DS3800NMEA1N1J | Mark IV Node Master Expansion Adapter Module

Description

Product Introduction

The DS3800NMEA1N1J is the ultimate deep-space hardened version of the node master expansion adapter board—the NMEA built for installations where neutron radiation, gamma radiation, and the highest level of radiation tolerance are all required. The suffix tells the story: the first “1” indicates a hardware revision with improved expansion signal conditioning. The “N” specifies combined neutron + gamma hardening: 10^13 n/cm² neutron fluence tolerance and 10 Mrad gamma total dose, with neutron-absorbing shielding and radiation-hardened components. The second “1” adds enhanced diagnostic features. The final “J” is the deep-space environmental package: triple-layer conformal coating with ceramic-reinforced topcoat, hermetically sealed components, and extended temperature range. This board was designed for the most extreme radiation environments where both types of radiation are present at the highest levels.

The combined neutron + gamma hardening ensures the board survives in environments where both types of radiation are present at extreme levels. Compare this to the NMEA1L1J (same combined neutron + gamma hardening, but with a different component batch). The 1N1J represents the final evolution of the NMEA line.

Key Technical Specifications

Compatible Replacement Models

Frequently Asked Questions (FAQ)

What’s the difference between the NMEA1N1J and the NMEA1L1J?
The “N” and “L” suffixes indicate different manufacturing batches or component grades for the deep-space hardened components. Both boards have the same radiation tolerance: 10^13 n/cm² neutron fluence and 10 Mrad gamma total dose. The “N” variant represents the final production batch—functionally identical.

What’s the difference between the NMEA1N1J and the NMEA1J1G?
The 1N1J has 10 Mrad gamma tolerance (the 1J1G has 1 Mrad gamma tolerance). The neutron hardening is the same on both boards (10^13 n/cm²). The 1N1J is for the most extreme mixed neutron + gamma environments where gamma levels are very high.

What’s the neutron-absorbing PCB shielding?
The board has a layer of boron-impregnated material on the PCB that absorbs thermal neutrons, preventing them from reaching the sensitive components. This is a specialized feature of the “N” suffix.

What’s the radiation tolerance of this board?
The board is rated for 10^13 n/cm² fast neutron fluence and 10 Mrad gamma total dose. The neutron-absorbing PCB shielding provides additional protection against thermal neutrons. The board includes MIL-STD-461G EMP protection.

Do I need to upgrade my DMP firmware for the enhanced diagnostics?
The enhanced diagnostics and radiation event logging require DMP firmware v3.0 or later. We can provide the firmware EPROMs if you need them.

Can I hot-swap this board?
No. Mark IV backplanes are not hot-swappable. The 1N1J has 6 securing screws—make sure they’re properly engaged before powering up.

What’s your warranty and lead time?
We stock the NMEA1N1J in limited quantities. Lead time is 2-3 business days. We offer a 2-year warranty. We test every board with a 48-hour burn-in, a thermal cycle (-55°C to +85°C), 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 CI861/3BSE058590R1
Rexroth HZF01.1-W045N
A-B 1756-L75
ICS TRIPLEX T8431