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Recent Update to Recent Update to Recent Update to Telcordia Telcordia Telcordia
GRGRGR---108910891089---CORECORECORE
Dave Lorusso Dave Lorusso Dave Lorusso Lorusso Technologies, LLCLorusso Technologies, LLCLorusso Technologies, LLCPatrick Webb Patrick Webb Patrick Webb National InstrumentsNational InstrumentsNational Instruments
2003 All Rights Reserved2003 All Rights Reserved2003 All Rights Reserved
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Presentation Overview
Introduction to Telcordia GR-1089-CORE Why did GR-1089-CORE Change? Section-by-Section Changes How do these changes affect my product? Wrap Up
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Introduction to GR-1089-CORE
Electromagnetic Compatibility and Electrical Safety Generic Criteria for Network Telecommunications Equipment
Nine major sections covering the EMC and Safety phenomenon as seen by the Central Office (CO) environment No single CO will experience all conditions
cited in GR-1089-CORE
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Introduction to GR-1089-CORE
In a nutshell: ESD, EFT, EMC, Lightning, Power Cross,
Steady-State Induction, DC Potential Difference, Electrical Safety, Corrosion, Grounding and Bonding
Approximately 150 Requirements and/or Objectives
Customer, not legal, requirements and/or objectives
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Why did GR-1089-CORE Change?
Last revision was February, 1999 Addresses:
ESD Harmonization with IEC 61000-4-2 EFT to telecom and power ports per IEC 61000-4-4 New xDSL services (conducted emissions and
immunity at broadband frequencies) New FCC Part 15 requirements on emission for ac
power lines. Guidance for use of current-limiters in high speed
digital networks
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Why did GR-1089-CORE Change?
Addresses: Clarifications in Section 4 Coaxial cables and power induction Harmonization of Electrical Safety terminology Guidance on the application of the criteria to various
types of network equipment. Number of samples clarification Performance language used for non-switching systems
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Section-by-Section Changes
Section 2 - System-Level Electrostatic Discharge (ESD) Updates bring GR-1089-CORE in line with IEC 61000-4-2
ESD References and Waveforms ESD Installation and Repair test objective changed to a requirement
Criteria objective to become a requirement January 1, 2005 ESD warning labels are now mandatory ESD severity and test point selection has not been changed New EFT Objective applies to all products
Was a Frame EFT test in Issue 2 used for Compatibility of FormerIBN Equipment with CBN Currents
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Section-by-Section Changes
Section 2 - System-Level Electrostatic Discharge (ESD) EFT criteria and test methods are in accordance with
IEC 61000-4-4 The EUT should not be damaged and should continue to operate
properly when five one-minute EFT/Burst applications of each polarity, positive and negative, are applied at:
0.25 kV for Port Types 1 and 2 as defined in Appendix B 0.5 kV for AC and DC Ports of network equipment to be located in
non-customer premises 0.5 kV for Port Types 3 and 4 as defined in Appendix B 1 kV for AC and DC Ports of equipment to be located in customer
premises
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Section-by-Section Changes
Section 3 Electromagnetic Interference Ensures that an EUT:
Complies with FCC Part 15 Complies with FCC Part 68 with technical criteria
per TIA/EIA/IS-968 Has intrasystem EMC with other equipment located
within the same facility Has Intersystem EMC between it and other
electronic equipment in the surrounding environment
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Section-by-Section Changes
Section 3 Electromagnetic Interference New class of interface Broadband
Conducted emissions and immunity Objectives added that coincide with FCC requirements
Applicable to DSL and other high speed interfaces deployed over Outside Plant (OSP)
Immunity testing Slower scan rate of 0.1% frequency steps from 1-8GHz and
0.05% steps from 8-10GHz Dwell frequencies of 2450MHz and 5800MHz have been
added for ISM-Bluetooth and ISM-Spread Spectrum respectively
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Section-by-Section Changes
Section 4 Lightning and AC Power Fault Major clarifications throughout [4.6] All paired telecommunications unshielded intra-building
interface ports are subject to surge testing Issue 2 exempted these ports Impact on Ethernet ports used in network management
[4.6] Adjacent ports to the tested port shall not be damaged andshall operate without manual intervention; adjacent ports are terminated as in service
[4.6] Clarification of proper operation after the unit is surge tested utilizing maximum rated loop length and performance criteria defined in standards
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Section-by-Section Changes
Section 4 Lightning and AC Power Fault [4.6.3] Number of samples tested has been clarified
3 Ports of the EUT in each applicable operating state except where explicitly stated
[4.6.6] Dedicated ground is required between EUT ground terminal and the surge generator; 48 V return grounding is required
[4.6.7] Clarification of Note 5 of Table 4-2 on the maximum operating threshold for a voltage-limiting device and instruction on disabling or removing the device for test
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Section-by-Section Changes
Section 4 Lightning and AC Power Fault [4.6.7.1] Coordination of secondary protection
addressed as an Objective; effective in 2005; mandatory in 2006
The value for Primary Protection must be called out in the product manual (400, 600, or 1000 V at 1000 V/uS
[4.6.10] First-Level AC Power Fault test Objectives numbers 6, 7, 8, and 9 are now Requirements
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Section-by-Section Changes
Section 4 Lightning and AC Power Fault [4.6.11] Modification of the Current-Limiting Protector
test Use of a Type MDQ 1-6/10A or Type MDL 2.0A fuse still
acceptable as the external current limiter indicator; also allows non-invasive time-current measurement techniques
Various short-circuit currents are added 2.2, 2.6, 3, 3.75, 5, 7, 10, 12.5, 20, 25, and 30 Arms for up to 15 minutes
Listing requirements moved to Section 7
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Section-by-Section Changes
Section 5 Steady-State Power Induction Longitudinal induction for coaxial cables
Three units shall be tested Requirement - 15Vrms/60Hz triangular waveform
Products that meet the requirement should be immune to most induction environments
Objective - 30Vrms/60Hz triangular waveform Products that meet the objective should be immune even
in severe induction environments
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Section-by-Section Changes
Section 6 DC Potential Difference No changes were made in this section
Finally, a break!
