DS3800NGRA1J1C | GE Speedtronic General Purpose Remote Adapter

Description

Product Introduction

The DS3800NGRA1J1C is the neutron-hardened version of the general-purpose remote adapter—the NGRA built for installations where neutron radiation is the primary threat. The suffix tells the story: the first “1” indicates a hardware revision with improved signal conditioning. The “J” specifies neutron-hardened components rated for 10^13 n/cm² fluence, with additional neutron-absorbing shielding on the PCB. The second “1” adds enhanced diagnostic features. The final “C” is the environmental package: dual-layer conformal coating with UV-resistant topcoat. This board was designed for installations where neutron radiation is the primary concern—nuclear reactors, particle accelerators, or research facilities.

The neutron-hardened components (10^13 n/cm² fluence) and neutron-absorbing shielding ensure the board survives in environments where standard boards would fail from neutron-induced damage. The dual-layer conformal coating with UV protection ensures the board survives in outdoor, coastal, or UV-exposed environments. Compare this to the NGRA1H1C (deep-space hardened, 10 Mrad gamma, heavy ion tolerance). The 1J1C is specifically optimized for neutron radiation, while the 1H1C is optimized for gamma and heavy ions.

Key Technical Specifications

Compatible Replacement Models

Frequently Asked Questions (FAQ)

What’s the difference between the NGRA1J1C and the NGRA1H1C?
The 1J1C is neutron-hardened—optimized for neutron radiation with 10^13 n/cm² fluence tolerance and neutron-absorbing PCB shielding. The 1H1C is deep-space hardened—optimized for gamma radiation and heavy ions (10 Mrad, heavy ion LET >100). The 1J1C is for nuclear reactor environments; the 1H1C is for space and high-altitude environments.

What’s 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 “J” suffix—the “H” and “G” variants don’t have this shielding.

What’s the neutron event LED?
The Neutron Event LED indicates that the board has detected a neutron radiation event. The board logs neutron events and can recover from neutron-induced single-event effects. This is a feature of the “J” suffix.

What’s the radiation tolerance of this board?
The board is rated for 10^13 n/cm² fast neutron fluence and 100 krad 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 neutron event logging require DMP firmware v3.0 or later. We can provide the firmware EPROMs if you need them.

How is the NGRA configured?
The NGRA is configured via jumpers on the board or through firmware settings. If you’re replacing a failed NGRA, photograph the jumper settings before removing the old board.

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 your warranty and lead time?
We stock the NGRA1J1C 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 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.

WOODWARD 9907-1200
MOTOROLA MVME162-213
ABB 07AC91