The GE F3020-904 (also identified by part numbers 7000157-904 and 1011337-004) is a ruggedized GEER (GE Event Recorder) specifically engineered for the demanding environment of locomotive operations. Functioning essentially as a “black box” for trains, this device is a critical safety and diagnostic tool. It continuously monitors and records a vast array of locomotive parameters, including speed, brake pipe pressure, throttle position, and GPS data, ensuring compliance with Federal Railroad Administration (FRA) regulations and providing vital data for accident reconstruction and maintenance analysis.
Product Parameters and Technical Specifications
The GEER system is designed to exceed standard industrial specifications to survive high-vibration and extreme temperature conditions.
- Model Number: F3020-904 / 7000157-904
- Part Number: 1011337-004
- Storage Type: Solid-state non-volatile memory (designed for high-impact survivability)
- Input Channels: Multiple digital and analog inputs for locomotive subsystems
- Communication: Ethernet, RS-232, and USB for high-speed data offloading
- Operating Voltage: 74V DC nominal (Standard locomotive battery power)
- Standards Compliance: FRA Type I and Type II event recording requirements
Product Datasheet Summary
The datasheet for the F3020-904 emphasizes its “Crashworthy” memory module, which is encased in a hardened shell to protect recorded data against fire, impact, and immersion. The unit features an integrated processor that handles real-time data compression and timestamping. It is capable of recording hundreds of hours of high-resolution data before looping. The GEER software interface allows maintenance teams to visualize trip data in graphical formats, facilitating fuel economy analysis and operator performance evaluations.
Country of Origin
This precision railroad electronic component is manufactured in the USA, reflecting GE Transportation’s (now Wabtec) history of North American locomotive engineering.
Application Fields
The GEER F3020 series is standard equipment for heavy-haul and transit rail:
- Freight Locomotives: Used on Tier 4 and legacy GE Evolution Series (ES44AC/DC) units.
- Commuter Rail: Ensuring safety compliance for passenger transport locomotives.
- Fleet Management: Utilizing recorded data to optimize fuel consumption and reduce wear on braking systems.
- Incident Investigation: Providing the definitive record of locomotive status during derailments or collisions.
Product Usage Instructions
- Installation: Secure the GEER unit in the designated electronics cabinet (clean-air compartment). Ensure the vibration-dampening mounts are properly tightened.
- Wiring: Connect the primary 74V DC power harness and the multi-pin sensor input cable. Use shielded cabling for all speed-sensing inputs to prevent signal noise.
- Initialization: Use a laptop with GEER configuration software to synchronize the internal clock with GPS time and verify all sensor inputs are reporting correctly.
- Data Extraction: Periodically offload data via the front-panel USB or Ethernet port for analysis. The unit will automatically overwrite the oldest data once the memory is full.
Technical Description
The F3020-904 operates by polling the locomotive’s onboard computer (often the CIO or CCU) via the locomotive’s internal network (ARCnet or Ethernet). It records “discrete” signals (like the horn or bell activation) and “analog” signals (like air brake pressure) at specific intervals. The internal firmware includes error-correction algorithms to ensure that even if the locomotive loses power suddenly, the final seconds of data are successfully committed to the hardened memory module.
Q&A – Frequently Asked Questions
Q: Is the F3020-904 compatible with non-GE locomotives? A: While primarily designed for GE Transportation units, the GEER system can be integrated into other fleets provided the appropriate interface cables and signal mapping software are used.
Q: What is the difference between this and a LER (Locomotive Event Recorder)? A: GEER is simply GE’s specific brand/model of a LER. They serve the same regulatory and functional purpose.
Q: Does it record video? A: The F3020-904 is primarily a data recorder. However, it often works in tandem with a GE “Crashevident” camera system, where the GEER provides the data overlay for the video footage.
Q: Where can I find more GE Locomotive parts and GEER modules? A: You can find the GE F3020-904 and other rail-certified components through specialized industrial and locomotive equipment suppliers.
Recommended Similar Models
- GE F3020-903 – A similar version with different memory capacity or software configuration.
- Wabtec TrainLink – A modern equivalent used in integrated rail safety systems.
- GE 7000157-901 – Earlier iteration of the GEER series for older locomotive models.
- GE 1011337-002 – Alternative part number variant for specific transit authority requirements.
- Bach-Simpson LER – A common alternative event recorder often compared with GEER systems.


