Verizon’s annual NEBS meeting in Baltimore, Maryland with ITL Labs was last week, and MET Labs’ NEBS guru Troy Franklin was there. Following are highlights from his notes.
NEBS Personnel Changes
Verizon NEBS Program Head Howard Davis has exited the NEBS group, assuming leadership of Verizon’s Optical Systems Testing team in Baltimore.
Andy Marquis, from Verizon’s Waltham, Massachusetts office, is now heading the NEBS group.
Todd Talbot will continue to lead the NEBS Conference, which is October 23-24 in Las Vegas.
Product Field Failures
Verizon has been stung by NEBS product field failures, due to occasional insufficient manufacturer documentation of engineering change notices (ECNs) and product change notifications (PCNs). Going forward, Verizon will scrutinize test reports for proper documentation of product or component changes.
Data Center Requirements/GR-3160-CORE
Telcordia is inviting vendors and labs to participate in the rewrite of GR-3160-CORE: NEBS Requirements for Telecommunications Data Center Equipment and Spaces. The participation fee is $7,000.
Unresolved is whether a data center should be treated the same as a central office, or whether data center equipment should be subjected to less-than-full NEBS requirements.
GR-63-CORE Issue 4 Acceptance
Verizon now accepts the GR-63-CORE Issue 4 testing, as detailed in this previous post. Issue 4 report templates will be available June 25. GR-63-CORE Issue 3 testing will no longer be accepted after October 31, 2012.
Verizon is seeking to trim the NEBS template to simplify the reporting, and has asked ITLs to assist in devising a new format.
Energy efficiency is a priority for Verizon due to its direct effect on revenue.
Verizon has adopted the ATIS series documents for energy efficiency testing.
For the TEEER program, Verizon is considering allowing testing at the vendor’s facility due to the high cost of transporting large-scale systems to the test lab.
Verizon is working on a revision to the lead-free test requirements of VZ.TPR.9307 to make it less cumbersome and expensive.
The salt fog requirement of VZ.TPR.9307 for central office equipment is no longer applicable.
Verizon is working on a new TPR for wireless devices to be used in the central office, to test immunity of intentional radiators.
Verizon is seeing interference issues with DVRs, routers, and set -top boxes when they are being operated next to wireless devices, like cell phones and Wi-Fi equipment.
Verizon ITL Member Change
Garwood Laboratories is no longer a part of the Verizon ITL program.
Register for a complimentary MET Labs NEBS Testing Seminar in Dallas in October.
Involved in NEBS EMC compliance? Contact us for a free “Cheat Sheet” that details the updates in GR-1089-CORE Issue 6.
For NEBS Certification pricing and lead time, visit our Quote Center to fill out a RFQ or to have someone contact you.
In follow up to our post on product safety web links, here are the Internet resources we use to keep current with electromagnetic compatibility (EMC) regulations and industry happenings.
What are we missing? Leave a comment with a link to it.
STANDARDS & REGULATORY
FCC OET Federal Communications Commission Office of Engineering and Technology for compliance with Title 47 of the Code of Federal Regulations.
U.S. Military Standards The Department of Defense Single Stock Point for Military Specifications, Standards and Related Publications (DODSSP) is the official source of DoD specifications and standards.
FDA Electromagnetic Compatibility U.S. Food and Drug Administration standards and regulations for radiation-emitting medical products.
ANSI American National Standards Institute is the voice of the U.S. standards and conformity assessment system.
Verizon NEBS The telecom leader in Network Equipment Building Systems requirements.
Industry Canada Oversees Radio, Spectrum and Telecommunications regulations for Canada.
Health Canada Electromedical Standards Canada’s version of FDA.
CENELEC The European Committee for Electrotechnical Standardization. It creates voluntary European electrotechnical standards (ENs).
UK Defence Standardization UK Defence Standards – registration required.
NPL Electromagnetics UK National Physical Laboratory Electromagnetics division.
GOST Russia Federal Agency on Technical Regulating and Metrology.
AFNOR French National Standards Institute.
AENOR Spanish National Standards Institute.
SFS Finnish Standards Association.
CNCA Regulations of the People’s Republic of China on Certification and Accreditation and Applying China Compulsory Certification (CCC) Mark.
RRA National Radio Research Agency, Korea’s regulatory agency for KC Mark.
BSMI Bureau of Standards, Metrology & Inspection is the authority responsible for standardization, metrology and product inspection in Taiwan.
VCCI Council Japanese EMC regulation and certification.
