DS3800NISA1B1B | Mark IV Isolated Serial Adapter Module

Description

Product Introduction

The DS3800NISA1B1B is an enhanced version of the isolated serial adapter board—the NISA with extended temperature range, conformal coating, and improved diagnostics. The suffix tells the story: the first “1” indicates a hardware revision with improved isolation and signal conditioning. The “B” specifies extended temperature range components. The second “1” adds enhanced diagnostic features (configuration verification, serial link quality monitoring). The final “B” is the conformal coating with humidity-resistant components. This board was designed for installations where extended temperature range, environmental protection, and better diagnostic feedback were needed for isolated serial applications.

The conformal coating provides protection against humidity and dust. The extended temperature range means the board can operate in uninsulated shelters or outdoor cabinets. Compare this to the base DS3800NISA (standard temperature range, no diagnostics, no coating). The 1B1B gives you the same basic functionality with significant improvements in reliability and diagnostic capability.

Key Technical Specifications

Compatible Replacement Models

Frequently Asked Questions (FAQ)

What’s the difference between the NISA1B1B and the base NISA?
The 1B1B adds enhanced diagnostics (configuration verification, serial link quality monitoring), extended temperature range (-40°C to +70°C vs 0 to 60°C), and conformal coating. The base NISA has basic link status only.

What’s the “Serial Activity” LED?
The Serial Activity LED indicates traffic on the serial link. The board monitors the TX and RX lines. Green means data is flowing. Red means a communication error—check the serial device and cabling.

Do I need to upgrade my DMP firmware for the enhanced diagnostics?
The enhanced diagnostics require DMP firmware v3.0 or later. Older firmware won’t recognize the diagnostic registers. We can provide the firmware EPROMs if you need them.

What’s the communication protocol for this board?
The communication protocol depends on the specific configuration. The NISA supports RS-232 and RS-485 depending on the jumper and component configuration. Check the board’s label or your system documentation for the exact protocol.

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 NISA1B1B 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.

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