Global Product Certification since 1992

Advantages of Fiber Optic and Immunity to Electromagnetic Interference

advantages of fibre optic

Fiber optics are thin flexible glass wires (or, other transparent solids) used primarily in the telecommunications industry. Fiber optical wiring simplifies data communication.

In this article, we will explain the advantages of fiber optics and how they are immune to electromagnetic interferences, making it the ideal choice for signal/data transmission. Let us begin.

#1 Electromagnetic Interference Immunity

Electromagnetic Interference (EMI) is a common property of electromagnetism where electrical current is generated along magnetic fields as they move across conductors, which modifies the current flow. The interference happens with coaxial cables but not with fiber optic cables as the signal transmission occurs through light, and not current.

It opens the potential of fiber optic cable installation in places where EMI can block signal transmission. Fiber optics are ideal for data transmission between computers.

#2 Non-Conductive Design

Fiber optic cables are often non-conductive in nature as they do not contain metals. Such cables are ideal for indoor installation, and they are economical. The same for outdoor installation is expensive as they are created with enhanced wire strength to handle environmental hazards such as lighting. A workaround on this is to install protective devices around the cables to avoid electrical surges and eliminate ground loops.

The problem with metal cables is they become a good conductor of electricity. This can create signal transmission problems even with a subtle electrical power variation. The metal wires are created assuming that the ground has a uniform potential; however, in a realistic situation, the ground voltage potential differs when cables of different potential run between the same building or different buildings.

#3 Data Security

Optical fibers do not have an external magnetic field as the electromagnetic field is contained within the fiber. Without cutting the fiber, tapping the signal transfer is impossible. The signal transfer cannot be intercepted, and therefore, fiber optics are a secure way to transfer sensitive data and maintain data protection.

In comparison, metal cables contain magnetic fields and it is easier to tap into the signal transmission and leak data. The problem can be contained by shielding the wire, but shielding is not enough.

#4 Electrical Sparks

Usually, electrical points create sparks, and it becomes extremely dangerous to transmit signals in that situation, especially when the spark occurs in areas which have oil refineries and chemical plants as the air contains explosive vapours.

A small spark could lead to a huge explosion. Installing fiber optics makes sense as current do not pass through the cables, removing the potential of any explosion or other mishaps through electrical sparks.

#5 Bandwidth Potential

The capacity to transfer data at high speed over long distance is high with fiber optic cables. The cables do not possess an infinite bandwidth though. However, compared to coaxial cables, the bandwidth is higher.

The coaxial cables cover few MHz/km as bandwidth parameter which is less than the 400 MHz/km parameter of fiber optic cables. Do note these MHz/km are estimations and will vary with every cable.

#6 Installation

Wire cables with increased communication transmission capability are thicker and rigid, toughening up the process of installing them in buildings where special ducts must be created to install the wires.

Comparatively, the fiber optic cables are simpler to install because the wires are flexible and smaller. They can be installed along existing electric cables, and they will not pick up electromagnetic noise from other wires.

All buildings have ventilation ducts. It is easier to install the cables through the ventilation ducts, and as fiber optics are smaller, they need less space and less fire-retardant materials. Fiber optics are lightweight, making them ideal for portable installations.


All the above discussed factors make fiber optic cables a preferred choice for data communications. Added to a well-structured wire network, the optic cables can connect to multiple terminals even beyond its usual connectivity range.

At EMC Tech, we provide a range of EMC testing & product certification services across Australia. We are NATA accredited for RCM, FCC, CE and IC Testing

Wireless Certification – Why use EMC Technologies?

emc technologies

In operations since 1992, EMC Technologies is a privately-owned Australian company in the wireless testing and certification space, and it operates both in New Zealand and Australia. Accredited with EMI, EMC and EMR facilities, the company offers testing, certifications, and specialist approval to telecommunications, electrical and electronics industry.

The company invests in the state-of-the-art infrastructure and training, and maintain active memberships with various other certification associations globally.

EMC Technologies:

  • is an FCC accredited testing lab with the AU0001 (Melbourne) and AU0002 (Sydney) designation number
  • is a member of the FCC Testing and Certification Bodies (TCB) Council, and we attend their biannual conference-cum-workshops to remain up-to-date with the developments in Canada and the USA
  • is a member of the European Radio Equipment Director (RED) Compliance Association
  • is a member of the European Radio and Telecommunications Terminal Equipment (R&TTE) Compliance Association
  • is a notified body under the EU EMC Directive 2014/30/EU

Wireless certification is a complicated process and decades of experience has made us the leader in the wireless certification market. We maintain a 95% market share. The extensive experience is at the disposal of our clients who want to enter a large overseas market and needs the accurate certifications.

