16-Channel Dynamic Signal Acquisition Card Based on FPGA+AD+PXIe Bus Architecture

• Standard 3U PXIe Specification
• Onboard FPGA Real-time Processor: XCKU060-2FFVA1517I
• Onboard 1 set of DDR4 SDRAM high-speed data buffer
• Supports x8 PCIe Host Interface, System Bandwidth 5 GByte/s
• Supports 1-channel RJ45 Gigabit Ethernet Interface
• Supports 2-channel RS485 Interfaces

A high-performance 16-channel high-precision dynamic signal acquisition card based on PXI Express bus architecture. This card is specifically designed for sound and vibration applications. A single board features 16 synchronous analog input channels with 24-bit resolution, and the maximum sampling rate per channel can reach 150 KSPS. Each channel integrates an independent IEPE excitation source, enabling signal conditioning for accelerometer sensors and microphones. It supports AC/DC coupling, can be independently configured via software, and supports zero-point calibration. Onboard programmable low-pass filters effectively reduce high-frequency noise and minimize aliasing. This card offers flexible channel configuration. For multi-channel dynamic acquisition applications, it can achieve synchronous acquisition across multiple cards within a PXIe chassis, and also synchronous acquisition across multiple chassis. It is suitable for multi-channel dynamic signal acquisition scenarios such as dynamic structural testing, sound, and vibration measurement.

Functional Block Diagram

Technical Specifications

• Onboard FPGA Real-time Processor: XC7K325T-2FFG900I;
• Host Interface Specifications:
  1. Complies with PXIe standard, supports PCI Express 2.0 specification;
  2. Supports PCIe Gen2 x8@5Gbps/lane;
  3. PCIe Bi-directional DMA Transfer Bandwidth: 3.2 GByte/s;
• AD Interface Specifications:
  1. Analog Channels: Max 16 channels per board;
  2. Resolution: 24-bit;
  3. Sampling Rate: Max 150 KSPS;
  4. Analog Input Voltage Range: -10V~+10V;
  5. Excitation Current: 4mA;
  6. Total Harmonic Distortion (THD): 98dB;
• Dynamic Storage Performance:
  1. Storage Bandwidth: 64-bit, DDR3 SDRAM, 500MHz operating clock;
  2. Storage Capacity: Max 4 GByte DDR3 SDRAM;
• Other Interface Features:
  1. The card features synchronous trigger functionality, enabling multi-channel synchronization and inter-board synchronization;
  2. 2 RS485 interfaces, 4 LVTTL inputs, 4 LVTTL outputs;
  3. Onboard 1 FRAM memory, 1 BPI Flash;
• Physical and Electrical Characteristics
  1. Card Dimensions: 100 x 160mm
  2. Card Power Supply: 1.5A max@+12V (±5%)
  3. Cooling Method: Metal conduction cooling
• Environmental Characteristics
  1. Operating Temperature: -40°~﹢85°C;
  2. Storage Temperature: -55°~﹢125°C;
  3. Operating Humidity: 5%~95%, non-condensing

Application Areas

• Software-defined Radio;
• Radar and Baseband Signal Processing;
• High-speed Image and Graphics Processing;