Cable Blog

USB Cable

by admin on 二.07, 2010, under cable

USB Cable

Madison Technologies is Australia’s leading provider of Communications Infrastructure products.

Madison has four business divisions comprising of Telecommunications, Building services, AV & Broadcast and Industrial IT & C.

Our core business focus is being a distributor of Fibre Cable, Copper Cable, Coaxial Cable, LAN Cable, Telephone Cable, Industrial Cable and connectors for brands such as Belden, Garland, Optimal and R & M.

Madison Technologies specialist Broadcast & AV Division has long been supporting Broadcasters, Venues, Contractors and Integrators, with custom made solutions and fully integrated systems. Included in the range are Communications and Intercom systems, Digital Audio Mixers, Microphone systems and accessories, Video distribution systems, Audio Interface Products, Audio, Video Patching systems, Stage Boxes and Multicores , AV Cable and Connector Products, Racks and Cabinets, Studio and Broadcast audio devices, and tooling.

With brands such as ProCo, Amphenol, Kings, Bittree, ClockAudio, Neutrik, Paladin Tools, Momentum, Kramer and DIGIDESIGN VENUE Madison can provide a complete solution.

Madison supply cable, tools and connectivity for indoor and outdoor applications in enterprise, industrial and residential environments. We provide products for fibre networks through to multimedia systems for Industry, Enterprise, campus and data systems. Solutions include a variety of standard and custom cables for different applications, and a wide range of equipment to connect, convert and adapt fibre and copper infrastructure.

Some of the industry leading brands we are partnered with include Belden IBDN, Garland, R&M, Optimal, Emtelle, Allied Telesis, Homeworx and Roadworx. Our team can also assist in network design, performance testing, standards information you may need for your enterprise cabling solutions.

With over 100 staff and offices in every capital city you can relax… We’ll make it happen.

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Lan Cable

by admin on 二.07, 2010, under cable

Lan Cable

Telecommunication Cables

Our company has been involved for over 20 years in the manufacture and export of a wide array of cables. Our range of cables includes coaxial cables, multicore coaxial cables, rf coaxial cables, insulated coaxial cables, shielded multicore cables, LAN cables, fibre optic cable assembly, cable assemblies for telecom sector, CATV Coaxial Cables and PCM cables. The high quality of our range has enabled us to gain clients, not only in our country, but also across the globe. Following is a description of our range of cables.

Coaxial Cables

Our range of coaxial cables is extremely popular in the telecom industry and is often used for the purpose of transmission lines for radio frequency signals. These coaxial cables are manufactured from high grade copper and aluminum and consist of a tubular layer that provides insulation to the inner conductor. This is further covered by another conductive layer that allows the cable its flexibility and then there is a final covering with a layer of insulation.

These cables provide elevated levels of protection to the signals being emitted, from electromagnetic interferences from outside sources. This allows the cable to transmit the signals more effectively.

Multicore Coaxial Cables

We offer our clients a range of multi-core coaxial cables which are widely utilized in industries such as telecom, railway and defense. Manufactured from high grade copper and aluminum, these cables are guaranteed to provide:

Durability

Longevity

Cost effectiveness

Perfect transmission

CATV Cables

Our range of CATV Coaxial cables provide a significantly lower signal loss, and are hence appreciated in the broadcasting industry. Our cables are of 75 Ohm and capable of meeting the most elevated standards of system performance. The cables are injected with gas and are further insulated with foam PE; which offers low attenuation value.

Our range has been utilized extensively in:

Private homes.

Apartment complexes.

Satellite receivers.

Community antenna systems.

PCM Cables

The PCM cables manufactured by our organization find wide usage in mobile communication and installation of antennas. These allow flawless communication between control rooms and transmitters that emit low level signals. We offer our entire range in standard sizes, and can also manufacture them as per the needs of the clients.

Some of the other features include:

Tin-copper conductor of 0.51mm.

Electrolytic type reflects 99.9% purity.

