Artikel-Bibliothek

Glasfaserkabel in AV‑Systemen

Die Kombination aus Licht und Glas ist einzigartig und für AV‑Profis ein leistungsstarkes Hilfsmittel in gängigen AV‑Anwendungen. Ein Glasfaserkabel kann zur Übertragung von hochauflösenden Video-, Audio- und Steuerungssignalen mit einer einzelnen Glasfaser über 30 km verwendet werden und es verhindert Signalverlust... Weiterlesen

VoIP

DMP 128 Plus C V and DMP 128 Plus C V AT models include up to eight VoIP lines, with wideband codec support, that can be configured as individual extensions or with multiple call appearance channels to support local conferencing applications. Compatible with select VoIP systems, any V model of the DMP 128 Plus Series can... Weiterlesen

A Fiber Optic Connector Primer

Optical fiber transmission of AV signals has come of age and it's time to take another step along this new, adventurous road. A fiber solution may sound like a great idea for those challenging long-haul or highly secure applications, and then reality sets in. The fiber transmission solution is still a serious investment... Weiterlesen

HD-SDI: More Possibilities than Just Television

It seems that the popular concept of digital video among the masses arrived with the DVI connection to the computer monitor. Of course, the DV format for consumer video cameras arrived earlier, but for most it just didn't seem like digital video. Why? I think we've only recognized what digital video can be since the moment... Weiterlesen

Die Auswahl der richtigen H.264-Lösung

Die Auswahl der richtigen H.264-Lösung Was ist H.264? H.264 ist ein Standard zur Videokompression, auch bekannt als MPEG-4 Part 10 oder MPEG-4 AVC. Er wurde entwickelt von der ITU-T Video Coding Experts Group (VCEG) zusammen mit der ISO/IEC Moving Picture Experts Group (MPEG) und ist das Ergebnis... Weiterlesen

Videowall System Control

Videowall System Control Videowalls are among the most complex types of AV systems to set up and configure. Most of the operational complexity is within the videowall processor and its many functions, features, and capabilities. Working with a videowall processor will be greatly simplified if an intuitive, user-friendly... Weiterlesen

HDMI 2.0: Überblick über die Spezifikationen und FAQ

HDMI 2.0 wurde vom HDMI-Forum entwickelt, um diese weitverbreitete Technologie mit neuer Funktionalität zu erweitern. Die Spezifikation wurde im September 2013 veröffentlicht und umfasst Support für eine höhere Bandbreite von bis zu 18 Gbps, Auflösungen von bis zu 4K/60 Hz, simultane Übertragung von zwei... Weiterlesen

Die Bedeutung der Qualität von HDMI-Kabeln in professionellen AV‑Systemen

Im Internet kursiert die weit verbreitete Ansicht, dass alle HDMI-Kabel gleich sind. Wenn am Ende des Kabels ein Bild ausgegeben wird, merkt man keinen Unterschied zwischen einem preiswerten Kabel und einem Kabel, das drei oder zehn mal soviel kostet. Dies kann man denke ich sagen, wenn ein 99 € teurer Blu-ray Player... (Anmeldung erforderlich: ) Weiterlesen

Multiplexing AV Signals in Fiber Optic Systems

Multiplexing Signals in Fiber Optic Systems TDM combines multiple digital signals into a single serial digital bit stream. A specialized circuit, called a serializer, allocates parallel input streams into time slots in the serial output. In a fiber optic system, the serial bit stream is transmitted as a single wavelength... Weiterlesen

Calculating ROI

One of the key factors used in determining whether or not to purchase new classroom technology is a calculation of Return on Investment, or ROI. While there are many factors to consider, ROI generally falls into two main categories: hard returns, which can be demonstrated in financial terms, and soft returns that are less... Weiterlesen

8K-Datenratenrechner

Der Rechner für 8K-Videodatenraten und Takt ist ein Onlinewerkzeug, das Sie beim Design, der Installation und Einrichtung Ihres Systems unterstützt. Mit dem Basisrechner können Sie schnell die maximale digitale Datenrate ermitteln, die von Kabeln, Skalierern oder anderen Systemkomponenten basierend auf der ausgewählten... Weiterlesen

Extrons 4K AV-Umschaltung, Verteilung und Steuerung serviert Multimedia im Restaurant Neptun in Hong Kong

