March 2012 Newsletter
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Recent Posts:
Electromagnetic Compatibility Compliance Engineers Use These EMC Resources

UL1604 to Be Replaced by ANSI/ISA 12.12.01-2000 for Hazardous Locations Certification

Russia and Customs Union Postpone New Low Voltage Safety Regulations

EPA Announces Final Criteria for ENERGY STAR Most Efficient

Product Safety Compliance Engineers Use These Resources
Ask Pat:

Q1: We manufacture laboratory equipment that emits pulses of bright light used for measurement...

Q2: Does a keyboard or mouse require PAT test?

Q3: Is it possible to claim MIL-STD-810 compliance without passing accredited 3rd party testing?

Q:We manufacture laboratory equipment that emits pulses of bright light used for measurement, it's not meant to be viewed. In some cases the instruments contain small UV LED's (110mw input power, UVA / near visible wavelengths) to augment the spectral output. Since we're dealing with professionals, as opposed to untrained casual users, and the UV source seems 'trivial', is testing required for LED's as an optical hazard? If so which standard should apply? IEC61010-1 3rd edition still references IEC60825 only, and does not reference IEC62471 regarding non-coherent optical hazards. However, the site notes compliance to the LVD, for LED's has transitioned from IEC60825 to IEC62471 as of Sept. 1st 2011...
-Jeremy, Grand Rapids, MI

A: Regardless of intent of use, for product liability issues, it is best to design to enclose any UV source. You are correct, IEC62471 is in force and stipulates testing- especially in the UVA "actinic" range. In order for your product to be considered in the IEC62471 Exempt Group Classification (EGC), your product cannot pose any photobiological hazard, specifically:

  • An actinic UV (ES)- (200 - 400 nm) hazard within an 8 hour (30,000 s) exposure, nor;
  • A near UV (EUVA)-
    (315 - 400 nm) hazard within a 16 minute (1,000 s) exposure, nor;
  • A retinal thermal (LR)- (380 - 1400 nm) hazard within a 10 s exposure, nor;
  • An infrared radiation (700 - 900 nm) hazard within a 1,000 s exposure.
More than likely, your product would fall within the Risk Group 1("RG1") (Low-Risk) or Risk Group 2("RG2") where normal behavioral limitation, aversion response to bright light, or thermal discomfort reduce/eliminate exposure risk.

Q: Does a keyboard or mouse require PAT test?
-Rino, Sao Paulo, Brazil

A: Portable appliance testing (commonly known as PAT or PAT Inspection or PAT Testing) is a process in the United Kingdom, New Zealand and Australia by which electrical appliances are routinely checked for safety. Neither the act nor their corresponding regulations detail PAT inspection as an obligation, but rather state a requirement of maintenance of safety and evidence of routine maintenance of all hand-held, portable and plug-in equipment.

This answer should apply to most PC-powered or battery-powered computer accessories, and not just to keyboards and mice.
The need for safety certification in the case of keyboards and mice is usually driven by the industry, often the retailers. It does not seem to matter if they are USB, PS/2, battery or similar-powered. If you are a manufacturer it might be necessary to have such a product certified if that is what your competition is doing. Otherwise there is nothing in workplace regulations or in the product safety standard that specifically requires keyboards or mice to be certified. On the other hand there is nothing that specifically excludes them either.

Q: Is it possible to claim MIL-STD-810 compliance without passing accredited 3rd party testing? I have noticed alot of "ruggedized" consumer products claiming such compliance.
-Joel, Knoxville, TN

A: Suppliers can and some do take significant latitude with how they test their products, as well as how they report the test results. As a result, claims of "compliance with MIL-STD-810" can be misleading. Sometimes a product is merely designed/engineered/
built-to comply with the standard. A good way to verify that some testing was actually performed is to see if documentation indicates:

  • against which methods of the standard the compliance is claimed
  • to which parameter limits were actually tested; and
  • whether the testing was done internally or externally by an independent testing facility.

Hearing from our customers is a very important and necessary component to improving our service. Please feel free to pass on your comments, good and bad, by emailing us at

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In this issue:

RTCA/DO-160 Section 22 Lightning Testing

MET is performing testing to all levels prescribed in RTCA/DO-160 Lightning Induced Transient Susceptibility. It is important to note that parts or all of DO-160 Section 22 will be incorporated in the next revision (Rev G) of MIL STD 461 tentatively planned to start in 2012 and to be released in 2013/14.