Provides 80-85% of precise braiding coverage.

Available in multi-core shielded and tin-copper constructions.

LAN Cables

Also known as Unshielded Twisted Pair or UTP, the LAN cables provided by our company are known for their high quality. These are manufactured utilizing high grade steel or aluminum wires. Our organization is known to employ modern machinery, which ensures cables of flawless quality.

Some of the other salient features are:

Durability

Flexibility

High safety

Extended functionality

Cost effective

Shielded Multicore Cables

Our range of shielded cables are manufactured from superior grade metal alloys, and offer greater durability, longevity and cost effectiveness. Available in varied lengths, these cables can be manufactured as per the specifications of the clients and can also be packaged as per customer requirements.

Our shielded multi-core cables find application in:

Electrical power supply.

Electrical appliances.

Modern equipments.

Fiber Optic Cable Assemblies

We pride ourselves on the variety of cable assemblies that we provide to our clients. As our cables are manufactured to be of the highest quality, we have gained clients within the country and all over the globe.

There are a variety of fibre optic cable assemblies such as:

ST Connectors: These are common connectors for multimode fibres and comprise of slotted bayonet type connector with long ferrule.

FC Connectors: These are extremely popular with single mode fibres and are generally screw on type connectors.

SC Connectors: These are push or pull type connectors that can be utilized with duplex fibre construction.

LC Connectors: Like the ST connector, the LT connectors too are ideal for multimode fibres, but have a ferrule that is half the size.

MT-RJ Connectors: These connectors are figured for duplex fibers, where both fibers are enclosed within one ferrule.

MU Connectors: These are also push or pull style connectors, but have a ferrule size that is half of the SC connectors.

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A Girls Guide To Patch Panels

by admin on 一.07, 2010, under Patch Panel

One of the annoying things about breaking up with your boyfriend of many years is the process of moving on and being able to do things yourself again. There are certain things in my experience that I could have done without, but many things that I could have really used to help me on my daily life. Such is the sad notion of splitting with someone who was a computer genius and would always take care of my home technology system; however, this is the only thing I will miss of him as I do wish I had taken more notice of what he used to do.

Nevertheless, moving on is exciting and I soon learnt how to use a computer properly. It turned out that it was not as bad as one would think it to be. I decided that it was time that I begin learning about all things technological, considering I would be attached to my computer for a long time. I got a little carried away and came across terms like server racks, connectors, switches and patch panels. I never knew what any of these terms meant and decided to put my brain into use by researching this topic of networking.

Not everybody are technologically astute, even though I have been using my home computer for many years, I still need help in setting up the network connection between multiple computers. However, patch panels alone are an important and vital piece of equipment in the world of electrical and communication systems. You may or may not have heard of these, but I will try to give you a clear picture of what it would look to the nonprofessional.

Imagine a grainy film of the 1940’s, possibly during the Second World War and seeing the telephone switchboards. Back then, telephone calls were transferred from switching one wire from one connector and connecting it onto another socket. This method was known as ‘patching through’, which is putting the call through to the other person. These were the earliest forms of patch panels used for communication connections and have since developed into becoming a useful data-transferring device.

At this point one may be thinking how any of this is relevant to them. The point is that patch panels are good for connecting computers together for something called a LAN (Local Area Network). These are great for having people all networked together to transfer data, share files and best of all play games against each other (a great way of getting over the old ex!). These are important for connecting the computer to a network and onto the internet; hence it is good to be knowledgeable.

Note that this is a manual process of interconnecting cables, so you as the user would need to plug and unplug the cables keeping you in control of all of the connections. Of course, we no longer see these cables for connecting phone calls, but new alternatives and devices are still readily used today for communication networking. These are even used in music recording studios, broadcasting studios, telephone connections, computers, audio and video production studios, and other communication studios.

These are extremely cost effective and cheaper than most switching equipments. These also have a good power failing protector, which is handy for keeping this running smoothly and without losing any valuable information. They have also made available wireless patch panels, which works by switching connections simply by using a switch!