Um Aufmerksamkeit zu erregen ist es schwer, um mit einem 13 m breiten Aquarium vom Boden bis zur Decke, in dem 5000 farbige Meerestiere wimmeln, nur eine Armlänge von Ihrem Tisch mit von einem Sternekoch zubereiteten Feinschmecker-Gerichten zu konkurrieren. Aber das Restaurant Neptun im Ocean Park-Ozeanarium... Weiterlesen

Die Bedeutung der Qualität von HDMI-Kabeln in professionellen AV‑Systemen

Digital Design Best Practices - Signal Integrity

This article concentrates on signal integrity, one of the three core components in digital system architecture. The other two, equally important components are content protection and resolution management. Signal integrity relates to maintaining the signal waveforms and sync timing throughout the signal path so that the... Weiterlesen

HDMI: The Short and the Long of It

HDMI, or High Definition Multimedia Interface, is a digital AV interface that supports high resolution computer-video and HDTV as well as multiple channels of audio on a single cable. It is prevalent in flat-panel displays and projectors as well as DVD players, Blu-ray Disc players, and even some laptops and PC graphics... Weiterlesen

DVI und HDMI: Eine Zusammenfassung

Die meisten DVI-Eingangskabel für Computermonitore sind genau wie die üblichen analogen VGA-Eingangskabel zwei Meter lang. Für uns Systemdesigner sind zwei Meter zu kurz. Wenn digitale AV-Schnittstellen sich durchsetzen, werden diese einfachen Desktop-Anschlüsse nicht länger die Norm sein. Systemdesigner und... Weiterlesen

HD-SDI: More Possibilities than Just Television

Digital Video: Are You 4:2:2 Compliant?

Maintaining the original quality of an analog event is paramount in the television broadcast industry. This concern alone drove the development and adoption of the ubiquitous digital recording format referred to using various names: 4:2:2 Component Digital, CCIR 601, D1, or perhaps SDI (Serial Digital Interface). Why is... Weiterlesen

HDMI 2.0: Überblick über die Spezifikationen und FAQ

Extrons 4K AV-Umschaltung, Verteilung und Steuerung serviert Multimedia im Restaurant Neptun in Hong Kong

Calculating ROI

Understanding the Control Project Timeline

The AV Project Lifecycle from a Control System Design Perspective This control project timeline presents a best-case scenario for a well-organized AV installation. It proposes a systematic, logical workflow that integrators and project managers can reference during a project, or, ideally, prior to a project’s... Weiterlesen

VoIP

Extrons 4K AV-Umschaltung, Verteilung und Steuerung serviert Multimedia im Restaurant Neptun in Hong Kong

Ceiling Speaker Calculator

The Ceiling Speaker Calculator is a convenient online tool and a valuable resource for estimating the number of ceiling speakers needed for a sound reinforcement system in a room or listening area. Simply enter some basic information including room dimensions, the Extron ceiling speaker model, the type of... Weiterlesen

Class D Amplifiers – Not 'Just Audio'

Yes, I'm a video guy. You've probably heard one of us (not me) disrespectfully downplay the ubiquitous field of aural engineering as "it's just audio". This article is about audio, but don't energize your shields just yet. I'm on your side... veteran project manager of an audio system having CD quality signal-to-noise...

Extron's Patented Ripple Steering Class D Audio Amplifier Technology

Class D Audio Power Amplifiers offer the highest efficiency possible, resulting in cooler running, longer lasting products. They are not without their drawbacks, however, one of these typically being increased EMI - Electromagnetic Interference. Extron's proprietary Ripple Steering technology greatly improves the EMI performance... Weiterlesen

Plenum-Rated — More Than Just Cables and Speakers

Many of us automatically think of cable or speakers when we hear the word "plenum". It is generally known that Extron has offered plenum-rated cable for years; however, many are unaware that we offer other types of plenum-rated products as well. These products are designed to provide convenience and installation flexibility... Weiterlesen

The Mysterious Loudness Control: What Does It Do?

The first really decent stereo audio system I owned had a pushbutton on the front panel called "loudness." I pushed it. I decided the audio sounded better so I left it pushed in; never changed it. OK, occasionally I would push it to the off position; nope, sounded better on. Thinking back, I really didn't care what it... Weiterlesen

Die Auswahl der richtigen H.264-Lösung

Avoiding Common Pitfalls Integrating AV Products onto IP Networks

Advancements in audiovisual technology have brought changes to the ways audio, video, and data connect between sources, displays, and control systems. Today, the AV industry is in the midst of a transition to a new digital transmission infrastructure based on DVI, HDMI, and SDI. This transition brings with it many challenges,... (Anmeldung erforderlich: ) Weiterlesen

