enhancing flexibility in deployment.

Similarly, the ACS236A provides comprehensive support for audio and video formats and includes additional features such as RS-232 and IR control. This capability allows users to manage their equipment remotely, making it easier to control presentations or switch between multiple sources. The built-in LED indicators provide real-time status updates, making it simpler for users to monitor the system’s operation.

Both models are designed with durability in mind, incorporating robust housings and reliable connectors that ensure longevity even in demanding environments. Furthermore, they both support a wide range of operating temperatures, making them suitable for various installations, from corporate settings to educational institutions.

In summary, the Black Box ACS235A and ACS236A are powerful audio-video extenders that combine advanced technology with user-friendly features. Their ability to deliver high-quality signals over significant distances, along with remote control capabilities and efficient designs, makes them an excellent choice for anyone looking to enhance their multimedia installations.
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