ANSI/TIA-1152-A
Updated 2026-10-25
Data records
- ANSI/TIA-1152-A defines measurement accuracy as the difference between the measured value and the actual value of a parameter.
- ANSI/TIA-1152-A requires the plugs of permanent link adapters to fall within the test plug crosstalk ranges of the category being tested, or to be shown equivalent by comparison with a qualified reference plug.
- ANSI/TIA-1152-A requires the tester manufacturer to supply a simple field procedure for checking measurement consistency, and recommends repeat tests on a reference link, swapping the local and remote units, and a reproducibility trial by several operators.
- ANSI/TIA-1152-A sets no calibration interval for field testers; field verification rests on the consistency procedure the manufacturer provides.
- ANSI/TIA-1152-A requires a tester to let the user set the nominal velocity of propagation by measuring a cable segment of known length, for use in later length measurements.
- Beyond the pass or fail result, ANSI/TIA-1152-A recommends that worst-case measured values be recorded in the manner set out in ANSI/TIA-606-B.
- ANSI/TIA-1152-A permits only test cords and adapters that the tester manufacturer has qualified for the configuration being tested, and recommends periodic inspection of them for wear.
- ANSI/TIA-1152-A computes the accuracy of each level at the permanent link and channel limits of that level's category, so the nominal accuracy tables for different levels are not directly comparable with one another.
- ANSI/TIA-1152-A calls for a Level IIIe tester to measure alien crosstalk on augmented Category 6 cabling. Alien crosstalk on Category 8 cabling calls for a Level 2G tester.
- Under ANSI/TIA-1152-A, each accuracy level covers its own category and every lower category, so a Level IIIe tester serves augmented Category 6 cabling and every category below it.
- ANSI/TIA-1152-A defines four tester accuracy levels, each matched to a cabling category. Level IIe serves Category 5e and Level III serves Category 6. Level IIIe serves augmented Category 6. Level 2G serves Category 8.
- Clause 4.7 of ANSI/TIA-1152-A has the tester measure alien NEXT and FEXT and report their power sums, adding averaged power sums for augmented Category 6 only, together with the end from which the test was made.
- Clause 4.6 of ANSI/TIA-1152-A combines the individual performance parameters of a tester into error models that predict its accuracy for each measured quantity, adding some contributions directly and others as power sums.
- Clause 4.8 of ANSI/TIA-1152-A compares field results on conforming links with network analyzer measurements, and treats agreement within the sum of the two instruments' estimated accuracies as acceptable.
- Clause 4.5 of ANSI/TIA-1152-A gives the procedures by which the performance parameters of a tester, such as balance, residual crosstalk, noise floor, directivity and source match, are determined.
- ANSI/TIA-1152-A requires NEXT, PSNEXT and return loss to be measured and reported from both the local and the remote end of the cabling.
- ANSI/TIA-1152-A calls for detailed results covering connectivity and every parameter at every frequency point with a pass or fail for each parameter, requires Level 2G testers to save all measured data while recommending the same at lower levels, and requires upload to a computer.
- When length is derived electrically, ANSI/TIA-1152-A bases the reported length and its pass or fail on the pair with the shortest delay, judged against the maximum link or channel length increased by an allowance for velocity of propagation uncertainty.
- Under ANSI/TIA-1152-A, a parameter result whose distance from its limit is smaller than the tester manufacturer's published measurement accuracy is flagged with an asterisk as a marginal pass or marginal fail, and the manufacturer has to document how such results are to be read.
- The asterisk marking for marginal results in ANSI/TIA-1152-A applies to augmented Category 6 and lower permanent links and channels only; Category 8 results carry no marginal marking under the standard.
- ANSI/TIA-1152-A contains no provision that sets aside a NEXT, PSNEXT or ACRF failure on account of low insertion loss; the only result-reporting provision it ties to low insertion loss concerns return loss.
