GE DS3800HSQD
Product Name: GE Mark IV Low/High-Voltage Sequence Board / Control Module
Product Introduction: The DS3800HSQD is a low/high-voltage sequence board (also referenced in some technical sources as a high-speed quadrature counter board) designed for GE’s Mark IV turbine control system. It is a precision control board for enhancing industrial control system performance.
Detailed content
Technical Specifications:
- Dimensions: 160 × 100 mm
- Weight: ≈ 0.5 kg
- Operating voltage: 24 V DC
- Operating temperature: -40 °C to +85 °C
- Storage temperature: -55 °C to +125 °C
- Compatibility: GE Mark IV series control systems
Functional Features: High-precision control functionality within the Mark IV turbine control platform. (Per alternative technical reference, the “HSQ” designation indicates high-speed quadrature counting with 4 independent encoder channels, each with A/B/Z inputs, 0–10 kHz input frequency per channel, 32-bit position counter per channel, 4× quadrature decoding, and 2500 VAC optical isolation per channel.)
Application Scenarios: GE Mark IV turbine control systems, particularly for sequence control and — where applicable — quadrature encoder position feedback in motion control applications.
Usage Notes: As a Mark IV-series module, it is an obsolete product; new surplus inventory is the recommended procurement channel for guaranteed remaining service life.












