DS3800NISA | Replacement for DS3800NISA

Description

Product Introduction

The DS3800NISA is an isolated serial adapter board for Mark IV systems—the “I” in the suffix indicates isolated functionality, the “S” indicates serial, and the “A” is a manufacturing revision. This board provides isolated serial communication connectivity for field devices and remote equipment in turbine control applications. It was used in installations where serial devices needed to be interfaced with the Mark IV control system with electrical isolation to protect the backplane.

The board plugs into the Mark IV backplane and provides an isolated serial interface. Compare this to the DS3800NSIA (another isolated serial interface board) or the DS3800NICA (current interface board). The NISA is specifically for isolated serial communication applications where isolation and protection are critical.

Key Technical Specifications

Compatible Replacement Models

Frequently Asked Questions (FAQ)

What does the NISA board do?
The NISA is an isolated serial adapter board for Mark IV systems. It provides isolated serial communication connectivity for field devices and remote equipment.

What’s the difference between the NISA and the NSIA?
The NISA and NSIA are both isolated serial interface boards. They typically have different serial configurations (RS-232 vs RS-485) or different isolation ratings. Check your system documentation for the specific configuration requirements.

What’s the isolation rating of this board?
The isolation rating depends on the specific configuration. The NISA provides electrical isolation to protect the Mark IV backplane from the serial device.

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 NISA?
We’ve serviced about a dozen NISA boards. The most common failure is the serial interface circuitry—it can degrade over time, causing communication 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 NISA 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.

SCHNEIDER UNC-520-2-N
GE IC698CMX016
GE 469-P5-HI-A20-E SR469-CASE
Pioneer Magnetics PM3326B-6-1-2-E