EMC Technologies Services

#1 Radio Wireless Testing

EMC specialises in Low Interference Potential Devices testing, LIPD testing, and ACMA Short Range Devices 2014 testing. Approvals and certification services are offered globally such as Australian RCM, Canada FCC and ISED, Japan MIC, European CE Marketing and New Zealand GURL. There are 18 standard testing benchmarks. An overview of the services would include Bluetooth certification, ZigBee certification, Wi-Fi certification, short range radio transmitter and transceiver certification and LIPD certification.

#2 EMC Testing

The EMC testing services cover the automotive, medical, railway and rolling stock, military and aerospace, commercial and consumer industries, offering the necessary EMC testing services for the major international markets – CCC (China), VCCI (Japan), ISED (Canada), FCC (North America), CE (Europe) and RCM (Australia and New Zealand).

EMC Technologies also operate in the emerging markets of South America, Russia, South Africa, South Korea, Singapore, Hong Kong, Taiwan, and Indonesia. The company adheres and complies with all regulation protocols.

#3 Safety Testing

EMC Technologies maintains compliance with all safety and security directives. We have our safety testing facility in Sydney, and it is NATA accredited. There are 16 common standards for which we provide safety testing NATA report. We employ experienced engineer to identify product safety deficiencies regarding product design, features, and components.

#4 EMR Testing

Since 1992, EMC Technologies is the most accredited and Australia’s largest company to measure electromagnetic fields, and we specialise in EMR surveys, RCM EMR testing, EMF measurements, ACMA EMR approval, EME expertise and maintains compliance with EMR Australia.

Our reports are globally accepted as we are NATA accredited for EMI/EMC/EMR/SAR & Safety Testing. We follow the major CISPR, AS/NZS, EN, ETSI standards and offer SAR Testing as the only lab in Australia and New Zealand. It is recognised by the Testing Authority (RTA) for ACMA telecoms compliance,

The telecommunications market is an exploding field, with unimaginable technological advancements. We have highly trained engineers and supporting staff working with clients for wireless certifications.

Understanding RCM Testing for Electronic Products & Equipment

The Regulatory Compliance Mark (RCM) is a compliance system applicable to suppliers and manufacturers in New Zealand and Australia, and includes the telecom, electromagnetic radiation (EMR), EMC, radiocoms, and all electrical equipment industries to comply with revised testing and certification requirements. In short, all electronic and electrical equipment are covered under the RCM testing process.

A notable change, as part of the revised RCM system, is a regulated phasing out of the A-tick and C-tick marks and the Australian Communications and Media Authority (ACMA) Suppliers Number. The transition process to replace the A-tick and C-tick marks began on 1 March 2013 and became mandatory on 1 March 2016.

The RCM system encompasses approvals, meeting set standards, testing and test reports, compliances, and adhering to the Declarations of Compliance. The RCM system gives importers and manufacturers from Australia and New Zealand the authority to sign the Supplier Declaration of Conformity. Importers and manufacturer outside these two countries do not have the authority to place RCM logo on the product or sign the Supplier Declaration of Conformity mandate.

Australian importers and manufacturers are responsible for supplier registration, RCM logo labelling on equipment, electrical safety, and other compliance maintenance. Few electrical equipment categories require a tougher level of testing and conformity. The ACMA, Electrical Regulatory Authority Council (ERAC), and Radio Spectrum Management (RSM) databases are involved in the creation of the RCM system.

The Electrical Equipment Safety System (EESS) mandated the applicability of RCM testing process on all in-scope equipment and created a unified electrical safety approval system to measure compliance level of suppliers and manufacturers. Due to the new compliance system, it becomes mandatory for all Australian suppliers, importers, and manufacturers to register themselves and their products on the EESS database.

ACMA Compliance

Anyone using the RCM testing process needs to register as ACMA Responsible Supplier at the ERAC website. The council is the head of electrical safety regulation. Post the registration process, avail the relevant test reports in tune with the ACMA standards. Here are some product testing guidelines in brief:

  • Products containing wireless transmitters such as radios, Wi-Fi, and Bluetooth needs to comply with ACMA (EMR) and ACMA Radiocommunications (Radcom) standards.
  • Products without wireless function should have a basic EMC test report based on the ACMA list of testing protocols.
  • Products with a connection to satellite telecom network, mobile phone network or the Public Switched Telephone Network (PSTN) needs to comply with the 2015 Telecommunications Labelling Notice (TLN).

Suppliers, manufacturers, and importers unsure about the testing processes and guidelines should contact an ACMA accredited centre for clarification.

