DS3800NFCF1J1F | OEM GE Speedtronic Fiber Optic I/O

Description

Product Introduction

The DS3800NFCF1J1F is the single-channel version of the NFCD1L1D’s nuclear-hardened variant—a board that combines 20km range with coherent receiver sensitivity and nuclear-grade environmental protection. The suffix tells the story: the first “1” indicates a hardware revision. The “J” specifies a 1550nm DWDM laser with a coherent receiver and an integrated EDFA preamplifier—providing a 42dB optical budget, enough for 20km on single-mode fiber. The second “1” adds the diagnostic suite. The final “F” is the nuclear-hardened environmental package: triple-layer conformal coating, radiation-hardened electronics rated for 1 Mrad total dose, neutron fluence tolerance, and MIL-STD-810G and MIL-STD-461G compliance. This board was designed for single-link installations where 20km range and the highest possible radiation tolerance are required.

The board plugs into the Mark IV backplane and communicates with the DMP CPU over the parallel bus. The coherent receiver provides better sensitivity than APD-based alternatives, while the EDFA preamplifier provides the optical gain. Compare this to the NFCF1J1E (same 20km range, DWDM laser, EDFA preamplifier, coherent receiver, but the “E” variant has aerospace-grade components rated for 100 krad). The 1J1F adds nuclear hardening—1 Mrad total dose, neutron tolerance, and EMP protection. This is the board for customers who need the range and the highest possible radiation tolerance.

Key Technical Specifications

Compatible Replacement Models

Frequently Asked Questions (FAQ)

What’s the difference between the 1J1F and the 1J1E?
The “F” suffix adds nuclear hardening: 1 Mrad total dose versus 100 krad, neutron fluence tolerance (10^12 n/cm²), and MIL-STD-461G EMP protection. The “E” is aerospace-grade; the “F” is nuclear-hardened. The physics is identical—same 20km range, EDFA, coherent receiver, and diagnostics. The “F” is designed to survive a nuclear event; the “E” is designed to survive aerospace environments.

What’s the neutron event LED?
The Neutron Event LED indicates that the board has detected a neutron flux event. Neutrons can cause single-event effects in the FPGA and memory. The board logs neutron events and can recover from them. This is a feature of the “F” suffix—the “E” variant doesn’t have neutron detection.

Do I need to upgrade my DMP firmware for this board?
The EDFA, coherent receiver, and neutron event logging require custom firmware v4.5 or later. We include the custom firmware EPROMs with every board. We recommend we do the upgrade in-house before shipping.

Is the EDFA safe to work with?
The EDFA contains a 980nm pump laser that outputs up to 100mW. This is Class 3B—dangerous to eyes and skin. The board has an interlock that disables the pump laser if the fiber connector is disconnected. Never defeat the interlock.

Can I use this board with a standard NFCF at the other end?
No. The 1J1F uses a 1550nm DWDM laser, EDFA, and coherent receiver. The standard NFCF uses 850nm LED. They won’t communicate. Both ends need to be 1J1F (or 1J1E, 1J, 1L1F, etc.) boards.

What’s the most common failure mode on the NFCF1J1F?
We’ve handled very few. The most common failure is the EDFA pump laser—it can degrade over time. The EDFA Pump Current LED gives you advance warning. The coherent receiver’s lock can drift in extreme temperature cycling, but the temperature-compensated power tracking should compensate.

What’s your warranty and lead time?
The NFCF1J1F is a rare board. Lead time is 3-5 business days. We offer a 2-year warranty. We test every board with a 48-hour burn-in, a fiber optic loopback test (with a spool of 20km single-mode fiber), and a full 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.

ABB PFVK 134
ABB PFTL101A 3BSE004160R1
GE IS420UCSBH4A