GE IS200HFPAG2ADC | Mark VI Front Panel Board | New Surplus

Description

Product Introduction

This IS200HFPAG2ADC is a factory-sealed front panel display controller from GE’s legacy Mark VI turbine control platform. It is the undisputed pinnacle of Mark VI HMI hardware—combining the high-resolution display capability and dedicated graphics co-processor of the G2 series, the display EMI filtering of the “E” suffix boards, and the expanded 16×8 keypad matrix with ±15 kV ESD protection of the “C” suffix boards. Every upgrade GE ever developed for the Mark VI front panel is present in this single board.

The “ADC” suffix on a G2 board tells you this is the most feature-rich configuration ever produced. “A” is the base hardware revision, “D” indicates the 1 MB video RAM and display EMI filtering (common-mode chokes on the display cable), and “C” indicates the expanded 16×8 keypad matrix (128 keys) with ESD protection. This board was never a standard catalog item—it was a custom engineering configuration for high-end turbine control rooms with large-format high-resolution displays, full numeric/function keypads, and installations with significant electrical noise. If your system runs this board, you have the best front panel hardware GE ever built. Replacement boards are exceptionally rare.

Key Technical Specifications

Key Selling Points & Differentiators

• The Ultimate Mark VI HMI Board – Every Upgrade in One Package: High-resolution G2 graphics + display EMI filtering + 128-key matrix with ESD protection. No other Mark VI front panel board has ever combined all three. This is the board you buy when you need the absolute best possible operator interface and the highest reliability in the harshest electrical environments.
• High-Resolution Display with Hardware Acceleration: Drives VGA or higher resolution LCD panels with 256 colors and anti-aliased graphics. The dedicated co-processor handles all rendering—page transitions are instantaneous, animations are smooth, and the main CPU stays fully dedicated to turbine control loops. Standard G1 boards can’t touch this performance.
• Display EMI Filtering: Common-mode chokes on the display ribbon cable eliminate flicker, snow, and horizontal bars caused by motor drives, VFDs, generator synchronizers, and large contactor switching. Your operators see a clean, stable display even during the noisiest electrical events.
• 128-Key Matrix with Full ESD Protection: Supports up to 128 keys—full numeric keypads, soft-key rows, custom function arrays—with ±15 kV ESD suppression on every matrix line. No dead keys from static discharge. This is the most robust keypad interface GE ever built, now paired with G2 graphics and EMI filtering.
• Enhanced EMI Shielding and Ground Planes: Additional layers of shielding and ground planes protect the sensitive graphics processor and high-speed display signals from electrical noise. This board is engineered for the harshest turbine control environments.
• 100% Live-Tested with Combined Stress: Every G2ADC runs the most rigorous test sequence in our facility: full resolution/color pattern test, graphics processor performance verification, conducted EMI injection on the display cable, and ESD injection at ±15 kV on all keypad lines—simultaneously. We run this combination stress test for 8 hours at 55°C. If it survives our rig, it will outperform any other Mark VI HMI board in your cabinet.

Frequently Asked Questions (FAQ)

Q: What makes this G2ADC different from the G2ACB board?

A: The G2ACB has the high-resolution graphics, expanded keypad, and ESD protection—but no display EMI filtering. The G2ADC adds the common-mode chokes on the display cable to eliminate video noise from electrical interference. If your display has flicker, horizontal bars, or snow during motor starts or generator switching, the G2ADC specifically fixes that while keeping all the other upgrades.

Q: What makes this G2ADC different from the G1 ADC board?

A: The G1 ADC uses a standard-resolution display controller with software-rendered graphics. The G2ADC has a dedicated graphics co-processor, higher resolution support, and 256-color capability. The keypad interface (16×8 with ESD) and display EMI filtering are the same on both. The G2ADC is for high-resolution LCD panels; the G1 boards are for standard-resolution panels. They are not interchangeable.

Q: Will this board work with my existing G1 display cable?

A: No—the G2 series uses different signal timing and pin assignments on the 40-pin ribbon cable. Using a G1 cable on a G2 board will result in no display or corrupted video. Your cabinet should already have the correct G2 cable if it originally shipped with a G2 board. If you’re upgrading from G1 to G2, you’ll need a new cable. We can source the correct cable for your panel.

Q: I have a standard 64-key panel. Will this board work?

A: Yes—the G2ADC defaults to 8×8 mode if it detects fewer rows populated. It’s fully backward-compatible with standard 64-key panels. The expanded keypad support is available for future upgrades; you don’t have to use it immediately. If you later add a larger keypad, the board supports it without hardware changes—just enable the additional keys in ToolboxST.

Q: Can I use this board with a color LCD?