EESS Compliance

Mains powered products come under EESS classification, under Compliance Level 1 grade. While registration is not mandatory, compliance is necessary under various federal and state laws. Products under Compliance Level 3 are high-risk (AC adapters, domestic appliance, and others) and must be registered by the Supplier with the ERAC national database. The relevant accredited certification body needs to issue a Certificate of Conformity.

Imported Compliance Level 3 products require a separate Importer registration, not under Responsible Supplier category. The Importer must be based in Australia or New Zealand, and such a person is wholly responsible for safety testing and compliance. The importer cannot delegate the responsibility to a local Australian representative; however, an authorised consultant in Australia or New Zealand can handle the registration process in lieu of the overseas importer.

Compliance Exemptions

The ACMA EMC Labelling Notice lists the products exempted from RCM testing and compliance process. A file containing the details of the exempted product and the reason for exemption needs to be kept handy for random ACMA audit. The file should have a detailed product description, test reports, and the signed Declaration of Conformity (DoC) for review.


The RCM unified the complete testing and approval process. It is a consolidated effort to identify products along the ACMA and EESS guidelines.

At EMC Tech, we provide a range of EMC testing & product certification services across Australia. We are NATA accredited for RCM, FCC, CE and IC Testing

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Risks from Counterfeit Phone Chargers

If you bought a mobile phone charger from a vendor other than a trusted third party dealer, the official Apple website or an android smartphone company, then you might have a counterfeit charger.

Risks from Counterfeit Phone Chargers - EMC Tech

Fake chargers at discount rates have become widespread on various, popular online stores including eBay and Amazon. What’s worrisome is that 90% of Apple chargers and cables on Amazon were found to be fake a report on the Telegraph in October, 2016 said.

One reason counterfeit products have been popular is that they are cheaper. But executives at UK’s Chartered Trading Standards Institute said, counterfeit goods could “cost you, your home or even your life, or the life of a loved-one.”

Dangers posed by the bogus products

According to Apple Inc., counterfeit chargers may overheat of the chargers, cause electric shocks and even catch fire.

These risks were affirmed by the London Fire Brigade. They once put out fire from a burning house in Tottenham after an imitation iPhone charger caught fire while in use.

They have since released a report warning of the dangers of counterfeit iPhone chargers.

In addition, the LFB determined that fake chargers were subject to damage and could damage your phone. They could also cause burns or even house fires though electrocution.

Counterfeit plugs or non-sleeved cables and plugs whose metal pins remain exposed are on fake chargers. They may also have live parts, only basic insulation and sometimes two pin plugs attached.

Non-sleeved plugs and cables - EMC Tech

Non-sleeved plugs and cables expose the user to the risk of electric shocks which could cause injuries and even death.

The cables also tend to be of poor quality and easily get damaged.

Measures against counterfeits

Safety campaigners in the UK are working with search engines to crackdown online sellers of fake chargers. Illegitimate social media profiles who were  selling suspicious items online had been removed.

But the consumer remains the most important player in this. You must be vigilant when purchasing electrical products on the internet.

How to spot a counterfeit phone charger?

Authentic Android chargers have the logo of their respective phone company.

Apple’s iPhone charger on the other hand has two parts – a power adapter and a lightning cable. This item may cost about 24 US dollars or north of that from the official Apple Store.

It’s perhaps because of this high price that some consumers are tempted to consider low cost options. Here’s how you can spot a real charger from a fake one.

  1. Weight of the product

genuine iPhone charger - EMC Tech

A genuine iPhone charger will be a bit heavier than its fake cousins, because it has more components. The wall adapter should weigh at least 40g.

  1. Safety mark

The genuine charger has a safety mark on its underside right between the two bottom pins you plug on the wall socket.

safety mark on the charger - EMC Tech

This mark can easily be forged, but there is still a difference: the text on imitations are dark grey as opposed to the light grey on real iPhone chargers.

Also check the CE safety marking, the brand name of the manufacturer, Apple logo, batch number as well as the model number.

  1. User manual

The genuine iPhone charger comes with various essential instructions.


These include information on electrical safety and directions on how to safely use the charger safely. If any of these are missing, then you may be dealing with a fake.

  1. The finish

Look at the pins on the wall adapter. A legitimate charger should have a matt finish, with a consistent colour and a uniform square appearance.

pins on the iPhone wall adapter - EMC Tech

A gloss or shiny finish, and/or irregularities in the size or shape are possible signs of a counterfeit product.

  1. Compliance testing (EMC and Electrical Safety)

When everything else fails to detect a fake charger, there is one accurate way to tell if your charger is not just fake but also dangerous: compliance testing.