Maybe the best way to show you are doing well in getting over your ex, is by showing off your knowledge on how to network computers together and talk about patch panels. It works like a charm!

Patch Panels

Patch Panels

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What Uses For Patch Panels?

by admin on 一.07, 2010, under Patch Panel

Possibly one of the most intelligent electrical devices invented for fast connectivity and transference of data is the patch panel. As much as one would normally shrug their shoulders after hearing the name, it is something that is extremely useful and can be used for virtually anything that requires a fast connection. They are typically seen in household connectors, with the shorter cable into the front of the patch panels, and the longer cable connected to the back.

Historically these were seen in black and white movies, where a wonderful image of a female operator was busy switching the cables on a patch panel connecting and transferring telephone calls. To this day these are still used for telephone usage and connecting line communication between people. These are popularly used for transferring data information and connecting up audio and visual equipment.

The patch panels can come with cables of varying lengths, which can also be available with different types of connectors. An example of this is the break box, which has its own connector on the front and other compound connectors on the back that other cables can plug into. Some breakout boxes are made with an even number of connectors on each side, however some are made with a random number of connectors.

These are more commonly used for connecting computers up together for networking computers up together under the same network. They are useful for connecting the computers onto the internet; the Local Area Network (LAN) uses them to connect a number of computers together to use the internet. Similarly they are also used to connect the LAN onto the WAN (wider area network).

The patch panels transmit signals from one cable to another without losing any data during the transmission process. These panels may seem like just another cable but they are one of the best tools for data transference, making them reliable and efficient. It is also easy to change cables from the front, switching them without losing the signal, as the rear of the panel does not differentiate the cable signals from each other.

As technology has developed the panels have come in very useful for many companies and businesses, as they are essential for passing on information. New software’s have been developed to enhance the efficiency of the patch panel, in transferring data. The software monitors, and records, the data that is being transferred, making it easier to keep track of important work being transferred monitoring any problems or issues that may arise.

These are also good for maintenance of the cables and the panels. They track any changes in the core temperature and also any fluctuations in the power supply. The panels are more easily updated and any issues can be resolved swiftly without having to dig too deep into the machine.

Patch Panels

Patch Panels

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HDMI Cable b2b

by admin on 九.29, 2009, under cable

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Fiber Optic History

by admin on 十二.25, 2008, under Fiber Optic

fiber splice
The need for reliable long-distance communication systems has existed since antiquity. Over time, the sophistication of these systems has gradually improved, from smoke signals to telegraphs and finally to the first coaxial cable, put into service in 1940. As these communication systems improved, certain fundamental limitations presented themselves. Electrical systems were limited by their small repeater spacing (the distance a signal can propagate before attenuation requires the signal to be amplified), and the bit rate of microwave systems was limited by their carrier frequency. In the second half of the twentieth century, it was realized that an optical carrier of information would have a significant advantage over the existing electrical and microwave carrier signals.

In 1966 Kao and Hockham proposed optical fibers at STC Laboratories (STL), Harlow, when they showed that the losses of 1000 db/km in existing glass (compared to 5-10 db/km in coaxial cable) was due to contaminants, which could potentially be removed.

The development of lasers in the 1960s solved the first problem of a light source, further development of high-quality optical fiber was needed as a solution to the second. Optical fiber was finally developed in 1970 by Corning Glass Works with attenuation low enough for communication purposes (about 20dB/km), and at the same time GaAs semiconductor lasers were developed that were compact and therefore suitable for fiber-optic communication systems.

After a period of intensive research from 1975 to 1980, the first commercial fiber-optic communication system was developed, which operated at a wavelength around 0.8 µm and used GaAs semiconductor lasers. This first generation system operated at a bit rate of 45 Mbit/s with repeater spacing of up to 10 km.

