Bench and datasheet benchmarks for high-density MT receptacles typically report insertion loss in the low-tenths of dB per ferrule and >1,000 mating cycles; those metrics are central when specifying AV87-15R4AFN for rugged comms and avionics. This report delivers a compact, engineer-friendly spec summary: mechanical and optical/electrical specifications, environmental and reliability performance, exact pinout mapping, plus installation, integration and troubleshooting guidance.
Mechanical & Physical Specifications
| Parameter | Value / Specification | |
|---|---|---|
| Part Number | AV87-15R4AFN | |
| Form Factor | 4-MT (4-plex) VITA-187 Style | |
| Total Fiber Count | Up to 48 (4 x MT12) | |
| Shell Material | Electroless Nickel Plated Aluminum | |
| Mounting Type | Wall-Mount Flange | |
| Durability | >1,000 Mating Cycles |
| Ferrule ID | Fiber Channels | Typical Application |
|---|---|---|
| MT-A | 1 - 12 | Primary Data Link (TX/RX) |
| MT-B | 13 - 24 | Secondary / Redundant Link |
| MT-C | 25 - 36 | System Monitoring / Telemetry |
| MT-D | 37 - 48 | Expansion / Auxiliary Signals |
Field Integration FAQ
What is the fiber capacity of the AV87-15R4AFN?
It is a 4-plex configuration, meaning it houses four MT ferrules. In a standard 12-fiber MT array setup, this provides a total of 48 fiber channels in a single compact receptacle shell.
What are the typical optical loss specifications?
Insertion loss (IL) is generally maintained in the low-tenths of a decibel (0.2 dB to 0.5 dB) per ferrule. This performance is contingent on using clean, high-quality MT mating ferrules and proper alignment pins.
Is the AV87-15R4AFN suitable for avionics?
Yes. The shell construction and MT interface are designed specifically for ruggedized environments, meeting typical vibration, thermal cycling, and shock requirements for airborne communication systems.
How is the pinout mapped for the 4-MT arrangement?
The receptacle follows a standard quadrant mapping (A, B, C, D). For a 48-fiber system, MT-A handles fibers 1-12, MT-B 13-24, MT-C 25-36, and MT-D 37-48. Always verify keying orientation (Key Up/Key Down) to ensure polarity consistency.
Note: Always confirm specific flange dimensions and finish codes (e.g., Electroless Nickel vs. Cadmium) with the latest revision of the technical drawing prior to panel fabrication.