In Australia, companies such as EMC Technologies can provide EMC and electrical safety testing services for you on a diverse range of electrical and electronics products including iPhone chargers.

With electrical safety testing and certification from a NATA accredited company such as EMC Technologies, you can rest assured that the product you are using will not only offer value for money but will also be safe to use.



CE Marking RED Directive is coming…

The transition period from the old R&TTE (Radio and Telecommunications Terminal Equipment) Directive to the new RED (Radio Equipment Directive) has almost expired. From June 13 2017 your equipment MUST comply with the new directive and applicable harmonised standards. The problem is that the RED has not yet been fully populated with harmonised standards.

Only 1 month to go! What do you do? Who do you call?

EMC Technologies is a member of various global industry groups including the RED Compliance Association. We will give you the best, expert advice. Please contact us.

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Wireless Certification – Why use EMC Technologies?

EMC Technologies is the most experienced wireless testing and  certification company in Australia and New Zealand. We maintain our expertise by investing in state-of-the-art equipment, training, and with membership of key overseas certification associations involved in testing, certification and approvals.

  • Member of FCC Testing and Certification Bodies (TCB)  Council and attends the training  workshops held by the FCC  twice a year.  This ensures that we are up to date in the latest developments in the USA and Canada.
  • Member of the UK EMC Test Labs Association.
  • Member of the former European Radio and Telecommunications Terminal Equipment (R&TTE) Compliance  Association.
  • Member of the European Radio Equipment Directive (RED) Association.
  • We regularly attend international workshops and conferences in USA, Canada, Japan, Europe

EMC Technologies investment in this field has given it 95% of the wireless certification market. Utilising our experience, up to date training  and resources is you best insurance for a delay-free entry into the large overseas markets. Certification of wireless products is a complex process so why risk the success of your product with a less experienced company.

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New EMC Technologies team member, Dr Arun Gayen

EMC Technologies is pleased to announce that Dr Arun Gayen has joined our team as our new Melbourne Safety Laboratory Manager.

Arun has many years of experience working in the compliance industry (formerly with TUV Rheinland Group in Japan and Australia) with a focus on Electrical Product Safety and EMI/EMC. He also brings a wealth of international experience in EMC Design and Consultancy from his previous experiences (PACE-United Kingdom, TATA ELXSI and Flextronics Design in India) plus local knowledge from his time at TUV Australia. Arun has a strong customer service approach.

For any electrical safety enquiries, please contact him on 03 9365 1000 or send a message via the contact form on our website.

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NATA accredited Harmonics and Flicker calibration services

An Australian First

 NATA accredited testing to EN/IEC 61000-3-2 and 61000-3-3 (Harmonics and Flicker) and NATA accredited calibration of Harmonics and Flicker test systems

EMC Technologies is pleased to announce that they can now provide NATA accredited testing to Power Quality standards EN/IEC 61000-3-2 and EN/IEC 61000-3-3 including the AS/NZS equivalents.

EMC Technologies can now also provide the internationally accepted ISO 17025 NATA accreditation for the calibration of Harmonics and Flicker (H&F) compliance test systems used to measure H&F in per IEC/EN/AS/NZS 61000-3-2 and 61000-3-3. Accredited calibration of H&F test systems was only previously possible in overseas calibration labs. Shipping of these large and heavy H&F test systems is expensive and fraught with risk. This has always been a major problem for Australian test labs wishing to obtain NATA accreditation for testing to H&F standards. There have also been major inconsistencies in the interpretation of the calibration procedures. Many calibration labs ignored the Power Source of the H&F test system and it was excluded from the calibration. Two new standards (IEC Technical Reports) have been published to standardize the calibration methods;

IEC TR 61000-4-37:2016 Calibration and verification protocol for harmonic emission compliance test systems

IEC TR 61000-4-38:2015 Test, verification and calibration protocol for voltage fluctuation and flicker test systems.

EMC Technologies has the only NATA accredited H&F calibration service in Australia/New Zealand, and is one of the few in the world that meet the new calibration requirements.

Both calibration and testing are also conveniently available on site at customer’s premises.

Compliance with Harmonics and Flicker standards is mandatory for CE Marking and for certification of energy savings products under various energy regulator schemes in Australia and overseas.

For more information on the full range of EMC calibrations contact us using the contact page or go to

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EMC Technologies can arrange worldwide certification of your Radio communications and Telecommunications products. Common services include ACMA certification (Australian RCM), FCC (United Stated of America) and IC (Canada) certification.

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We can provide convenient NATA accredited calibration services for EMR probes, ESD generators, antennas, LISN’s, CDN’s, EFT and Surge generators and more. We can also calibrate various other RF equipment and provide verification services.

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