Two ADSS cable quotations arrive on your desk. Supplier A: $1.85/meter. Supplier B: $2.15/meter. The procurement instinct says choose A. The engineering instinct says read the fine print. Often, the cheaper quotation is more expensive — once you account for what’s missing from the specification. This guide provides a structured framework for comparing ADSS cable quotations beyond the headline price.
The 10-Point Quotation Comparison Framework
| # | Evaluation Point | What to Check | Red Flag If… |
|---|---|---|---|
| 1 | Fiber brand and type | Corning, YOFC, Sumitomo, or specific manufacturer? ITU-T designation (G.652D, G.655)? | “Standard single-mode fiber” with no ITU-T designation or manufacturer |
| 2 | Aramid yarn specification | Denier, strand count, brand (DuPont Kevlar or Teijin Twaron)? | “High-strength aramid yarn” with no quantitative specification. See our aramid yarn guide |
| 3 | Cable attenuation (guaranteed) | At 1310 nm and 1550 nm. G.652D must be ≤0.36 at 1310 and ≤0.22 at 1550 | Attenuation matching bare fiber spec (cable not tested) |
| 4 | MAT and RTS values | Are they appropriate for the span length? MAT should be 40-60% of RTS. See our MAT calculation guide | MAT equals RTS; MAT not specified |
| 5 | Jacket material and thickness | PE or AT? Thickness in mm? AT must reference IEC 62217 | “Tracking-resistant” without standard reference |
| 6 | Type-test certificates | Per IEC 60794. For the specific cable construction offered? | “Similar construction” or “representative sample” — not your cable |
| 7 | Warranty terms | Duration (years), attenuation drift coverage, hardware failure coverage | Warranty excluded for “environmental damage” without defining the term |
| 8 | Factory test reports per drum | OTDR traces at 1310 nm and 1550 nm, per drum, included with shipment? | “Testing available upon request” — should be standard |
| 9 | Lead time commitment | Firm date or estimated? Preform allocation confirmed? | “8-12 weeks estimated” — without production slot reservation |
| 10 | Incoterms and shipping | FOB, CIF, or DAP? Who bears shipping risk? Which port? | Incoterms not specified — means risk allocation is ambiguous |
The Hidden Cost of “Cheaper” Quotations
Supplier A’s $1.85/meter quotation looks better — until you find:
- Fiber is “standard single-mode” (no ITU-T designation → potentially lower-grade fiber with higher attenuation)
- Aramid yarn is “high-strength” (no denier specified → manufacturer can use minimum yarn that barely meets the span requirement)
- Warranty is 5 years (vs. 10+ years from Supplier B)
- Factory test reports “available upon request” (not included → you won’t know the actual attenuation until the cable arrives)
The difference between a properly specified cable and a minimally compliant one can be 3-8 years of service life — worth far more than $0.30/meter at purchase.
For framework guidance, see our IEC 60794 procurement guide and TDS reading guide.
How to Weight the Evaluation Criteria
For a balanced procurement evaluation, we recommend these weightings:
| Criterion | Weight | Why |
|---|---|---|
| Technical compliance (fiber, yarn, jacket, MAT) | 35% | Determines whether the cable will survive its design life |
| Test data and certification | 20% | Proves the cable meets the specification |
| Price per kilometer | 20% | Important — but only one factor among several |
| Lead time and delivery reliability | 15% | A late cable can delay an entire project |
| Warranty and after-sales support | 10% | Covers what happens when something goes wrong |
Key Takeaways
- Price per kilometer is only 20% of the evaluation. Technical compliance, test data, lead time, and warranty matter more.
- Compare quotations element by element, not headline to headline. Use the 10-point framework to normalize different quotation formats.
- A cheaper quotation that omits key specifications is more expensive over the cable’s 25-year life than a fully specified cable at a higher unit price.
- Verify test data, not certificates. Type-test certificates prove compliance at one point in time. Factory OTDR reports per drum prove compliance for your specific order.
Need Help Comparing ADSS Quotations?
Send us the quotations you’ve received — we’ll normalize them against the 10-point framework and provide an objective comparison with technical commentary. Free, no obligation.
Frequently Asked Questions
How should I compare ADSS cable quotations?
Compare 10 key elements: fiber brand, aramid yarn spec, attenuation, MAT/RTS, jacket material, test certificates, warranty, factory test reports, lead time, and Incoterms — not just price per kilometer.
Why is a cheaper ADSS quotation sometimes more expensive?
Cheaper quotations often omit or under-specify aramid yarn, fiber quality, and warranty terms. The result is a cable that may fail years earlier, costing far more in replacement than the initial savings.
What is the most important parameter to compare?
Aramid yarn specification (denier, strand count, brand) is the single most important — and most commonly omitted — parameter. It determines whether the cable can support its rated span.
How important is warranty in ADSS cable quotations?
Warranty should be weighted at 10% of the evaluation. A 10+ year warranty with attenuation drift coverage is standard for quality manufacturers.
What Incoterms should ADSS cable be quoted under?
CIF (Cost, Insurance, Freight) to the destination port is standard for international ADSS cable procurement. DAP (Delivered at Place) provides the most buyer protection.