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.”)
Removals
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
Sections 2-3
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
Section 5
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
Section 7
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
Section 9
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
Section 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.
Read more about the requirements of NEBS testing or register for complimentary NEBS seminars in Austin, Texas on November 1, or Baltimore, Maryland on November 8.