Factory-Packaged IS200DSPXH1BDB: Function First

This listing is a factory-packaged, unused IS200DSPXH1BDB — a Digital Signal Processor Control Board (DSPX) built by GE for the EX2100 static excitation control platform, and shared with GE's Innovation Series drive family. On an EX2100 exciter, the DSPX is the primary controller for the bridge and motor regulator functions and for generator field control, which makes it one of the more consequential single points of failure in the excitation cabinet. Note that this board belongs to the exciter's own VME-style rack, not the Mark VI turbine controller's <R>/<S>/<T> racks — it connects to its rack's backplane through a 128-pin, 4-row DIN connector. It's sold and searched for alongside Mark VI IS200 turbine boards mainly because EX2100 excitation and Mark VI control almost always ship together on the same turbine-generator.

Under the hood, a digital signal processor running at 60 MHz works with an application-specific integrated circuit (ASIC) that manages custom logic and interface functions. FLASH memory carries the boot loader, application code, configuration parameters, and system history; RAM handles active data and code execution; NVRAM stores nonvolatile data; and a small add-only memory area records the board's revision identity. Communications run over two 5 Mb/s ISBus ports (master or slave capable) plus dedicated TTL serial ports for a configuration tool and a programming board. The faceplate is limited to STATUS and FAULT LEDs and DSP emulator / Engineering monitor connectors — there's no field-adjustable hardware on the board at all.

Why a Sealed Spare Doesn't Skip the Diagnostic Step

Having a factory-packaged board on the shelf is exactly the right way to shorten an outage, but it's still worth confirming the failed unit is really the DSPX before installing this one:

• Compare the alarming channel against its redundant partners. Most EX2100 regulators run more than one DSPX, and a single alarming channel often comes down to a configuration or firmware mismatch, not hardware.
• Check the backplane connector and the exciter's power supply board. A partially seated 128-pin connector or a sagging supply rail can look exactly like a processor fault.
• Rule out a communications fault between DSPX channels before assuming the board itself has failed.
• Plan for commissioning time. Even a known-good replacement needs your application code loaded through the exciter's tool port and configuration parameters loaded through the Control System Toolbox — skip that and the new board will fault too.

Once the diagnosis is confirmed, a factory-packaged spare like this one gets you back online without waiting on a repair turnaround.

IS200DSPXH1BDB Part Number, Explained

IS200 is the platform prefix, DSPX is the function code, and H1BDB is the group/revision suffix, where H1 marks the group/generation and BDB marks the exact hardware and artwork revision. When you're stocking spares, match this complete string — not just "DSPX" — since GE does not guarantee interchangeability across every revision. Our GE Speedtronic Part Number Decoder breaks the format down further if you're cross-checking a label.

Related Boards Worth Knowing

Inside the EX2100 rack, the DSPX works alongside the exciter's main I/O board, its power supply board, and the interface card that links multiple DSPX channels together. For legacy Mark IV/Mark V fleets, GE's numbering for this era of hardware moved from DS200 prefixes to the IS200 prefixes used on Mark VI and EX2100 systems; our Mark V vs Mark VI: DS200 to IS200 guide and GE Mark V DS200 Boards Explained article cover that transition. Browse the current lineup in our GE Mark VI IS200 Boards collection or the wider GE Speedtronic Turbine Control Boards collection.

Information to Include in Your Quote Request

• Full part number with suffix: IS200DSPXH1BDB
• Revision from the label, if visible
• Photo of the ID label
• Exciter/turbine model and unit ID
• Critical spares stocking vs. urgent replacement
• Quantity required

Request a Quote

This IS200DSPXH1BDB is original factory packaged, listed as new surplus, and backed by a 1-year warranty (see table below). Pricing is quoted directly rather than published online — submit a Request a Quote and expect a response within 24 hours. We ship worldwide DDP, accept purchase orders, and can support both planned critical-spares programs and urgent breakdown orders.

General Information about the Product
Part Number	IS200DSPXH1B Mark VI IS200
Description	GE IS200DSPXH1B IS200DSPXH1BDB Printed Circuit Board Mark VI NEW
Condition	newSurplusFactoryPackage Original Factory Packaged. With 1 Year Warranty.