The AV87-13P2AWN delivers approximately 0.35 dB typical insertion loss, ≥26 dB return loss, and a mechanical rating of 500 mating cycles. Operating within -40°C to +85°C, it is engineered for high-density telecom modules and datacenter backbone links.
Overview: High-Density MT Duplex Architecture
Technical Context
The AV87-13P2AWN is a duplex MT form-factor connector designed for pre-terminated trunks and patch-panel cassettes. It utilizes a precision MT ferrule with two fiber positions, supporting both multimode (OM3/OM4) and singlemode (OS2) preparations.
Technical Specifications & Datasheet Summary
| Parameter | Value (Typical) | Limits / Notes |
|---|---|---|
| Insertion Loss (IL) | 0.35 dB | ≤ 0.75 dB (Max) |
| Return Loss (RL) | ≥ 26 dB | Varies by polish (APC > 60 dB) |
| Mating Cycles | 500 cycles | Per TIA/EIA standards |
| Temperature Range | -40°C to +85°C | Industrial grade reliability |
| Footprint | ~12.5 × 5 mm | MT Duplex high-density form |
Pinout & Wiring Conventions
The MT ferrule arranges two fibers side-by-side. Fiber mapping depends on the polarity scheme (Type A, B, or C). Typically, Position 1 is the left fiber (key up), and Position 2 is the right. For transceiver links, a crossover (1 to 2) is standard, while backbone trunks may utilize straight-through (1 to 1) mapping.
Installation & Best Practices
Mating Procedure
- Inspection: Use a 400x digital microscope to check for debris.
- Cleaning: Use a dry-cloth clicker cleaner specifically for MT ferrules.
- Alignment: Align the connector key with the adapter slot; insert until a positive "click" is felt.
Troubleshooting Matrix
| Symptom | Probable Cause | Corrective Action |
|---|---|---|
| High Insertion Loss | Contamination / Dust | Clean and re-inspect ferrule |
| Low Return Loss | Scratched End-face | Re-polish or replace connector |
| No Signal | Polarity Mismatch | Verify Type A/B wiring map |
Procurement FAQ
How should I verify insertion loss for a duplex MT connector?
Use a calibrated optical loss test set (OLTS) with reference patchcords. Record the average loss at 850nm or 1310nm. Compare against the 0.75 dB maximum limit defined in the AV87-13P2AWN datasheet.
What cleaning method is recommended for MT duplex ferrules?
Dry cleaning using an IBC-style tool is preferred. If contamination persists, use a lint-free wipe dampened with 99% isopropyl alcohol, followed immediately by a dry wipe and microscopic inspection.
Which tests are essential during site acceptance?
IL/RL testing, visual inspection (IEC 61300-3-35), and polarity verification. Ensure all results are documented with time-stamped reports from the tester.
What are the common causes of high insertion loss?
The primary causes are end-face contamination (oil/dust), mechanical misalignment in the adapter, or exceeding the minimum bend radius of the fiber pigtail (typically 30mm).
