1、 TSB-31-D-2 (Addendum to TSB-31-D) January 2015Telecommunications Telephone Terminal Equipment Rationale and Measurement Guidelines for U.S. Network Protection-Addendum 2NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings
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23、ITATIONS. TSB-31-D-2 iTable of Contents 1. SCOPE 1 2. MODIFICATIONS TO TSB-31-D . 1 2.1 Changes to clause 3, REFERENCES . 1 2.2 Changes to subclause 4 Definitions, Acronyms and Abbreviations . 2 2.3 Changes to subclause 5.5, Suggested Equipment List (SEL) 2 2.4 Changes to subclause 6.1 Sequence of E
24、nvironmental Simulations . 2 2.5 Changes to subclause 9.15 Non-LADC Longitudinal Voltage 0.1 4 kHz TIA-968-B, 5.1.7. 3 2.6 Changes to subclause 9.17 Non-LADC Longitudinal Voltage 4 kHz to 6 MHz TIA-968-B, 5.1.8.3, 5.1.8.4 3 2.7 Addition of new subclause 9.41, Acoustic Stimulus for Performing Measure
25、ments on Acoustically Coupled Devices 3 TSB-31-D-2 iiFOREWORD (This foreword is not part of this Standard.) This document is an addendum to TIA TSB-31-D, Telecommunications Telephone Terminal Equipment Rationale and Measurement Guidelines for U.S. Network Protection. It was developed to provide a ne
26、w subsection on test procedures for performing out-of-band metallic and longitudinal noise measurements on equipment with acoustic inputs. In addition this addendum includes some modifications to the sequencing of environmental simulations and grounding requirements when performing longitudinal volt
27、age measurements. This addendum was produced by Subcommittee TR-41.9, Technical and Administrative Regulatory Considerations. It was developed in accordance with TIA procedural guidelines and represents the consensus position of the Subcommittee, which served as the formulating group. It also receiv
28、ed the concurrence of Engineering Committee TR-41, Performance and Accessibility for Communications Products. The leadership of the TR-41.9 Technical and Administrative Regulatory acknowledges the written contributions provided by the following individuals in the development of this addendum. Organi
29、zation Representative TSB-31-D-2 Industry Canada Jason Nixon Editor Industry Canada Magdoly Rondon Editor Cisco Systems Tim Lawler Suggestions for improvement of this standard are welcome. They should be sent to: Telecommunications Industry Association Technology and Standards Department Suite 200 1
30、320 N. Courthouse Rd. Arlington, VA 22201 ( http:/www.tiaonline.org ) TSB-31-D-2 1 1. SCOPE This addendum provides changes to TSB-31-D, Telecommunications Telephone Terminal Equipment Rationale and Measurement Guidelines for U.S. Network Protection. Changes in this addendum include: - additions to t
31、he references in Clause 3 - addition of some definitions Subclause 4 Definitions, Acronyms and Abbreviations; - modifications to the test sequence Subclause 6.1 Sequence of Environmental Simulations; - modifications to grounding requirements when performing longitudinal voltage measurements Subclaus
32、e 9.15 Non-LADC Longitudinal Voltage 0.1- 4 kHz and subclause 9.17 Non-LADC Longitudinal Voltage 4 kHz to 6 MHz; and - new subsection on test procedures for performing out-of-band metallic and longitudinal noise measurements on equipment with acoustic inputs - Subsection 9.41 Acoustic Stimulus For P
33、erforming Measurements On Acoustically Coupled Devices. The other clauses and subclauses in TSB-31-D are not affected. Additions to the text are shown underlined and deletions are shown using strikeout. Words that appear in underlined italics are intended as instructions to the reader. 2. MODIFICATI
34、ONS TO TSB-31-D 2.1 Changes to clause 3, REFERENCES Add the following references to Section 3: ANSI/TIA-470.120-C, 2011, Telecommunications Telephone Terminal Equipment Transmission Requirements for Analog Speakerphones ANSI/TIA-470.130-C, 2008, Telecommunications Telephone Terminal Equipment Transm
35、ission Requirements for Analog Telephones with Headsets ITU-T Recommendation P.58 (2011-12), Head and torso simulator for telephonometry Revise the following references in Section 3: 3. ANSI/TIA-470.110-C, 2004, Telecommunications Telephone Terminal Equipment Handset Acoustic Performance Requirement
