DS3800DOWE1B - High Frequency Power Amplifier Motherboard

SPECIFICATIONS:

Part No: DS3800DOWE1B
Manufacturer: General Electric
Series: Mark IV
Product Type: High Frequency Power Amplifier Motherboard
Operating Voltage: +5V DC
Frequency Range: Up to 100 kHz
Dimensions: 13.528 x 8.466 x 3.820
Operating Temperature: 0°C to +70°C
Weight: 5 kg
Country of Origin: USA
Availability: In Stock

FUNCTIONAL DESCRIPTION:

DS3800DOWE1B is a High Frequency Power Amplifier Motherboard manufactured and designed by General Electric and is part of the Mark IV Series used in GE Speedtronic gas turbine control systems. The HFPA motherboard functions as a signal interface and distribution platform between turbine field devices and the Mark IV control processors. It processes high-frequency analog signals such as LVDT feedback, speed pickup waveforms, pressure sensor outputs, and fuel valve positions. The motherboard provides signal routing, amplification, isolation, and buffering. Daughter boards installed on the motherboard perform gain control, filtering, and voltage conversion tailored to specific turbine applications. The board is built on a high-grade FR4 or equivalent PCB substrate with a multilayer design optimized for noise immunity and high-speed signal propagation. Separate analog and digital grounds ensure signal integrity. EMI suppression techniques, including ground planes, decoupling capacitors, and shielding, are implemented as standard.

INSTALLATION:

The edge connectors are keyed to prevent incorrect orientation, and once the board is seated, it should be fastened using screws or card retainers to avoid displacement due to vibration. After the motherboard is secured, the appropriate daughter cards should be installed by aligning their pin connectors and gently pressing them into place. Connection integrity should be verified with a multimeter or continuity tester before system reactivation. Once powered on, the system may require calibration routines or signal checks through the Mark IV interface to ensure full functionality.

OPERATION:

The HFPA motherboard facilitates the continuous transmission, amplification, and conditioning of analog control signals in real-time. It ensures minimal phase lag and high fidelity in closed-loop turbine control applications. Signals are routed to and from the CPU, I/O cards, and external sensors with minimal distortion. The motherboard supports diagnostic monitoring via test points and onboard indicators. Any signal faults, temperature anomalies, or connector failures can be isolated through GE’s turbine control diagnostic routines. System software logs HFPA signal quality and alerts maintenance teams during deviations.

WOC offers the largest inventory of OEM replacement parts for GE Speedtronic Control Systems. We also provide expert repair services for faulty boards and supply both unused and refurbished boards, each backed by a reliable warranty. Our team of experienced professionals is available 24/7 to support all your OEM and automation requirements. For inquiries about pricing, availability, or repair services, please contact us via phone or email. We’re here to help you keep your systems running smoothly.

FREQUENTLY ASKED QUESTIONS:

What is the function of the HFPA motherboard?

The HFPA motherboard acts as a base platform that provides power distribution, signal routing, and electrical isolation for daughter cards responsible for high-frequency analog signal amplification and conditioning in GE Mark IV turbine controls.

What types of signals are processed by the HFPA motherboard?

It handles both differential and single-ended analog signals from turbine sensors such as LVDTs, speed pickups, and pressure transducers, within frequencies typically up to 100 kHz.

What should I check if the HFPA motherboard is not powering up?

Verify that the +5V and ±15V power supplies from the Mark IV system are present and stable at the motherboard’s input terminals. Check for blown fuses, faulty wiring, or loose connectors. Use a multimeter to confirm voltage levels before proceeding.