Training the Future Doctors of British Columbia

Early in 2002, British Columbia was faced with a critical shortage of doctors to serve its approximately 4.6 million citizens. Additionally, the northern, southern, and island regions had a difficult time enticing new doctors to set up practices beyond Vancouver’s metropolitan area. Two primary factors contributed to this... (Anmeldung erforderlich: ) Weiterlesen

A Fiber Optic Connector Primer

Campus Technology

Universities are centers of research as well as institutions for higher learning. Campuses feature multiple buildings with classrooms, offices, .... Weiterlesen

Courtroom of the Future

The Courtroom of the Future relies on a fiber infrastructure to ensure that future upgrades to the AV system can use the existing cabling. It provides a... Weiterlesen

Digital Signage

This pharmaceutical building has public lobbies for customer access and general admittance to the site. Employee lounges and cafeterias are ... Weiterlesen

Fiber Optic Frequently Asked Questions

The following provides you with questions and answers about Extron Fiber Optic products: What is optical fiber? What is multimode fiber? What is singlemode fiber? How is an AV signal transmitted down a fiber? What is a light-emitting diode? What is a laser diode? What is a VCSEL? What is a photodetector? What... Weiterlesen

Fiber Optic Transmission in AV Comes of Age

Folks, the good ol' days are here right now. More technical solutions are available for audiovisual systems designers in both analog and digital equipment than ever before. One of the most exciting new toys for signal distribution is RGBHV digital fiber optic transmission. Most currently installed fiber transmission... Weiterlesen

Glasfaserkabel in AV‑Systemen

Knowledge Wall

A knowledge wall is the center of aggregated information used for monitoring and analyzing to make critical decisions related to security, emergency services... Weiterlesen

Multiplexing AV Signals in Fiber Optic Systems

Integration Opportunities with 4K Displays

Displays with 4K, or roughly 4K×2K resolution provide a solution for applications requiring a greater number of pixels on large screens. In 2005, the first 4K projection displays were introduced and began to be integrated into digital cinema, simulation, defense, medical, entertainment, and other environments. Since then,... (Anmeldung erforderlich: ) Weiterlesen

Setting Up a Scan Converter

Properly setting up a scan converter can make all the difference in the world in respect to image quality. A little fine-tuning can make the difference between a poor image and a good image. To obtain the best image, certain adjustments should be made each time a scan converter is used in a new application. The sequence... Weiterlesen

Courtroom of the Future - System Design Solution

The Courtroom of the Future relies on a fiber infrastructure to ensure that future upgrades to the AV system can use the existing cabling. It provides a model that can be readily adapted to various applications such as municipal, county, district, or superior courts. The AV system provides a modern means of presenting... Weiterlesen

Environmental Considerations and Human Factors for Videowall Design

Environmental Considerations and Human Factors for Videowall Design The ability to present clear, high quality imagery from multiple sources and at large sizes makes videowalls valuable for maintaining situational awareness, as mission-critical information... Weiterlesen

Font Size and Legibility for Videowall Content

Legibility is very important for any videowall application with sources that include alphanumeric text. Viewers should be able to easily read text at all intended viewing distances without eyestrain. Delivering adequately sized text can be accomplished by scaling up or enlarging the source to make fonts legible, or... Weiterlesen

Videowall Processor Features

Videowall Processor Features Videowall processors are available with a wide range of features and capabilities. Many of them relate to system performance, image quality, and reliability, while others can help streamline system design... Weiterlesen

Videowall System Control

Why a Videowall?

Why a Videowall? A videowall typically requires a significant investment, and is often the most expensive line item in a facility’s capital outlay for an AV project. While the videowall functions as a single display, it is always important to... Weiterlesen

Choosing the Right Videowall Shape and Size

Choosing the Right Videowall Shape and Size Deciding how large a videowall should be is more than a matter of determining how many display devices are required to fill a space on a wall. The manner in which the videowall will be used, the types and quantity of information to be presented, and the size and shape... Weiterlesen

What Is 3:2 Pulldown?

Film runs at a rate of 24 frames per second, and video that adheres to the NTSC television standard runs at 30 frames a second. When film is converted to NTSC video, the frame rates need to be matched in order for the film-to-video conversion to take place. This process of matching the film frame rate to the video frame... Weiterlesen

USB Switching in AV Environments

USB is a popular standard that has been around since 1995. Its evolution has extended to the point where each of us utilizes this interface on a daily basis. USB ports are standard fixtures on computers and laptops with further extension recently onto other peripheral devices .... Weiterlesen