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EngineerIT e-News
 
Electronics, automation, computer, information and communications technology in engineering
 
Issue number 46
July 2011 
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phoenix_sb_july 2011

National Instruments
In this issue...
- Local loop unbundling: too little too late?
- In conversation with McLean Sibanda
- Internship - the skills development solution?
- Emerging entrepreneur: Collen Mashawana
- Benefits of high-performance cloud computing for engineers
- Virtualisation: where do we stand in SA?
- Go native with native packet-optical transport
- Billboards that house base stations and antennae
- A broadside analysis of BWA spectrum in South Africa
- Improved switching with fast IGBTs create new challenges
- Fibre to the home - building the broadband community
- Turning-up 40 G sub-marine networks
- Overview of 100 G technologies
- Gadgets4Geeks
- Why choose AC servo control over a pneumatic option?
- Thermal imaging revisited
- Wireless datalogging - a case study
- Telecoms developments in Africa
- Stimulus-response measurements
- Fundamentals of silicon photonic devices
- Seven steps to analogue-to-digital signal conversion
- Views and opinion
- Industry and institute news
- Radio amateurs' achievements recognised
- Space technology
- Product and company news
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Kathleen RiceLocal loop unbundling: too little too late?
by Kathleen Rice, DLA Cliffe Dekker Hofmeyr

Government has blamed Telkom for high fixed line prices. ICASA has recently published a discussion paper on the unbundling of the local loop. For many, the discussion paper is "too little, too late"... (more)
McLean Sibanda

In conversation with McLean Sibanda

by Hans van de Groenendaal
     
The Innovation Hub is all about innovation. From the video conferencing rooms, to the auditorium and meeting rooms, it is all hi-tech. However, the look and feel of it is one thing, but delivering on innovation is much more... (more)
Internship - the skills development solution?
by Hans van de Groenendaal, EngineerIT

To create jobs South Africa needs skilled people to start their own business or make a meaningful contribution to the companies employing them - which all boils down to having a skilled workforce... (more)
Cinterion mid banner
Emerging entrepreneur: Collen Mashawana by Hans van de Groenendaal, EngineerIT 
 

In this new feature of EngineerIT we explore what it takes to be an emerging entrepreneur. We will interview young people, who are making a name for themselves in the business world. In this issue we meet Collen Mashawana, CEO of Khwinisa, and entrepreneur extraordinaire... (more)
Benefits of high-performance cloud computing for engineers  
by Dr. Renier Dreyer, CrunchYard and Prof. Barry Dwolatzky, JCSE at Wits University

Modern software applications running on powerful computing hardware have transformed the practice of engineering design. In years gone by difficult engineering problems would have been solved mathematically or by building complex physical test rigs and prototypes... (more)
Virtualisation: where do we stand in SA?
by Hans van de Groenendaal, EngineerIT
  
"Virtualisation may not be a silver bullet, but it is certainly a technology trend that has turned conventional architecture upside down." This is the view of many IT and virtualisation experts... (more)
Go native with native packet-optical transport 
Information from SAAB Grintek Technologies

Scaling to meet the Ethernet convergence wave: demand for network capacity has increased dramatically thanks to the popularity among both fixed and mobile subscribers, of video content, music downloads, multimedia-rich websites and the increasing adoption of Ethernet business services from enterprises... (more)
Billboards that house base stations and antennae
by Hans van de Groenendaal, EngineerIT

The face of the mobile industry is changing fast with higher data rates, more bandwidth and eco-friendly networks. This is placing constraints on the industry but works to the advantage of the late entrants in the mobile space such as 8.ta, powered by Telkom Mobile... (more)
A broadside analysis of BWA spectrum in South Africa
by Dumisa Ngwenya, Independent Communications Authority of SA

The government has found that the ICT sector makes only a limited contribution to the economy due to "dominance of monopoly suppliers, lack of competition and weak regulation". It has therefore launched a strategic objective dealing with "an efficient, competitive and responsive economic infrastructure network"... (more)
Improved switching with fast IGBTs create new challenges
by Stefan Schuler, Semikron, Germany
 
Fast switching power semiconductors are needed to reduce dynamic power losses which are challenging for application engineers, who strive to keep switching times as short as possible. But this is easier said than done... (more)
Fibre to the home - building the broadband community
Information from VH Fibre Optics

The principle of fibre to the home has long been recognised as the ultimate objective in enabling the provision of true triple play services to residential customers for many different types of telecom operators... (more)
Turning-up 40 G sub-marine networks
by Francis Audet and Mai Abou-Shaban, EXFO, Canada

From the planning to the deployment stage of an under-sea fibre optics cable, a lot of time, money and efforts are invested. Yet a point that is often neglected is the final acceptance test of the fibre... (more)
Overview of 100 G technologies
Information from  Protea Electronics

The International Telecommunications Union (ITU) defines optical transport network (OTN) as a set of optical network elements connected by optical fibre links, able to provide functionality of transport, multiplexing, switching, management, supervision and survivability of optical channels carrying client signals... (more)
Gadgets4Geeks  