On 22 April, 1977, General Telephone and Electronics sent the first live telephone traffic through fiber optics, at 6 Mbit/s, in Long Beach, California.

The second generation of fiber-optic communication was developed for commercial use in the early 1980s, operated at 1.3 µm, and used InGaAsP semiconductor lasers. Although these systems were initially limited by dispersion, in 1981 the single-mode fiber was revealed to greatly improve system performance. By 1987, these systems were operating at bit rates of up to 1.7 Gb/s with repeater spacing up to 50 km.

The first transatlantic telephone cable to use optical fiber was TAT-8, based on Desurvire optimized laser amplification technology. It went into operation in 1988.

TAT-8 was developed as the first undersea fiber optic link between the United States and Europe. TAT-8 is more than 3,000 nautical miles (5,600 km) in length and was the first transatlantic cable to use optical fibers. It was designed to handle a mix of information. When inaugurated, it had an estimated lifetime in excess of 20 years. TAT-8 was the first of a new class of cables, even though it had already been used in long-distance land and short-distance undersea operations. Its installation was preceded by extensive deep-water experiments and trials conducted in the early 1980s to demonstrate the project’s feasibility.

Third-generation fiber-optic systems operated at 1.55 µm and had loss of about 0.2 dB/km. They achieved this despite earlier difficulties with pulse-spreading at that wavelength using conventional InGaAsP semiconductor lasers. Scientists overcame this difficulty by using dispersion-shifted fibers designed to have minimal dispersion at 1.55 µm or by limiting the laser spectrum to a single longitudinal mode. These developments eventually allowed 3rd generation systems to operate commercially at 2.5 Gbit/s with repeater spacing in excess of 100 km.

The fourth generation of fiber-optic communication systems used optical amplification to reduce the need for repeaters and wavelength-division multiplexing to increase fiber capacity. These two improvements caused a revolution that resulted in the doubling of system capacity every 6 months starting in 1992 until a bit rate of 10 Tb/s was reached by 2001. Recently, bit-rates of up to 14 Tbit/s have been reached over a single 160 km line using optical amplifiers.

The focus of development for the fifth generation of fiber-optic communications is on extending the wavelength range over which a WDM system can operate. The conventional wavelength window, known as the C band, covers the wavelength range 1.53-1.57 µm, and the new dry fiber has a low-loss window promising an extension of that range to 1.30 to 1.65 µm. Other developments include the concept of “optical solitons, ” pulses that preserve their shape by counteracting the effects of dispersion with the nonlinear effects of the fiber by using pulses of a specific shape.

In the late 1990s through 2000, the fiber optic communication industry became associated with the dot-com bubble. Industry promoters, and research companies such as KMI and RHK predicted vast increases in demand for communications bandwidth due to increased use of the Internet, and commercialization of various bandwidth-intensive consumer services, such as video on demand. Internet protocol data traffic was said to be increasing exponentially, and at a faster rate than integrated circuit complexity had increased under Moore’s Law. From the bust of the dot-com bubble through 2006, however, the main trend in the industry has been consolidation of firms and offshoring of manufacturing to reduce costs.

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Fiber-optic Applications

by admin on 十二.25, 2008, under Fiber Optic

fiber splice lab
Optical fiber is used by many telecommunications companies to transmit telephone signals, Internet communication, and cable television signals. Due to much lower attenuation and interference, optical fiber has large advantages over existing copper wire in long-distance and high-demand applications. However, infrastructure development within cities was relatively difficult and time-consuming, and fiber-optic systems were complex and expensive to install and operate. Due to these difficulties, fiber-optic communication systems have primarily been installed in long-distance applications, where they can be used to their full transmission capacity, offsetting the increased cost. Since the year 2000, the prices for fiber-optic communications have dropped considerably. The price for rolling out fiber to the home has currently become more cost-effective than that of rolling out a copper based network. Prices have dropped to $850 per subscriber in the US and lower in countries like The Netherlands, where digging costs are low.