More about Lightning Induced Transient Susceptibility Testing.

MET's Over-The-Air (OTA) Performance Testing

MET's OTA performance testing of wireless devices involves determination of transmit and receive characteristics under controlled conditions.

MET provides this testing service in a CTIA approved fully anechoic chamber to ensure that only signals to / from the device are measured.
More about MET's Over-The-Air Performance Testing Services.

PV Flash Testing Now at MET

MET is a leading photovoltaic test lab, with a dedicated PV flame test facility. Some of our new and existing capabilities:
  • UL1703 safety testing
  • IEC 61215/61646 for PV and thin-film PV modules
  • IEC 62108 for CPV modules
  • IEC 61730-2 safety qualification

Flash Testing to UL 1703

MET's installation of the Ecoprogetti Sun simulator Ecosun 10L (pictured above) enables a supply of radiation in triple class A, which is fully in-line with EN60904-09 specifications.

Learn more about MET's PV testing.

First Medical Device Completes RFID Susceptibility Testing

MET has completed testing on the first product to be submitted to the Medical Device RFID Susceptibility Program. The Program – co-developed by MET Labs and the U.S. FDA under the auspices of AIM Healthcare Initiative (HCI) – is designed to determine potential adverse events of radio frequency identification (RFID) emissions on electronic medical devices.
Interested medical device manufactures are still eligible for participation in the program.

More about MET's RFID Test and Certification Services

EMC Site Surveys Provide Answers
Increasingly, facilities are requesting RF audits after installing new sophisticated electronic equipment to assure either its performance will not be impacted by its electromagnetic environment or its installation has no negative impact on existing equipment or infrastructure communications.

Schedule an EMC site survey.

MET Performs Vehicle Awareness Devices Testing

Watch the video
MET Labs, in partnership with OmniAir Consortium and others performed a two week long Qualification test session on DSRC Vehicle Awareness Devices in February, 2012. Based on the results from this testing, US DoT will place devices that qualify on a Qualified Product List (QPL).

California Recognizes MET for NRTL Certifications of Other Solar Electric Generating Technologies

MET is cited as an approved NRTL in the California government Listing Procedures for "other solar electric generating technologies"- OSEGTs.
The requirement for OSEGT eligibility is a full safety certification with follow‐up service or listing by a NRTL. Simply providing recognition, evaluation, or test results will not be accepted.

More about MET's Product Safety Certification Services

Upcoming Seminar/Webinars
March 20   GR-1089-CORE Issue 6 Update for NEBS Webinar
March 28   ESD Design and Testing Seminar
Santa Clara, CA
April 10   International EMC Product Approvals Webinar
April 17   Overview of 60601-1 3rd Edition Webinar
April 26   NEBS Testing Seminar
Santa Clara, CA
May 17   Medical Device Regulatory Compliance Seminar
Austin, TX
May 31   MIL-STD Testing Seminar
Baltimore, MD
June 14   MIL-STD Testing Seminar
Santa Clara, CA
June 19   Lightning Testing for RTCA/DO-160, MIL-STD 461 & MIL-STD-464 Webinar
July 17   Hazardous Location Product Safety Testing Seminar
Houston, TX
Bookmark our Seminars/Webinars webpage to learn of yet to be scheduled events.

Meet With Us at These Upcoming Trade Shows

ICPHSO Product Safety Annual Meeting (completed)
Feb 28 -March 2
Orlando, FL
See Meeting Posts for Day 1, Day 2, & Day 3

AEA International Convention
April 4-6
Gaylord National Hotel & Convention Center
Washington, DC
Booth #829

Hong Kong Electronics Fair (Spring Edition)
April 13-16
Hong Kong Convention Center
Booth #3CON-109

SPIE, Defense, Security & Sensing
April 24-26
Baltimore Convention Center
Baltimore, MD
Booth #552

CTIA Wireless
May 8- 10,
Ernest Morial Convention Center
New Orleans, LA
Booth #4819

If you would like to meet with us at this event email us in advance to set up a day and time.

Email us your questions about any of MET's services and capabilities at

914 W. Patapsco Ave. , Baltimore, MD 21230
East Coast: 410.354.3300
West Coast: 510.489.6300
Central: 512.287.2500
Korea: +82(0)2 6007-2188
China: + 86 755 8291 1867
Taiwan +886 2 8227 8887

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