ACMA Australia EMC Compliance and Labeling.
New Zealand Ministry of Economic Development Radio Spectrum Division.
CB Scheme The international certification program managed by the IECEE, with over 60 countries participating.
IEC CISPR The International Electrotechnical Commission International Special Committee on Radio Interference.
Ecma EMC & EMF Ecma International is dedicated to the standardization of Information and Communication Technology (ICT) and Consumer Electronics (CE).
ISO International Organization for Standardization is the world’s largest developer and publisher of International Standards.
IEEE-SA IEEE Standards Association.
SAE International Standards for aerospace, automotive, and commercial vehicles.
ETSI The European Telecommunications Standards Institute (ETSI) produces global standards for Information and Communications Technologies (ICT).
RTCA SC-135 Produces the international de facto standard (RTCA/DO-160) for environmental testing of commercial avionics.
ITU International Telecommunication Union is the United Nations specialized agency for Information and Communication Technologies (ICT).
NIST Directory of Electromagnetic Compatibility & Telecommunications Laboratories
IHS Standards Has a wide variety of standards available for purchase.
EU Directives Includes link to harmonized standards references.
PUBLISHERS: MAGAZINES & BLOGS
Interference Technology Trade publication dedicated to EMC/EMI issues.
EMC Journal UK-based bimonthly publication.
IN Compliance Magazine Covers EMC along with other compliance disciplines.
Evaluation Engineering Magazine includes coverage of environmental simulation and EMI.
Test & Measurement World Covers EMC occasionally.
Electromagnetic News Report U.S.-based bimonthly publication.
Certification & Test Blog Information, from TRaC Global, on testing and certification services, ranging from telecoms & radio and environmental, through to analysis, safety and EMC.
Directive Decoder Blog Analysis of European legislation.
NEMA Currents Blog From the Association of Electrical and Medical Imaging Equipment Manufacturers.
IEEE EMC Society The world’s largest organization dedicated to the development and distribution of information, tools and techniques for reducing electromagnetic interference.
Electrostatic Discharge Association A professional voluntary association dedicated to advancing the theory and practice of electrostatic discharge (ESD) avoidance.
Electrostatics Society of America A nonprofit professional society devoted to the advancement and improved understanding of electrostatics.
EMCIA The Electromagnetic Compatibility Industry Association is a UK association for companies and organizations which have a vested interest in EMC and associated European directives.
EMC Test Labs Association UK group that works to ensure a commonality of approach to EMC testing.
EMC Society of Australia A technical society of the Institution of Engineers Australia. The Society operates to promote the science and practice of electromagnetic compatibility in Australia.
PSES Email Forum Listserv made up of about 700 product safety and EMC engineers and technicians. Sponsored by IEEE.
Testing Equipment Suppliers Published by IECEE.
iNARTE Certifies qualified engineers and technicians in the fields of Telecommunications, EMC/EMI, Product Safety, ESD and Wireless Systems Installation.
What are your favorite online EMC/EMI compliance resources? Please leave a comment with a link to it.
Need testing? Get EMC testing cost and lead time here.
Now that Verizon has accepted GR-1089-CORE Issue 6 with exceptions, MET Labs’ Electromagnetic Compatibility (EMC) Department has issued a guidance document that details the variances from Issue 5. See highlights, following.
(Want a handy cheat sheet that details what can and cannot be grandfathered from Issue 5? Contact MET and ask for the “Issue 6 Cheat Sheet.”)
The following tests were removed as part of the revision:
- Conducted Emission Requirements for Analog Voiceband Leads
- Equipment Providing or Receiving Remote Power O4-3 and O4-4
- First Level AC Power Fault – 600V 2.2A, 600V 3A and 1000V 5A Test
- Second Level AC Power Fault – 600V 2.2A and 600V 60A Test
- Criteria for Equipment Interfacing With Coaxial Cable Port
- Voltage Cutoff and Recovery Criteria
- Singe Voltage Transient
- Voice Frequency Noise Emission
- Broadband Noise Emission
The following changes were made in Sections 2-3:
- Radiated emissions e-field (REE) and radiated emissions magnetic field (REH) below 30MHz have been removed
- Not applicable to wireless devices with the antennas inside the facility
- Guidelines for changes, GR 209
- Electrostatic discharge (ESD) warning label is always required
- Electrical fast transient (EFT) method clarified for racks with cables located on top
- ANSI C63.4 – 2009 referenced – American National Standard for Methods of Measurement of Radio-Noise
- Emissions from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz
- Consolidated testing encouraged, i.e. FCC and ETSI, etc.