Since 1990, when optical-amplification systems became commercially available, the telecommunications industry has laid a vast network of intercity and transoceanic fiber communication lines. By 2002, an intercontinental network of 250,000 km of submarine communications cable with a capacity of 2.56 Tb/s was completed, and although specific network capacities are privileged information, telecommunications investment reports indicate that network capacity has increased dramatically since 2002.

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Fiber-optic communication

by admin on 十二.25, 2008, under Fiber Optic

fiber opticfiber optic
Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of light through an optical fiber. The light forms an electromagnetic carrier wave that is modulated to carry information. First developed in the 1970s, fiber-optic communication systems have revolutionized the telecommunications industry and have played a major role in the advent of the Information Age. Because of its advantages over electrical transmission, optical fibers have largely replaced copper wire communications in core networks in the developed world.

The process of communicating using fiber optics involves the following basic steps: Creating the optical signal involving the use a transmitter, relaying the signal along the fiber, ensuring that the signal does not become too distorted or weak, receiving the optical signal, and converting it into an electrical signal.

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Patch panel

by admin on 十二.03, 2008, under Patch Panel

patch-panel.jpg
A patch panel or patch bay or jackfield is a panel, typically rackmounted, that houses cable connections. One typically shorter patch cable will plug into the front side, while the back will hold the connection of a much longer and more permanent cable. The assembly of hardware is arranged so that a number of circuits, usually of the same or similar type, appear on jacks for monitoring, interconnecting, and testing circuits in a convenient, flexible manner.

A remote broadcast trailer’s jackfieldPatch panels offer the convenience of allowing technicians to quickly change the path of select signals, without the expense of dedicated switching equipment. This was first used by early telephone exchanges, where the telephone switchboard (a massive array of patch panels) and a large room full of telephone operators running it was ubiquitous.

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Music and sound recording

by admin on 十二.03, 2008, under cable

A variety of cables are used to carry electrical signals in sound recording studios and with electronic or electrical musical instruments. Microphones are typically connected to mixing boards or PA systems with XLR microphone cables which use three-pin XLR connectors. A huge range of electric or electronic instruments use 1/4 inch mono patch cords to connect the instrument to the amplifier, such as the electric guitar, electric bass, synthesizers, electric piano, or electronic drum machine. Musicians playing electric or electronic instruments often use longer cables (from 10 to 20 feet) between their instrument and their amplifier, and then use shorter patch cords (from a few inches long to one or two feet) to connect together chains of effects devices, “stomp box” pedals, or other signal processors.

DJs using record players connect their turntables to mixers or PA systems with stereo RCA connectors. DJs sometimes have to use equipment with multiple cable types, which can create connection difficulties; for example, the DJ’s record players and DJ mixer all use RCA connctors, but if they use a drum machine or a bass synth, it may have a 1/4 inch mono connector. To resolve this problem, DJs can either use adapters or special cables (e.g., RCA to 1/4 inch mono). Heavier-gauge cables are used for carrying amplified signals from amplifiers to speakers (both in a PA system and with instrument amplifiers). ¼” TRS connector cables can carry stereo signals, so they are used for stereo headphones and for some patching purposes (e.g., inserting an effect into an insert connection in a mixer).

Music venues, concert halls, and recording studios also use a thicker, hose-like cord called snake cable (or a “snake”), which consists of many individual cables in a bundle, with patch bays at either end so that audio gear can be connected. The patch bay is a flat panel of audio connectors where XLR cables (often both “male” and “female) and 1/4 inch jacks can be plugged in. The “snake” cable makes setup more convenient, because if a sound engineer did not have a “snake”, she or he would have to run 20 or 30 individual microphone and instrument cables from the stage to the mixing booth. The cables could get tangled up or mixed up, and it would be hard to know, when faced with 20 connectors at the end of the cable run, which cable was associated with which mic or instrument. The patch bay is numbered, so that the engineer can note which mic or instrument is plugged into each numbered connection.

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