Product Short Description
Product Name
PXI-7852R R Series Multifunction Reconfigurable I/O Module with FPGA
Product Overview
The PXI-7852R is a reconfigurable I/O module with a user-programmable Xilinx Virtex-5 LX50 FPGA. It provides analog input, analog output, and large digital I/O with custom timing, protocol, and control logic.
Description
Technical Specifications
- Analog Input Channels: 8
- Analog Input Resolution: 16 bits
- Analog Input Rate: 750 kS/s per channel
- Analog Output Channels: 8
- Analog Output Resolution: 16 bits
- Analog Output Rate: 1 MS/s
- Digital I/O Lines: 96 bidirectional
- Digital I/O Speed: Up to 40 MHz
- FPGA: Xilinx Virtex-5 LX50
- Connectors: 3 × 68-pin female VHDCI
- Operating Temperature: 0 °C to 55 °C
Functional Features
- User-programmable FPGA through LabVIEW FPGA
- Dedicated ADC per analog input channel
- Deterministic closed-loop control
- Custom digital protocols
- Hardware-in-the-loop testing
- Onboard DSP and block RAM resources
Working Principle
The FPGA connects directly to analog and digital I/O resources. Users compile LabVIEW FPGA code into a bitstream that controls sampling, output updating, protocol handling, and timing logic with nanosecond-level determinism.
Application Scenarios
- Hardware-in-the-loop testing
- Custom communication protocol emulation
- Sensor simulation
- High-speed control loops
- FPGA and embedded system verification
- Rapid control prototyping
Installation Requirements
- Install in PXI or PXI Express hybrid slot
- Use VHDCI shielded I/O cables and compatible breakout boards
- Install NI-RIO and LabVIEW FPGA
- Compile FPGA bitstream for PXI-7852R target
- Provide adequate chassis cooling
Usage Notes
- Always select correct FPGA compile target
- Do not exceed ±42 V input protection limits
- Avoid unsupported slot configurations for star trigger
- Recompile and redeploy FPGA when I/O requirements change
- Perform self-calibration periodically
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