Acceptance Testing and Certification
Acceptance testing is how a client knows the cabling they paid for actually meets specification. It is not a continuity check. It is a measured certification against the limits in ANSI/TIA-568 and CSA T528, recorded in a report that travels with the building.
Permanent link vs. channel
Copper certification runs in one of two configurations, and they test different things.
- The permanent link is the fixed cabling: the outlet, the horizontal cable, and the patch panel termination. It excludes the patch cords. This is what the installer is responsible for, so it is the usual acceptance test.
- The channel includes the permanent link plus the patch cords at both ends, up to the full 100 m. It reflects what the active equipment actually sees.
Each configuration has its own pass limits because the test reference points differ. Specify which one you want before the tester is on site. Most acceptance work is permanent link.
Certifying to category
A certification test verifies the link against a category, Cat6A for example, not just that signal passes. The tester compares measured values to the standard’s limits across the full frequency range, 500 MHz for Cat6A, and reports a margin for each parameter.
| Parameter | What it measures |
|---|---|
| Insertion loss | Signal lost end to end |
| NEXT | Near-end crosstalk between pairs |
| PS NEXT | Combined crosstalk on a pair from all others |
| Return loss | Signal reflected by impedance mismatch |
| ACR-F (ELFEXT) | Far-end crosstalk relative to loss |
| Propagation delay and delay skew | Timing across pairs |
| Wire map | Correct pin-to-pin connections |
A pass means every parameter cleared its limit with positive margin across the whole band. A marginal pass, where a value sits inside the limit but within the tester’s measurement uncertainty, is flagged as PASS* and is worth investigating.
Fibre: OLTS and OTDR
Fibre uses two instruments for two purposes.
- An Optical Loss Test Set measures end-to-end insertion loss against a loss budget. This is the required acceptance test under TIA-568. It tells you the link will carry the optics you plan to run.
- An OTDR traces the fibre and shows the location and loss of each event: connectors, splices, and faults. It is not a substitute for OLTS loss measurement, but it is the tool for finding where a bad link went wrong and for documenting splice quality.
Run OLTS for acceptance. Add OTDR for longer runs, spliced links, or troubleshooting.
Documentation and labelling
ANSI/TIA-606 is the administration standard. It sets how every cable, outlet, panel, and space is labelled and recorded so the system can be managed after handover. A certified install carries consistent identifiers from the outlet to the patch panel, matched to the test report and to as-built records.
Labelling is not cosmetic. A camera that drops offline is found in minutes when the cable, port, and panel all carry the same ID. Without it, someone traces wires.
The value of the report
The deliverable a client should insist on is the saved test report, one record per link, exported from the tester. It shows:
- The standard and category tested to.
- Pass or fail with the margin on each parameter.
- The tester model, calibration date, and operator.
- The cable ID matching the TIA-606 labelling.
That report is the basis of the manufacturer’s warranty, the proof the install met contract, and the baseline for any future fault. Keep it. A cabling system without test records is unverified, whatever it cost to put in.
References
Last updated 2026-06-14.