Archive for June, 2012
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The salt fog requirement of VZ.TPR.9307 for central office equipment is no longer applicable.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.
A draft of Revision G of MIL-STD-461 has not been released yet, but MET Labs has obtained information about proposed changes to the Military EMC test. As covered in this previous post, one of the primary changes is the incorporation of indirect lightning testing heavily leveraged off of Section 22 of RTCA/DO-160G. There is no lightning requirement in MIL-STD-461F, which was released in 2007.
There is one test that is very likely to be added to MIL-STD-461G: CS117
There are two additional tests that are being considered, but are much less likely to be included: RS106 & RS108
Information about the CS117 test:
- Derived from DO-160 Section 22 lightning induced transient susceptibility
- Includes Multiple Burst/Single Stroke same as DO-160
- Idea is not to change waveforms; services (Army, Navy, Air Force) would need to control the application
- Cable injection only – no pin injection testing
- Limited applicability (aircraft electronics) based upon specific program contact call out
Information about the RS106 test:
- Similar to RS105 (EMP free field test for equipment)
- Limited applicability – mainly for external stores (missiles, pods, ground equipment, etc.)
Information about the RS108 test:
- Similar to RTCA/DO-160 Section 23 Lightning Direct Effects
- Limited applicability (antennas or other external located items) based upon specific program contact call out
The rollout of MIL-STD-461G is currently scheduled for an initial draft in June 2013, a final draft in September 2013, and release in Fall 2014.
Want to know more about upcoming changes to MIL-STD-461? Consider attending one of these events:
In two days, MET is hosting a MIL-STD Testing Seminar in Santa Clara, California.
Next week, attend this Lightning Testing Webinar.
In August, Pittsburgh is hosting the EMC Symposium, where MET Labs is exhibiting in booth #1024.
Or contact us with questions or a quote request.
In March, MET Labs attended a CTIA Battery Certification Program meeting at Verizon Wireless in Bridgewater, New Jersey. The meeting was attended by carriers (AT&T and Verizon), CTIA-Approved Test Labs (CATLs) and a few vendors. The focus of the meeting was to address pending issues and update the battery certification program requirements and management documents.
CTIA manages a program to permit operators and their suppliers to validate a lithium ion battery’s compliance with the IEEE Standard for Rechargeable Batteries for Cellular Telephones, IEEE Standard 1725 – 2011, and the IEEE Standard for Rechargeable Batteries for Multi-Cell Mobile Computing Devices, IEEE Standard 1625 – 2008.
Some of the main discussion points were as follows:
The temperature sensing device (e.g. thermistor) will be tested to ensure it meets the manufacturer or the battery pack vendor stated temperature range. The purpose of this validation is to ensure that a thermal sensor either in the battery pack and/or host monitors cell temperature and works with the system to limit operation within the cell’s safe thermal specifications. This is to mitigate potential hazards, such as shutdown, or disabling of charging and/or discharging, or other protective action.
The test voltage for ESD will be at the minimum level 2 (2Kv or 4KV) and can also be higher (e.g. 8Kv) depending on the battery casing material.
CTIA will revise and clarify procedures for site evaluation to ensure all CATLs follow the same guidelines for site evaluations. CATLs will evaluate systems, subsystems and manufacturing sites using criteria set forth in the certification requirement document (CRD) in accordance with the applicable version of the Certification Requirement Status List (CRSL).
For non-embedded packs, the worst case test condition shall be used for testing.
Coin Cell Inclusion
IEEE 1625 and IEEE 1725 will be reviewed to include coin cell batteries in the program.
A new section in the Program Management Document (PMD) covers issue resolutions and challenges regarding site recognition or certification. The introduction of this section will mean the validity of site recognition or a certification of a product could be challenged by another CATL or Vendor. If a challenge is successful, the operator members of the CATL review committee may place the CATL or Vendor who was challenged on probation, suspension or revocation, depending on the severity of the findings.
Find out more about battery testing and get a quote.