A: Yes—the G2ADC is specifically designed for color LCDs, supporting up to 256 colors at VGA resolution or higher. The display EMI filtering also ensures that color signals remain clean and stable in high-noise environments. For custom animated graphics, complex trend displays, or large-format panels, the G2ADC provides the performance, color depth, and noise immunity you need.

Q: Does this board have ESD protection on the keypad lines?

A: Yes—the “C” in ADC indicates the expanded keypad matrix with ±15 kV ESD protection on every line. This is the same robust protection found on the G1 ACB/ADC boards and the G2ACB. If you’ve had static-related keypad failures, this board addresses that issue while also giving you high-resolution graphics, display EMI filtering, and expanded keypad support.

Q: Will this board work in a Mark VIe system?

A: No. Mark VIe uses an Ethernet-based HMI architecture, not VME. This board is VME-based and will not physically fit in a Mark VIe rack. Attempting to insert it will damage the backplane. If you’re on Mark VIe, you need the IS220 series display controller.

Q: How do you test the G2ADC boards during QA?

A: This is our most rigorous test protocol. We use a Mark VI test rack with a genuine GE high-resolution LCD panel and a 128-key keypad simulator. The test sequence includes: (1) VME bus handshake verification, (2) full display pattern test—all 256 colors, all pixels, at full resolution for 8 hours, (3) page transition speed test to verify graphics processor performance, (4) full 16×8 keypad matrix scan with ESD injection at ±15 kV on every line, (5) conducted EMI injection on the display cable during the entire test, and (6) 8-hour thermal soak at 55°C with all stressors running simultaneously. If any pixel glitches, any keypress is missed, or any display noise appears, the board is rejected. Our pass rate on G2ADC boards is about 92%—the 8% we reject usually have marginal solder joints on the choke components. We do not compromise on this board.

Q: Does this board store any turbine configuration or alarm data?

A: No—the video RAM, graphics processor registers, and EMI filter components are all passive or volatile. All display configuration and alarm messages are loaded from the Mark VI main CPU during boot. Swapping this board does not affect logs, setpoints, or tuning parameters. No backup or restore required.

Q: What’s the warranty on this board?

A: 12 months replacement warranty from ship date. These boards are obsolete and no longer manufactured. If it fails under normal operating conditions (indoor environment, voltage within spec, temperature within 0–55°C) during the warranty period, we replace it from our remaining stock or issue a full refund. No restocking fees. Given the rarity of this board, we will do everything possible to support you if an issue arises.

Q: How many G2ADC boards do you have? Should I buy spares?

A: We have fewer than 5 units remaining in our entire inventory. This is the rarest of all Mark VI HFPAG boards—a custom engineering configuration that was never produced in volume. Most sites with G2 panels use the standard G2A (64 keys, no ESD, no filtering) or occasionally the G2ACB. The G2ADC with all three upgrades (filtering, expanded keypad, ESD) was essentially a special-order board. If your facility runs this board, you have the best possible hardware—and you are also in the most difficult position for sourcing replacements. We strongly recommend buying a spare if you can. When these are gone, there is no known alternative source anywhere in the industrial surplus market. Volume discounts are available for multiple units (though we have very few to offer).

Q: Can I mix this G2ADC board with older Mark VI CPU or I/O boards?

A: Yes—the G2ADC uses the standard Mark VI VME interface and is electrically compatible with all Mark VI CPU, communication, and I/O boards. No special backplane slots or firmware versions are required. However, the Mark VI CPU must have firmware that supports the G2 series graphics commands (generally v2.0 or higher) and the expanded keypad features (ToolboxST configuration required for keys beyond 64). If you’re replacing a G1 board with a G2 board, you may need to update the CPU firmware. Check your system version before ordering.

Q: My display is blank after installing this board. What should I check?

A: First, verify that your LCD panel is compatible with the G2 series—not all panels support the higher resolution and timing. Second, check that you’re using the correct G2 display cable—G1 cables will not work. Third, verify that the Mark VI CPU firmware supports G2 graphics. Fourth, check that the EMI filter components on the board are not physically damaged (rare, but possible during shipping). If all of these are correct and the display remains blank, the board may have failed during shipping. Contact us immediately and we’ll arrange a replacement or troubleshooting support. We test every board before shipping with the full stress protocol, but shipping damage can occasionally occur. We stand behind every board we ship.

Q: I see you offer a volume discount. How many boards do I need to buy to qualify?

A: Given our extremely limited stock (fewer than 5 units), we can offer a discount on the purchase of 2 or more boards. Contact us directly for a quote—we’re flexible, especially for customers who recognize the criticality of this board and want to secure a spare. We’d rather see these boards go to facilities that genuinely need them than sit on our shelf.

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