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Section-by-Section Changes
Section 7 Electrical Safety Criteria Listing requirements added Overview section provides clearer view on how to
evaluate equipmentby deployment; accessibility better defined
Continuous Source voltage limits better defined Between each terminal and ground with all other terminals
connected as in normal service Limits also apply between each terminal and ground with all
other terminals open circuted Paired-conductor sources or similar circuits, the limits shall
apply with all other terminals individually grounded
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Section-by-Section Changes
Section 7 Electrical Safety Criteria Industry standardized sources known to be below Class
A1 do not need to be tested RS-232, V.35, 10BaseT, 100BaseT, X.25, DSX-1, E1, DS3,
USB
Interrupted/Tripped voltages Can use NRTL data according to UL 60950 Method B as
described in Annex M.3
Sources applied to communication wiring limited to 1.3 A is the ampacity of the wiring is not specified
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Section-by-Section Changes
Section 8 Corrosion DC Voltages to outside plant cabling
The objective still exists that DC voltage potentials between telecommunications conductors and ground be less than 56.7 volts to prevent leakage current
However, it is no longer suggested that the voltage potential be negative respective to ground
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Section-by-Section Changes
Section 9 Bonding and Grounding Guidance is provided to instruct where
requirements are applicable: i.e. equipment in COs, outside plant, etc.
Small metallic surfaces (less than 100mm2surface area) not likely to be energized do not have to be grounded
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Section-by-Section Changes
Section 9 Bonding and Grounding Instructions must be included with equipment
to remove paint and clean metal with an anti-oxidant where ground connections are made
Provisions for connections and bonding of circuit packs have been added
Painted surfaces are considered to be conductive
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Section-by-Section Changes
Section 9 Bonding and Grounding Short Circuit Test
Equipment does not need to be functional after the short circuit test
No fire/fragmentation or damage to the fault current path is allowed
No damage to other subassemblies is allowed If the current is interrupted by a non NRTL listed
fuse the test must be repeated twice
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
How do these changes affect my product? Clarifications and Harmonization
Make for easier interpretation of the requirements
New Requirements EFT Objective applies to all products Broadband Interfaces added Significant change to Lightning and AC Power Fault
section Coaxial port immunity to steady-state power induction Bonding and Grounding integrity enforcement
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
How do these changes affect my product? Current NEBS Level 3 products will need to
be reviewed against new requirements. Additional testing costs Additional test time Will result in a more robust product
IEEE EMC Symposium - August, 2003 "Recent Update to Telcordia GR-1089-CORE" www.lorusso.com
Wrap Up
Thank you for your participation
Resources: www.nebs-faq.com www.lorusso.com Or call us:
Dave Lorusso - 512-695-5871 Patrick Webb 512-683-5743
Recent Update to Telcordia GR-1089-COREPresentation OverviewIntroduction to GR-1089-COREIntroduction to GR-1089-COREWhy did GR-1089-CORE Change?Why did GR-1089-CORE Change?Section-by-Section ChangesSection-by-Section ChangesSection-by-Section ChangesSection-by-Section ChangesSection-by-Section ChangesSection-by-Section ChangesSection-by-Section ChangesSection-by-Section ChangesSection-by-Section ChangesSection-by-Section ChangesSection-by-Section ChangesSection-by-Section ChangesSection-by-Section ChangesSection-by-Section ChangesSection-by-Section ChangesSection-by-Section ChangesHow do these changes affect my product?How do these changes affect my product?Wrap Up