- Include measurement uncertainty in GR1089
- Additional restrictions on the use of ferrites
The following modifications were made to Steady State Power Induction:
- Specifies loop lengths for xDSL and other OSP interface types
- Specifies Criteria for Span or Line Powered equipment
The following modifications were made to Electrical Safety Criteria Induction:
New Test Criteria Section 7.8 Laser Safety and Labeling Criteria
- All optical equipment must comply with GR-499, 21 CFR 1040.10, ANSI Z136.1, IEC 60825.2 and local regulations
- All optical products that contain lasers must contain cautionary labeling
The following modifications were made to Grounding and Bonding:
All equipment certified by an NRTL are exempt from the short-circuit test criteria under section 9.10
Customer is to provide full NRTL listed report detailing short-circuit tests performed
- Embedded Power Sources <15VA are exempt from testing
- Embedded Power Sources not NRTL Listed and >15VA shall be evaluated to section 9.10
The following modifications were made to Criteria for DC Power Sources of the Telecommunication Load equipment:
10.3 Overvoltage (Steady State) as Per ATIS 0600315.2007
- The EUT shall continue to operate normally with an overvoltage condition at maximum operation voltage for 30 min.
10.4 Overvoltage Transient
- The EUT must continue to operate normally with a -75V Overvoltage transient that consist of a 10V/ms with a 10ms duration.
10.5 Protective Device Transient
- This test criterion combines all individual test transients into one section as in ATT TP76200 Document. All test criteria for Overvoltage, Undervoltage and Impulse Transients are the same as previous edition.
10.6 Noise Returned by Telecommunication Load Equipment
- Changed minimum current requirements from 1A minimum to a 10A minimum. Equipment <10A will use the new minimum 10A for limit calculation.
- Changed test setup to add High Impedance Transducer for emission readings
10.8 Marking and Documentation
- Equipment shall be marked to show intended nominal voltage or voltage range. The marking shall be non-removable and located in a general area where it can be easily visible without moving faceplate, covers or cables.
New Port Types
New port type lists were added:
- Type 3a/5a Inter Cell Site Cable Port (I.E T1 or Ethernet)
- Type 3b/5b Short Reach OSP (I.E Ethernet or POE) for definition
- Type 4a Customer Side ONT and iNIDS (I.E POTS or Ethernet)
- Type 8a DC Power to Antenna
- Type 8b Intra-Cell site DC Power
See Appendix B for definition of the new port types.
Last week, MET Labs hosted a joint meeting of the Central Texas Chapter of the IEEE EMC Society and the Central Texas Chapter of the IEEE Product Safety Engineering Society. The feature presentation – “Ten Things You Must Know about NEBS” – was a topic of interest to both groups.
The Network Equipment Building System (NEBS) testing presentation was introductory in nature, but featured some information that we thought would be interesting to Compliance Today readers:
Cost Versus Schedule
The more samples provided, the quicker the testing process. On the flip side, the more samples provided, the higher the test costs. The telecom equipment manufacturer needs to submit to the test lab the optimal number of samples to balance speed and cost.
Plan on a minimum of three units for the NEBS test cycle:
- One for GR-63-CORE
- One for GR-1089-CORE
- One for second level lightning, AC power fault, and fire resistance tests
GR-63-CORE requires that a product be set on fire from the inside. A methane line burner (simulating a burning line card) is inserted into the product and allowed to burn for 330 seconds.
This test should be performed first on a unit that is populated with the correct fuel load. The mechanism for the normal operation of the fans should be engaged and the unit should be fully cabled as well.
The NEBS seismic test simulates about an 8.2 Richter Scale earthquake. Equipment must be operational before and after the test. The objective is the equipment is operational during the test.
GR-1089-CORE specifies electromagnetic compatibility (EMC) testing requirements.
Section 2 covers electrostatic discharge (ESD) and electrical fast transients (EFT). ESD testing is performed at 4 kV and 15 kV air and 8 kV contact.
Section 3 covers electromagnetic interference (EMI). A NEBS product must pass radiated and conducted emissions tests as well as radiated and conducted immunity tests. The frequency range for radiated emissions and immunity is 10 kHz to 10 GHz.
Section 4 covers lightning and AC power fault requirements. Even if the product doesn’t have any signals going to outside plant (OSP), there are still intra-building surge and power-cross events that must be addressed.