- For the overall verdict, ANSI/TIA-1152-A counts a marginal pass as a pass and a marginal fail as a fail, so the cabling passes only when every individual result is a pass or marginal pass.
- ANSI/TIA-1152-A requires a field tester to measure and report, for both permanent links and channels, wire map, insertion loss, length, NEXT, PSNEXT, ACRF, PSACRF, return loss, propagation delay and delay skew.
- Under ANSI/TIA-1152-A, dc loop resistance and resistance unbalance within a pair and between pairs are optional measurements at every level; a tester that offers them is held to the resistance accuracy requirements of the standard.
- ANSI/TIA-1152-A provides that when the measured insertion loss is below a fixed threshold, the measured return loss is not to be used to declare a failure, although it may still be reported, and very high return loss may be shown as exceeding a stated value.
- The summary report of ANSI/TIA-1152-A gives, for each crosstalk and return loss parameter, the worst margin and the worst value with the limit, frequency and pair or pair combination at which each occurred, reported from both ends wherever the standard calls for two-ended testing.
- The wire map test of ANSI/TIA-1152-A checks each conductor for continuity to the far end and detects shorts, reversed pairs, split pairs, transposed pairs and other miswiring, along with screen continuity where a screen is present.
- All four annexes of ANSI/TIA-1152-A are informative: laboratory reference accuracy, the derivation of Level 2G source match and tracking, the applicability of resistance measurements, and a bibliography.
- Clause 4 of ANSI/TIA-1152-A, which is entirely normative, covers accuracy levels, data reporting, field procedures, accuracy requirements per level, procedures for determining tester parameters, error models, alien crosstalk and comparison with laboratory measurement.
- ANSI/TIA-1152-A draws its link and channel limits from ANSI/TIA-568-C.2 for augmented Category 6 and the lower categories, and from the ANSI/TIA-568-C.2-1 addendum for Category 8, and names ANSI/TIA-606-B for recording and ANSI/TIA-1183-1 for balunless laboratory fixtures.
Elsewhere in the family
- Requirements for Field Test Instruments and Measurements for Balanced Twisted-Pair Cabling more on this entry on Testing Reference
Sources
- ANSI/TIA-1152-A, Requirements for Field Test Instruments and Measurements for Balanced Twisted-Pair Cabling, 2016 edition, TIA. Cited: clause 4.2.4; clause 4.4.5, 4.4.6, 4.4.7; clause 4.3.1; clause 4.2.3.2; clause 4.3.2; clause 4.3.3; clause 4.4.2; clause 4.7.1; clause 4.1; clause 4.7.3; clause 4.6; clause 4.8; clause 4.5; clause 4.2.1; clause 4.2.4, 4.2.5; clause 4.2.3.1; clause 4.2.6; clause 4.2.1.1; clause 4.2.2; clause Table of contents; clause 2. Held as: Purchased single-user copy.
