- HIOA Group 1 input-isolator function
- Microprocessor, multiple EPROM modules, fuses, and test points
- One 34-pin edge connector and four insulated corner mounting holes
DS3800HIOA1C1E is an General Electric Input Isolator Board designed for GE Mark IV Speedtronic turbine-control systems.
It isolates and conditions field-input paths before those signals reach core control electronics, while providing board-level protection and diagnostic access.
Before replacement, verify the full label, receiving position, connector keying, configuration hardware, paired assemblies, and every affected control or feedback path.
Availability, condition, price, and shipping time for DS3800HIOA1C1E are confirmed during quotation.
General Electric DS3800HIOA1C1E Input Isolator Board Manuals, Product Family, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Separates field-input paths from core electronics
- Fuses protect selected board circuits
- Signal conditioning must match the installed Mark IV loop design
- Test points support circuit-level service checks
- EPROM population and microprocessor identity must remain matched
- The 34-pin interface requires correct polarization and seating
- Four insulated corner holes secure the board
- Apply ESD controls whenever the board is handled
- Test affected input loops and alarms after replacement
- Field-input isolation in Mark IV gas-turbine controls
- Sensor-loop conditioning in Mark IV steam-turbine controls
- Input protection and diagnostic service in legacy turbine-control cabinets