A Bluetooth car kit with detachable colour display and the ability to play music; an LED lamp on a magnetic base; an eBook reader with internet access; a combination notebook lock with a 65 cm cable, and a gadget that will ensure that your cellphone is never be more than 5 m away... (more)
Why choose AC servo control over a pneumatic option?
Information from Omron

One of the main advantages of electromechanical AC servo control vs. a pneumatic solution is its flexibility and that it is a more energy-efficient solution... (more)
Thermal imaging revisited
by Hans van de Groenendaal, EngineerIT    

Although thermography has a long history, its use has only increased in recent years with its commercial and industrial applications now commonplace... (more)
Wireless datalogging - a case study
by Guy Snelling, Intercal

As part of their ISO 17025 accreditation process, the Council for Geoscience (CGS) were required to measure and log a large number of physical parameters in various laboratories throughout its multi-storey building in Pretoria... (more)
Telecoms developments in Africa
Compiled by Matthew White, Iona Press Services
  • World Bank advances $92-million for West African ICT 
  • Francophone Africa modernises spectrum management
  • Kenya to invest $60-million in backbone infrastructure
  • Seacom announces plans to connect three more states
  • Ethio Telecom seeks new vendor financing for expansion
  • LoneStar/MTN introduces WiMAX to Liberia
  • Vodacom-Mozambique slashes tariffs
  • Nigeria's latest attempt to privatise NITEL fails
  • Tanzania pledges to fight poverty with lower cost telecoms
  • Rural expansion set to drive sub-Saharan growth... (more)
Stimulus-response measurements
Information from Agilent Technologies

There are many test instruments capable of performing stimulus-response measurements, including a USB sensor-based scalar measurement setup, network analysers, and spectrum analysers with tracking generators... (more)
Fundamentals of silicon photonic devices
by B T Smith, D Feng, H Lei, D Zheng, J Fong and M Asghari, Kotura

This article offers a brief introduction to silicon photonics including the basic optical waveguide, passive optical circuit performance, the addition of doped p- and n-junctions adjacent to the intrinsic silicon waveguide to inject a current across the waveguide, free-carrier dispersion, performance of the variable optical attenuator (VOA), and a monolithic, dual-function splitter-VOA array circuit... (more)
Seven steps to analogue-to-digital signal conversion
by Reza Moghimi, Analog Devices

High precision applications require a well-designed low noise analogue front end to get the best SNR, which requires an informed approach to choosing an ADC to fully and accurately capture sensor signals. Support components such as driver op amps and references are selected to optimise overall circuit performance... (more)
Industry and institute news  
Radio amateurs' achievements recognised

The award for innovation in amateur radio was presented at the South African Amateur Radio Development Trust annual award ceremony held in Midrand... (more)
Space technology  

Product and company news

 

Software for oscilloscopes
Compact standard signal transmitter
Microcontrollers provide LED lighting functionality
Free PCB design software package with 3D viewer

High-speed digitiser
New 16-bit low-power microcontrollers
Extensive range of encoders in new short-form catalogue
Wire-to-board connector for power supplies
Development platform for next-generation designs
New series of "green" power supplies
Pyro-electric infrared sensors
New custom electromechanical assembly service
Next generation GPS chipset
Digital active power monitor

Extending uncapped benefits to hosted server
Transformer or transformerless UPS systems?
Lift-off technology in mechatronics invention
Driver for Fieldbus diagnostic module
Motion network servos with inbuilt safety
Easy configuration for fieldbus gateway
New range of Ethernet connectivity products
3D quality check for lids and caps
Manufacturing intelligence capabilities
Avionics suite receives FAA certification for business jet
Portable CAN-based measurement and logging systems
Surge protection for category 6 cabling
WLAN devices certified worldwide for Ex use
Visualisation portfolio upgrades
Repeatable solutions for OEM applications
Robust inductive sensors for demanding environments
High temperature thermal imagers
New AC/DC clamp meter with remote display
Full-metal pressure sensors for hygienic applications
Safe measurement of small quantities
Voice and data testing capability
Credit card-sized temperature recorder
Miniature linear displacement sensor
Terminal chamber provides simple and convenient connection option

Impact-driven asset management
Switches that can grow with your business
Projector built into a modular notebook bay
Tablet market could spur mobile data boom
Software to operationalise, measure and improve IT performance
Optimising physical infrastructure supporting virtualisation

Industrial Ethernet Infrastructure training seminar
Laptop for HD multimedia entertainment and everyday computing
SOHO UPS with small carbon footprint
Miniature fibre optic connector for radioactive environments
Modular SCM fibre optic networks
FTH network installations
New-generation UPS brings energy savings
Fibre channel analysis with network instruments observer
Enhanced features for digital signage public displays
New 3G GSM modules
UPSs for high-end servers
Bringing eight-connection mobile internet cloud to new platforms

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