1. Product Description
The NI PXI-6229 is a cost-effective, multifunction DAQ board optimized for high-accuracy measurements. It utilizes the NI-STC 2 system controller and NI Signal Labeling technology to provide advanced timing and synchronization. It is ideal for applications ranging from simple data logging to complex embedded control systems.
2. Technical Specifications (Parameters)
The PXI-6229 is characterized by its high analog I/O density. Below are the core technical specifications:
| Feature | Specification |
| Analog Inputs | 32 Single-Ended / 16 Differential |
| Sampling Rate | 250 kS/s (Aggregate) |
| Resolution | 16-bit |
| Analog Outputs | 4 Channels (16-bit, 833 kS/s) |
| Digital I/O | 48 Bidirectional Channels |
| Counter/Timers | 2 Channels (32-bit resolution) |
| Input Range | $\pm 10$ V, $\pm 5$ V, $\pm 1$ V, $\pm 0.2$ V |
| Bus Connector | PXI Standard (3U) |
3. Product Advantages
High Channel Density: With 32 analog inputs and 48 digital lines, it saves rack space by consolidating multiple functions into a single PXI slot.
NI-MCal Technology: Features a self-calibration methodology that uses an onboard stable voltage reference to minimize error caused by temperature drift.
Seamless Integration: Fully compatible with LabVIEW, LabWindows™/CVI, and Measurement Studio, reducing development time.
Superior Timing: The NI-STC 2 chip enables independent timing engines for analog, digital, and counter operations.
4. Key Precautions (Notes)
Signal Shielding: To maintain 16-bit accuracy, use shielded cables (e.g., SHC68-68-EPM) to prevent electromagnetic interference (EMI).
Grounding: Ensure a common ground reference to avoid ground loops, especially when using single-ended input modes.
Power Budget: Verify that your PXI chassis power supply can handle the current draw of the PXI-6229 alongside other installed modules.
Operating Environment: Maintain proper airflow within the PXI chassis to prevent the module from exceeding its rated operating temperature.
5. Typical Applications
The NI PXI-6229 is versatile and commonly used in the following fields:
Automated Test Equipment (ATE): High-speed functional testing of electronic components.
Control Systems: Implementing PID control loops for industrial machinery.
Data Logging: Long-term monitoring of environmental sensors (temperature, pressure, strain).
Laboratory Research: Precision measurement in physics and chemical engineering experiments.