Section 5 covers steady-state power induction. This affects network equipment interfacing with OSP.
Additional RBOC Requirements
Each Regional Bell Operating Company (RBOC) has its own requirements beyond GR-63 and GR-1089.
Verizon has stricter pass criteria for fire resistance and has its own guidelines for some of the EMC requirements. Verizon also has specifications for hazardous substances (RoHS), energy efficiency (TEEER), and thermal modeling (TMST).
AT&T has its own requirements for DC power and energy efficiency (TEER).
Last month, Verizon revised its Technical Purchasing Requirement VZ.TPR.9203 to include testing requirements by location for wireless Network Equipment Building System (NEBS) equipment. Issue 5 replaces Issue 4, which dated from March, 2009.
Wireless equipment is a small, but growing, portion of the overall NEBS market.
VZ.TPR.9203 Issue 5 includes a new “Table 2,” which details wireless requirements by location for testing to GR-63-CORE Issue 3 (environmental simulation), GR-1089-CORE Issue 4 (electromagnetic compatibility and safety), and VZ.TPR.9205 TEEER (energy efficiency).
Issue 5 maintains Table 1, which details testing requirements by location for “wireline” or landline NEBS equipment.
For wireless, equipment located in Mobile Switching Centers (MSC) has the most testing requirements, followed by Hubs, and Cell Sites, which has the fewest testing requirements.
In other Verizon NEBS news, the telecom giant issued this month a new Technical Purchasing Requirement – VZ.TPR.9508 – to define the minimum required NEBS and battery reserve testing for VRLA batteries supporting FiOS services.
Verizon NEBS compliance is gained through the Verizon Independent Testing Laboratories (ITL) NEBS Testing Certification Program (NEBS-TCP). MET Labs is one of the independent labs recognized by Verizon under the NEBS-TCP program.
Read more about Verizon’s NEBS requirements.
Telcordia Technologies has released the Issue 6 update to GR-1089-CORE, Electromagnetic Compatibility (EMC) and Electrical Safety – Generic Criteria for Network Telecommunications Equipment. Issue 6 replaces Issue 5, which dated from August 2009.
Here is a sneak peak at some of the key updates in the Network Equipment Building System (NEBS) document:
- Section 3, “Electromagnetic Interference (EMI),” radiated and magnetic emissions requirements have been revised to eliminate testing at frequencies below 30 MHz.
- Section 4, “Lightning and Power Fault,” includes major revisions to simplify and condense this section. Many technical issues related to lightning were updated. Several tables were also combined for this re-issue.
- Section 5, “Steady-State Power Induction,” contains several new and revised figures.
- Appendix A, “Definition of Double-Exponential Waveform and Waveform Characterization,” is expanded to 6 pages, up from 2 pages in Issue 5.
- Appendix B, “Application Guidelines,” skinnies to 10 (from 17 in Issue 5) the reference section numbers for Applicable Criteria Set B for Network Equipment Ports.
- Appendix F, “Wireless,” is new. This appendix lists the minimum wireless product performance parameters that must be monitored during all immunity tests.
- Test parameters for ground resistivity, fast rise-time surges, and interaction with gas tubes were also updated.
The new document will soon be available on Telcordia’s Information SuperStore.
The key question yet to be answered: When will Verizon and the other RBOCs adopt the Issue 6 document as mandatory for NEBS compliance? Check back here for updates.
Read more about the requirements of NEBS testing.
NEBS Guru Chuck Graff dropped a bombshell today, the first day of the 16th annual Verizon NEBS Conference in Scottsdale, AZ. He announced his retirement.
All the other presentations about the broadband and wireless network, smart grid, ATT’s overview, energy efficiency, and even the presentation on evaluating product change paled in comparison. Chuck’s official title is Director of Verizon Core Network and Technology, but in reality he is the Gatekeeper, Holder of the NEBS Test Commandments, and Chairman of the Board for all things concerning NEBS.
Chuck most recently told me of his intent to retire early this summer, when he and I were discussing some ITL issues. With 37 years with Verizon under his belt, this wasn’t the first time he’d mentioned it. So when I heard it, I smiled and invoked my state of Missouri citizenship card and told him that I would believe it when I saw it.
Today, when he shook my hand, he had a smile on his face that seemingly said, ‘Are there any good fishing holes in Missouri?’
Despite his planned departure, the industry will continue to remember Chuck as the undisputed champion of NEBS compliance, the one who made many understand the importance and value of NEBS testing.