Obtaining the documents
- ANSI/TIA-1152-A (2016): publisher catalog or sales page
Changelog (63 entries)
| Date | Revision | Change |
|---|---|---|
| 2026-10-25 | created (std.tia-1152-a.definition.accuracy) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.definition.accuracy) | |
| 2026-10-25 | created (std.tia-1152-a.field-test.adapter-plugs) | |
| 2026-10-25 | revised (std.tia-1152-a.field-test.adapter-plugs) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.field-test.adapter-plugs) | |
| 2026-10-25 | created (std.tia-1152-a.field-test.consistency-procedure) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.field-test.consistency-procedure) | |
| 2026-10-25 | created (std.tia-1152-a.field-test.no-calibration-interval) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.field-test.no-calibration-interval) | |
| 2026-10-25 | created (std.tia-1152-a.field-test.nvp-calibration) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.field-test.nvp-calibration) | |
| 2026-10-25 | created (std.tia-1152-a.field-test.recording) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.field-test.recording) | |
| 2026-10-25 | created (std.tia-1152-a.field-test.test-cords) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.field-test.test-cords) | |
| 2026-10-25 | created (std.tia-1152-a.levels.accuracy-basis) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.levels.accuracy-basis) | |
| 2026-10-25 | created (std.tia-1152-a.levels.alien-crosstalk) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.levels.alien-crosstalk) | |
| 2026-10-25 | created (std.tia-1152-a.levels.coverage) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.levels.coverage) | |
| 2026-10-25 | created (std.tia-1152-a.levels.names) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.levels.names) | |
| 2026-10-25 | created (std.tia-1152-a.method.alien-crosstalk) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.method.alien-crosstalk) | |
| 2026-10-25 | created (std.tia-1152-a.method.error-models) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.method.error-models) | |
| 2026-10-25 | created (std.tia-1152-a.method.lab-comparison) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.method.lab-comparison) | |
| 2026-10-25 | created (std.tia-1152-a.method.verification-procedures) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.method.verification-procedures) | |
| 2026-10-25 | created (std.tia-1152-a.reporting.both-ends) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.reporting.both-ends) | |
| 2026-10-25 | created (std.tia-1152-a.reporting.detailed-results) | |
| 2026-10-25 | revised (std.tia-1152-a.reporting.detailed-results) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.reporting.detailed-results) | |
| 2026-10-25 | created (std.tia-1152-a.reporting.length) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.reporting.length) | |
| 2026-10-25 | created (std.tia-1152-a.reporting.marginal-result) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.reporting.marginal-result) | |
| 2026-10-25 | created (std.tia-1152-a.reporting.marginal-scope) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.reporting.marginal-scope) | |
| 2026-10-25 | created (std.tia-1152-a.reporting.no-next-low-loss-rule) | |
| 2026-10-25 | revised (std.tia-1152-a.reporting.no-next-low-loss-rule) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.reporting.no-next-low-loss-rule) | |
| 2026-10-25 | created (std.tia-1152-a.reporting.overall-verdict) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.reporting.overall-verdict) | |
| 2026-10-25 | created (std.tia-1152-a.reporting.parameters) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.reporting.parameters) | |
| 2026-10-25 | created (std.tia-1152-a.reporting.resistance-optional) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.reporting.resistance-optional) | |
| 2026-10-25 | created (std.tia-1152-a.reporting.return-loss-low-loss) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.reporting.return-loss-low-loss) | |
| 2026-10-25 | created (std.tia-1152-a.reporting.summary) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.reporting.summary) | |
| 2026-10-25 | created (std.tia-1152-a.reporting.wire-map) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.reporting.wire-map) | |
| 2026-10-25 | created (std.tia-1152-a.structure.annexes) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.structure.annexes) | |
| 2026-10-25 | created (std.tia-1152-a.structure.clause-4) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.structure.clause-4) | |
| 2026-10-25 | created (std.tia-1152-a.structure.normative-references) | |
| 2026-10-25 | review_status unreviewed -> software_reviewed (std.tia-1152-a.structure.normative-references) |
Cite this page
Cite the governing standard for the fact itself; cite this page as the finding aid.
"ANSI/TIA-1152-A." Fiber Optic Reference. 2026-10-25. https://www.fiberopticreference.com/standards/tia-1152-a/.
Fiber Optic Reference, ANSI/TIA-1152-A (Oct. 25, 2026), https://www.fiberopticreference.com/standards/tia-1152-a/.
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title = {ANSI/TIA-1152-A},
howpublished = {\url{https://www.fiberopticreference.com/standards/tia-1152-a/}},
organization = {Fiber Optic Reference},
publisher = {Fiber Optic Reference},
year = {2026},
note = {last substantive change 2026-10-25}
}{{cite web |title=ANSI/TIA-1152-A |website=Fiber Optic Reference |publisher=Fiber Optic Reference |url=https://www.fiberopticreference.com/standards/tia-1152-a/ |date=2026-10-25 |access-date=}}