Description
🔹 Product Description
The GE DS3800HUMB1B1A is a Universal Memory Board used in the GE Speedtronic Mark IV turbine control system. The HUMB board is designed for memory and configuration functions within compatible control equipment and features a modular connector, retention levers, a reset toggle switch, one red status LED, EEPROM memory devices, and 30 configuration jumpers. The board is associated with the HUMB Universal Memory Board family, with different hardware revisions including DS3800HUMB1B1A and DS3800HUMB1B1B. The complete board number and revision should be matched carefully when selecting a replacement.
🔹 Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | General Electric (GE) |
| Model | DS3800HUMB1B1A |
| Series | Mark IV DS3800 |
| Product Name | Universal Memory Board |
| Functional Type | Memory / Configuration Board |
| Place of Manufacture | USA |
| Product Status | New Surplus / Original |
| Dimensions | Approx. 28 × 20 cm; verify actual unit |
| Weight | Approx. 1 lb / 0.45 kg |
| Memory | EEPROM / Non-volatile Memory |
| Configuration | 30 Jumpers + Reset Switch |
| Discontinued | Yes – Legacy / Discontinued by Manufacturer |
🔹 Key Features
• Designed for GE Speedtronic Mark IV turbine control systems
• Universal Memory Board configuration
• Modular connector for system installation
• Retention levers for secure board installation
• One red indicator LED for memory-operation status
• Multiple EEPROM memory devices
• 30 hardware jumpers for configuration
• Reset toggle switch for maintenance and troubleshooting
• Suitable for legacy turbine control maintenance and replacement
• Compatible only when the complete hardware configuration and revision are matched
🔹 Q&A
Q: What is the DS3800HUMB1B1A used for?
A: It is a Universal Memory Board used in compatible GE Mark IV Speedtronic control systems for memory and configuration functions.
Q: How many jumpers are on the board?
A: The documented HUMB configuration includes 30 hardware jumpers.
Q: What type of memory does the board use?
A: The HUMB family uses non-volatile programmable memory devices; references for this variant identify EEPROM memory.
Q: What does the red LED indicate?
A: The red indicator is associated with memory operations. During a write operation, processing may temporarily pause until the memory operation is completed.
Q: What is the difference between DS3800HUMB1B1A and DS3800HUMB1B1B?
A: They are different hardware variants of the DS3800HUMB Universal Memory Board family. The complete part number and revision should be matched before replacement.
Q: Is this board discontinued?
A: The DS3800HUMB family is identified by aftermarket references as discontinued by the manufacturer and is now treated as a legacy Mark IV component.
Q: What should be checked before installation?
A: Verify the complete part number, revision, jumper positions, memory configuration, connector orientation, and the original Mark IV system configuration before installation.
🔹 Recommended GE Models
- DS3800HUMB1A1A – Universal Memory Board
- DS3800HUMB1B1B – Universal Memory Board
- DS3800HUMA1A1A – Universal Memory Card
- DS3800HUMA1A1B – Universal Memory Card
- DS3800HUMA1B1C – Universal Memory Card
- DS3800HXPA1E1D – Memory Expander Card
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- DS3800HXPD1B1A – CPU Expander Card
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- DS3800HMPF – Microprocessor Board
- DS3800HVDB1G1D – Video Driver Card
- DS3800HSQE1E1E – Sequencer Board
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