DS3800NFLA | Mark IV Fiber Optic Link Adapter Module

Description

Product Introduction

Inter-cabinet fiber links need a clean termination point. The DS3800NFLA is that point—a link adapter board that sits between the Mark IV backplane and the fiber optic transceiver boards, handling signal conditioning and cable termination for inter-cabinet communication. You’ll find these in multi-cabinet installations where the fiber plant needs a structured interface rather than direct connections to the transceiver boards.

The board plugs into the Mark IV backplane and provides a terminated, conditioned interface for fiber optic links—essentially a patch panel on a PCB. Compare this to the NFIA and NFIB interface boards. The NFLA is specifically for link adaptation between cabinets, while the NFIA and NFIB are general-purpose I/O interfaces. This board was typically used when the fiber plant was complex enough to require a dedicated adapter for each inter-cabinet link.

Key Technical Specifications

Compatible Replacement Models

Frequently Asked Questions (FAQ)

What does the NFLA board do?
The NFLA is a fiber optic link adapter—it provides a terminated, conditioned interface for fiber optic links between Mark IV cabinets. Think of it as a patch panel on a PCB that sits between the backplane and the fiber transceiver boards. It handles level conversion and buffering.

What’s the difference between the NFLA and the NFIA/NFIB?
The NFLA is specifically for link adaptation between cabinets—inter-cabinet communication. The NFIA and NFIB are general-purpose I/O interface boards that can be used for various fiber optic I/O connections. In practice, they’re often interchangeable, but the NFLA was typically used for dedicated link applications.

Can I use the NFLA with the long-haul fiber boards?
The NFLA was designed for the standard Mark IV fiber system. It may not be compatible with long-haul boards that use different wavelengths or coherent detection. Check your system configuration before mixing board types.

Can I hot-swap this board?
No. Mark IV backplanes are not hot-swappable. Power down the cabinet, lock out the breaker, and wait 60 seconds before removing or installing the board.

What’s the most common failure mode on the NFLA?
We’ve serviced about a dozen NFLA boards. The most common failure is the signal conditioning circuitry—it can degrade over time, causing intermittent link errors. The second most common failure is the edge connector—corrosion from humidity. The board is repairable.

What’s your warranty and lead time?
We stock the NFLA in limited quantities. Lead time is 1-2 business days. We offer a 1-year warranty. We test every board with a 24-hour burn-in and a diagnostic verification. The test report is included.

Is this board compatible with the Mark VIe?
No. This board is for Mark IV systems only. The backplane architecture is different.

TRICONEX 4351B
ABB SYN5202
HIMA F60 MI 24 01