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MET Laboratories performs Radiated Emissions Testing (above 1GHz) to the new requirements of EN55022:2006+A1:2007 (Information Technology Equipment- Radio Disturbance Characteristics- Limits and Methods of Measurement). |
Previous versions of EN55022 did not require radiated emission testing above 1GHz. This new version of EN55022 specifies REE testing up to 6 GHz. Test methodology is also significantly different from FCC/ANSI C63.4 requirements. The new version requires testing to be done using a validated test site (chamber) according to CISPR 16-1-4.
The standard specifies that the testing is performed using a test site with reflection free conditions (i.e. free space method). A regular semi-anechoic chamber does not provide a reflection free environment due to the metallic ground floor. In order to achieve free space conditions in a semi-anechoic chamber it becomes necessary to place absorbing material on the chamber floor between the EUT and the measuring antenna as shown in the set-up picture above.
Learn more about MET's EN55022:2006+A1:2007 testing capabilities.
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MET Labs EMC Labs capabilities greatly enhanced with recent 30,000 watt 3-phase programmable power supply
MET labs recent acquisition will allow clients to custom program any wave form, a valuable tool during a product's design phase. This power supply is ideally suited for:
- MIL-STD 704 (A-F Revision) all DC,single phase AC, three phase AC power input product testing
- RTCA DO-16 (A-F Revision) Section 16 - all DC, single phase AC, three phase AC power input product testing
- Airbus 0100.1.8 D/E - all DC, single phase AC, three phase AC power input product testing
- IEC 61000-4-14 Voltage Fluctuations
- IEC 61000-4-17 DC Ripple
- IEC 61000-4-27 Voltage and Phase Unbalance
- IEC 61000-4-28 Frequency Variations
- IEC 61000-4-29 DC Dips, Interrupt and Variations
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More on MET's MIL-STD testing services. |
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MET will house SNIA for informal meeting
SNIA is hosting its Q4 Green technical meeting in downtown
Baltimore, in November.
SNIA will meet and tour MET Labs Baltimore facility
to learn more about what is done at MET Labs for the EPA EnergyStar
program, and discuss the merits of a project to test a storage system, so as to understand
the effects of temperature, humidity, and altitude on energy
efficiency. Learn more about our green testing services. |
Verizon to require thermal modeling when designing circuit boards and cabinets used in network gear.
In an Oct. 27, 2009 press release out of Baltimore, MD, Verizon announced it will be targeting heat generated by computer chips and circuit boards in its latest push for network power efficiency. Minimizing heat generation will improve equipment performance and reduce the need for costly air conditioning in central offices, equipment vaults and other facilities. Chuck Graff, Verizon director of corporate network and technology stated..."Starting in July, 2010, equipment makers will be required to submit results of thermal modeling applied to their hardware that show they have optimized their circuits to generate less heat and perform more efficiently." MET is a Verizon certified ITL - independent testing laboratory.
Learn more about MET's NEBS testing services - full testing, under one roof.
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In this Issue:
HALT Alternative Energy
New CISPRA reflection free
Program your own wave form
SNIA visits MET
New Verizon Thermal Push
Ask an Expert
Q: For humidity testing to MIL-STD 810 which type of equipment classification has the most stringent testing requirements, operational or non-operational?
A: Equipment that is operational is assumed to be in a location suitable for operation and personnel to operate it, and is therefore thought to be less extreme. Non-operational equipment, in contrast, is assumed to be equipment that can be kept in storage. So, non-operational equipment will be exposed to exaggerated profiles to simulate a longer storage period for a shorter test run. Note: 810G, unlike 810F, has multiple equipment profiles, not identical to 810E, but similar in approach and reasoning.
Also, it’s not commonly known that most Military standards can be downloaded, at no cost, from the ASSIST database.
Q: What can I do to prepare for a product safety certification process?
A: After MET is awarded a project, MET’s Project Coordinators provide our clients with a customized submittal checklist. Generally speaking, you should be prepared to provide a general block diagram, a complete components list, a product sample, and anything else identified in the original quotation. It would be advisable to provide specification sheets for all components located in high voltage (greater than 42.4 VAC or 60 VDC) circuits. as well as flame ratings of all polymeric materials. There should be a quality assurance system in place at the manufacturing location to ensure continued compliance of the product with the standard. It is always recommended that you purchase the standard(s) specified in the quotation.
Submit your questions via email to askanexpert@metlabs.com.
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 info@metlabs.com.
Follow us at: http://twitter.com/metlabs.
For a fast quote:
Call us at:
800.638.6057
or request a quote on-line.
MET Labs wishes you a warm and safe fall and a Happy Thanksgiving.
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