36、s for Analog Terminals 4. ANSI/TIA-470.110-C-1, 2007, Telecommunications - Telephone Terminal Equipment -Handset Acoustics Performance Requirements Addendum 1 3. ANSI/TIA-470.110-D, 2014, Telecommunications Telephone Terminal Equipment Transmission Requirements for Analog Telephones with Handsets TS
37、B-31-D-2 2 4. Reserved 2.2 Changes to subclause 4 Definitions, Acronyms and Abbreviations Add the following definitions Acoustically Coupled Device: An audio interface device that contains an electro-acoustic transducer for live voice input, including recording devices. Fully Operational Device: A d
38、evice capable of operating under all operational modes defined within the user manual. Normal Usage Conditions: Any operating mode of the device that is defined in the user manual. This includes, but is not limited to, different interconnection options to the user as well as any accessory configurat
39、ions. 2.3 Changes to subclause 5.5, Suggested Equipment List (SEL) Modify item (53) as follows: (53) Microphone amplifier: The frequency response characteristics of this amplifier should be constant over the frequency range from 100 Hz to 5000 8000 Hz. The input-output characteristics of this amplif
40、ier should be linear for the range of sound pressure levels to be measured Add the items 75 through 77 as follows: (75) Signal source with IEEE 269 real male speech. (76) ITU-T P.58 Head and Torso Simulator (HATS). (77) Real-Time Analyzer: An analyzer capable of measuring real-time analysis with 1/1
41、2th octave bands averaged over the entire duration of the test signal. 2.4 Changes to subclause 6.1 Sequence of Environmental Simulations Modify the first paragraph as follows: TIA-968-B subclause 4.1 requires that “Unpackaged Certified Terminal Equipment and Certified Protective Circuitry shall com
42、ply with all the criteria specified in this standard, both prior to and after the application of each of the mechanical and electrical stresses TSB-31-D-2 3 specified in this section“ For practical reasons, the accepted method for equipment which has not been affected by environmental simulations is
43、 to perform complete electrical testing, not after each stress but once after all stresses.For practical reasons, if the device is fully operational following the application of the environmental simulations, complete electrical testing may be performed following the application of all stresses as o
44、pposed to following each stress. If the device under test is not fully operational following the application of the electrical stresses, then complete electrical testing shall be repeated following each stress on a second sample to demonstrate compliance. 2.5 Changes to subclause 9.15 Non-LADC Longi
45、tudinal Voltage 0.1 4 kHz TIA-968-B, 5.1.7 Modify the Note of subclause 9.15.4 Equipment States Subject to Test as follows: Note: Terminal equipment may require special attention to ensure it is properly configured for this test. For example, If the equipment would normally be connected to ac-power
46、ground, or cold-water-pipe ground, or if it has a metallic or partially metallic exposed surface, then these points should be connected to the test ground plane. Similarly,If the EUT, under normal usage conditions, provides connections to other equipment through which ground may be introduced to the
47、 equipment, then these points should be connected to the test ground plane. The EUT should comply with the longitudinal voltage limits under all normal usage conditions. Equipment which does not contain any of these potential connections to ground should be placed on a conductive plate which is conn
48、ected to the test ground plane (see comment 1); this applies to both non-powered and ac-powered equipment. 2.6 Changes to subclause 9.17 Non-LADC Longitudinal Voltage 4 kHz to 6 MHz TIA-968-B, 5.1.8.3, 5.1.8.4 Modify the Note of subclause 9.17.4 Equipment States Subject to Test as follows: Note: Ter
49、minal equipment may require special attention to ensure it is properly configured for this test. For example, If the equipment would normally be connected to ac-power ground, or cold-water-pipe ground, or if it has a metallic or partially metallic exposed surface, then these points should be connected to the test ground plane. Similarly,If the EUT, under normal usage conditions, provides connections to other equipment through which ground may be introduced to the equipment, then these points should be connected to the test ground plan
