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The GE DS3800XEXA is an Extender Card for the GE Speedtronic Mark IV turbine control system. It’s not a functional board in the traditional sense; instead, it’s a specialized tool used for maintenance and troubleshooting.
An extender card plugs into a system’s backplane and holds another card. This allows the second card to be positioned outside of the main cabinet while remaining electrically connected to the system. This makes it easier for technicians to take measurements, probe test points, and diagnose issues on a live circuit board without having to remove it from the system.
Key Functions & Features
- Enables Live Troubleshooting: The main purpose of the DS3800XEXA is to allow technicians to test a card while it’s powered and operating within the system. This is crucial for diagnosing intermittent faults that only appear under specific operating conditions.
- Access to Test Points: By physically extending the card out of the rack, the extender provides easy access to test points, jumpers, and components that would otherwise be difficult or impossible to reach with a multimeter or oscilloscope.
- Protection: It helps prevent accidental shorts or damage to other cards in the rack by providing a stable and isolated platform for the card being tested.
- Part Number: DS3800XEXA
- Series: GE Speedtronic Mark IV
- Function: Maintenance and diagnostic tool
- Application: Used by technicians to test and troubleshoot other control cards in the system.
Related Components
The DS3800XEXA works in conjunction with virtually all other cards in the Mark IV system, as its purpose is to facilitate the testing of those cards. Some examples include:
- Processor Cards: Like the DS3800HCDA.
- I/O Cards: Such as thermocouple, digital, and analog input/output boards.
- Power Supply Cards: For example, the DS3800NTRF.
