Core Features

1. ADC channel, offering a sampling rate of 250 MSPS and 16-bit conversion precision, suitable for high-precision data acquisition and signal processing.

2. DAC channel, supporting a sampling rate of 500 MSPS with 14-bit precision, widely used for signal output and waveform generation.

3. Coherent fading and polarization fading noise suppression technology, significantly enhancing signal quality to ensure efficient and accurate data acquisition even in extreme signal environments.

4. Spatial resolution better than 5 meters, providing exceptional positioning accuracy in complex monitoring environments.

5. 4 GB DDR4 memory, enabling high-speed data storage and processing, supporting large-scale data acquisition and buffering.

6. Supports PCIe 3.0 x8 interface with bandwidth up to 8 GB/s, facilitating high-speed, continuous data transfer.

7. External trigger input and output for synchronization with external devices, applicable in various experimental and monitoring scenarios.

8. Supports multiple acquisition modes and flexible gain adjustment to meet different signal strengths and acquisition requirements.

Noise Suppression and Signal Processing

The standout feature of the DAS-U250 is its coherent fading and polarization fading noise suppression technology. This technology effectively reduces signal fading and interference in complex, high-noise environments, thereby improving the accuracy and reliability of data acquisition. Polarization fading noise suppression is particularly useful in environments with strong electromagnetic interference, such as deep-sea or underground exploration, ensuring the system maintains exceptionally high signal quality under various conditions.

Furthermore, the system enables high-resolution spatial data acquisition with a spatial resolution better than 5 meters, meeting the demands for high-precision position monitoring. This provides ideal technical assurance for applications requiring meter-level or even centimeter-level precision, such as underground pipeline monitoring and seismic wave propagation analysis.

SDK Development Framework

The DAS-U250 is equipped with a powerful SDK development framework, allowing users to perform flexible custom development and deep integration. The SDK provides the following core functional modules:

1. Parameter processing and acquisition control module: Supports user-defined parameters such as sampling rate, gain, and trigger mode, flexibly adapting to different application scenarios.

2. High-speed data transmission module: Supports high-speed data transfer via the PCIe 3.0 x8 interface, ensuring stable system operation in high-bandwidth environments.

3. Noise suppression and signal processing module: Integrates coherent fading and polarization fading noise suppression technologies, enabling users to define custom noise suppression strategies based on different acquisition environments to optimize signal quality.

4. Concurrent processing and memory management module: Supports parallel data processing, suitable for large-scale data acquisition. The memory management system ensures efficient utilization of DDR4 storage to avoid bottlenecks.

5. Graphical display and data analysis module: Integrates advanced data visualization functions such as time-domain signal display, FFT spectrum analysis, and waterfall plots, helping users analyze acquired signals more intuitively.

Host Computer Software Functions

The host computer software provides rich control functions, enabling users to intuitively operate and monitor the data acquisition process. The main features include:

1. Sampling parameter input and control: Supports dynamic input and real-time adjustment of parameters such as sampling rate, gain, and trigger mode to adapt to various monitoring needs.

2. Real-time data acquisition and display: Real-time display of acquired time-domain waveforms, spectrum diagrams, and waterfall plots, aiding users in timely data analysis.

3. Noise suppression and gain control: Supports software settings for noise suppression levels and gain parameters, allowing users to fine-tune acquisition effectiveness based on different environments.

4. Signal output and control: Controls signal output via DAC, supporting waveform generation, signal amplitude, and frequency adjustment for various application scenarios.

5. External trigger control: Supports external trigger control for synchronization with external devices, enabling complex signal acquisition tasks.

6. Real-time data storage and playback: Supports real-time storage of acquired data, with capabilities for data playback and post-analysis.

System Services

The DAS-U250 provides comprehensive system services to help users get started quickly and develop efficiently:

Software System Installation and Configuration: Provides easy-to-use installation packages and configuration tools for quick system setup.

Driver Adaptation and Support: Supports Windows and Linux operating systems, ensuring broad system compatibility.

FPGA Development Environment Support: Provides Vivado FPGA development tools, supporting users in customizing FPGA logic to develop signal processing modules tailored to specific needs.

QT Host Computer Development Environment: Supports a C++ development framework based on QT, assisting users in developing efficient host computer applications for data visualization and real-time control.

Concurrent Processing and GPU Acceleration: Provides high-performance parallel computing support, enhancing system processing capabilities through CUDA and multi-threading technologies to meet the demands of large-volume data acquisition and real-time processing.