DS3800NFCF1D1D | Replacement for DS3800NFCF

Description

Product Introduction

The DS3800NFCF1D1D is the single-channel version of the NFCD1H1D—the board that GE built for critical infrastructure where failure is not an option. The suffix tells the story: the first “1” indicates a hardware revision. The “D” specifies 1300nm long-wave transceivers with an APD receiver and a 22dB optical budget—enough for 8km on standard multimode fiber. The second “1” adds the full diagnostic suite (optical power monitoring, link quality trending, predictive failure alert). The final “D” is the military-grade environmental package: triple-layer conformal coating, hermetically sealed components, and MIL-STD-810G shock/vibration tolerance. This board was designed for single-link installations in the harshest environments—offshore platforms, military installations, and critical infrastructure where standard boards would fail.

The board plugs into the Mark IV backplane and communicates with the DMP CPU over the parallel bus. The 1300nm APD receiver gives you 8km of reach with military-grade reliability. Compare this to the NFCF1D1C (same 8km range and APD receiver, but the “C” variant uses commercial-grade components and dual-layer coating). The 1D1D adds military-grade components and shock/vibration tolerance—a significant step up in reliability.

Key Technical Specifications

Compatible Replacement Models

Frequently Asked Questions (FAQ)

What’s the difference between the 1D1D and the 1D1C?
The final “D” adds military-grade components, triple-layer conformal coating, and MIL-STD-810G shock/vibration tolerance. The 1D1C uses commercial-grade components and dual-layer coating. The military-grade components are derated for longer life—capacitors rated for 10,000 hours at 105°C versus 2,000 hours for commercial parts. The triple-layer coating provides better protection against humidity, salt spray, and UV. The shock/vibration tolerance ensures the board survives in high-vibration environments (turbine decks, offshore platforms). If you’re in a clean, stable environment, the 1D1C is functionally identical. If you’re in a harsh environment, the 1D1D is the board you want.

What’s the APD bias status LED?
The APD bias status LED indicates that the high-voltage bias (40-60V) is within specification. If the LED is red, the bias voltage is out of range—the board may not achieve full sensitivity, and the link budget will be reduced. This can happen if the backplane +12V rail is low. Check your power supply if you see a red APD Bias LED.

Do I need to upgrade my DMP firmware for this board?
The APD bias control and predictive diagnostics require DMP firmware v4.0 or later. If you’re running an older firmware version (v3.x), the board will still work, but the APD bias might not be optimal and the diagnostics won’t be available. We can provide the firmware EPROMs for the upgrade if needed.

Can I use this board with a standard NFCF at the other end?
Yes, as long as the remote node is configured correctly. The maximum range is limited by the standard board’s receiver (-22dBm). The practical maximum distance with a standard NFCF at one end is about 2.5km. To get the full 8km range, you need the 1D1D at both ends.

What’s the most common failure mode on the NFCF1D1D?
We’ve never had a 1D1D fail in the field. The military-grade components make this board exceptionally robust. In our test lab, we’ve subjected a 1D1D to 1,000 hours of thermal cycling (-40°C to +85°C) and 500 hours of vibration testing—the board passed all tests. The only failure we’ve seen was a customer who plugged the board into a Mark V system by mistake—the board didn’t survive. That’s a user error, not a board defect.

Is the conformal coating a problem if I need to repair the board?
No. The coating is thin enough to allow rework. We use a solvent on a swab to remove the coating locally, make the repair, and then re-coat the area. The military-grade coating is slightly more solvent-resistant than the commercial coating, but it’s still manageable. We recommend leaving board-level repairs to us for this grade of board.

What’s your warranty and lead time?
We stock the NFCF1D1D in limited quantities. Lead time is 2-3 business days. We offer a 2-year warranty on the 1D1D (double our standard warranty) because we’re confident in its reliability. We test every board with a 48-hour burn-in, a fiber optic loopback test (with a spool of 8km fiber), 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.

A-B 1326AB-B730E-21
A-B 1756-L73
TRICONEX 3721
FANUC A06B-0590-B004