The Fluke report is the object of value that a cabling contractor hands over at project close. It is proof the cable was installed to specification, it is the artifact a manufacturer requires to register a warranty, and it is the baseline every future troubleshoot compares against. A buyer who cannot read one is at the mercy of the contractor who produced it.
- The .flw file, not the PDF, is the authoritative record.
- PASS/FAIL is a summary — the margins tell you whether the plant will age well.
- Set the correct standard limit on the tester before certification, not after.
- Every drop, every time — sampling is not certification.
Executive summary
A proper certification deliverable is one .flw file per project, opened in LinkWare or Versiv, containing one PASS record per drop with adequate margin on the critical parameters (NEXT, return loss, insertion loss, propagation delay). The PDF is a convenience; the .flw file is what the manufacturer will look at when a warranty claim is filed.
What the buyer is really buying
The buyer is buying provable performance and the ability to file a warranty claim. Both depend on native tester files, correct limit selection, and a report that names the correct project, technician, and calibration date.
What the tester measures
| Parameter | What it measures | Typical concern |
|---|---|---|
| Wiremap | Pin-to-pin continuity and pairing | Reversed pairs, splits |
| Length | Physical length | Runs approaching 90 m permanent link |
| Insertion loss | Signal attenuation | Long runs, low margin |
| NEXT | Near-end crosstalk | Poor terminations, untwisted pairs |
| ACR-F / ACR-N | Attenuation-to-crosstalk ratio | Overall channel quality |
| Return loss | Reflected energy | Impedance mismatches at jacks |
| Propagation delay / skew | Timing across pairs | Length mismatch across pairs |
Common mistakes on the tester
- Testing a Cat6A permanent link against a Cat6 limit — everything passes with room to spare, but the certification is meaningless.
- Testing channels when the specification called for permanent link — the results are not comparable.
- Uncalibrated adapters — accreditation on the tester means nothing if the field adapters are expired.
- Missing headers — project name, technician, and site info blank.
What to demand
- One .flw file per project, delivered as an artifact.
- PDF summary and per-drop reports as a secondary deliverable.
- Tester model and calibration date visible on every report.
- Correct limit selected: 568.2-D Cat6A permanent link (or equivalent) for a Cat6A install.
- Any drop with a margin below 3 dB flagged for review, even if it passes.
Reading a report in five minutes
- Confirm the header: project, technician, date, tester model, calibration date.
- Confirm the limit: Category and permanent link vs. channel.
- Scan the summary: any FAIL should be investigated before signoff.
- Sort by worst NEXT margin: anything under 3 dB deserves a look.
- Match drop count to the cable schedule: 214 drops installed should be 214 tests.
When to call a professional
If the certification report cannot be produced in native format, the plant was not certified — it was tested. When a manufacturer warranty claim is on the line, only the native file counts. Have a qualified installer re-certify before closeout.