This Standard specifies the mechanical and transmission requirements of category 3, 5e, 6, 6A, and 8 balanced twisted-pair copper cabling and components.
ANSI/TIA-568.2-D “Balanced Twisted-Pair Telecommunications Cabling and Components” was developed by the TIA TR-42.7 Copper Cabling Subcommittee and published in September, 2018.
Significant changes from the previous edition include:
- Category 8 cabling and component requirements have been integrated into the main document
- An allowance for the use of 28 AWG patch cords has been added
- An MPTL (modular plug terminated link) is permitted in certain limited cases where there may be a need to terminate a horizontal cable directly to a device
- Laboratory test methodologies, including methods for category 8 cabling and components up to 2 GHz and the use of balunless test fixtures, have been added
- Detailed modeling information for cables installed in higher temperature environments, such as return air plenums, ceiling spaces, riser shafts, and non air-conditioned buildings, is provided
ANSI/TIA-568.2-D Content
- Mechanical Requirements
- Transmission Requirements
- Annexes addressing Reliability Testing of Connecting Hardware, General Measurement Requirements, Cabling and Component Test Procedures using Baluns, Cabling and Component Balunless Test Procedures, Connecting Hardware Transfer Impedance Test Method, Modular Plug Terminated Link, 28 AWG Cord Cable Performance, Connecting Hardware Test Fixtures, Cable Installation in Higher Temperature Environments, Derivation of Propagation Delay from Insertion Loss Equation, Development of Channel and Component Return Loss Limits, Modeling Configurations and Length Scaling, Additional Information on Channel and Permanent Link NEXT Loss Limits, PSAACRF and AFEXT Loss Normalization, and Category 5 Channel Parameters
Use of 28 AWG Patch Cords
ANSI/TIA-568.2-D generally requires conductor sizes of 22 AWG to 26 AWG for cord cable. In certain cases, it is recognized that it may be necessary to construct cords from 28 AWG cable. This is permitted if certain requirements related to the smaller conductor size are met as follows:
- Maximum channel and permanent link length is derated (i.e., reduced) to offset the additional insertion loss associated with the smaller conductor size as described in Annex G of the Standard.
- The maximum length of 28 AWG cords in a channel shall not exceed 15 m (49.2 ft).
- 28 AWG cord cable shall meet specified transmission and dc resistance performance requirements.
- The guidelines and limitations on using 28 AWG patch cords for power delivery specified in TIA‑TSB‑184‑A‑1 shall be followed.
MPTL – Modular Plug Terminated Link
ANSI/TIA-568.2-D requires that horizontal cable be terminated onto a telecommunications outlet in the work area to provide flexible access to the user. In certain limited cases, it is recognized that there may be a need to terminate a horizontal cable directly to a plug that is inserted into a device such as a security camera, a radio enabled wireless access device, or another device that is not often moved or rearranged. Annex F of this Standard provides guidance on topology and transmission limits to ensure the proper functioning of this special link configuration.
Click here for archive information on ANSI/TIA-568-C.2.
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