Description
The NI PXI-4461 is a high-performance, PXI Dynamic Signal Acquisition module designed for dynamic and mixed-signal applications. With its part number being 779687-01, this module stands out for its dual capability in both signal generation and acquisition, featuring 2-channel generation and 2-channel acquisition. It is well-suited for a range of applications including audio test, automotive NVH (Noise, Vibration, and Harshness), and machine condition monitoring.
The PXI-4461 offers flexible input range design with one of six gain settings, allowing for a wide variety of signal types to be accurately captured and analyzed. Signal coupling is also highly configurable, supporting both programmable AC/DC options to cater to different testing requirements. Moreover, the module is equipped with IEPE (Integrated Electronics Piezo-Electric) conditioning, making it capable of directly interfacing with IEPE sensors.
For enhanced signal fidelity, the PXI-4461 provides options for differential and pseudo-differential terminal configurations for analog inputs (AI). It also boasts an impressive resistance of 50 Ω between the BNC shell and chassis frame, minimizing noise and ensuring reliable measurements. To prevent aliasing, the module incorporates sophisticated digital filters, enhancing the quality of the acquired data.
The input channel configuration on the PXI-4461 is highly customizable, allowing configuration on a per-channel basis. This feature, combined with acquisition clock synchronization capabilities, ensures seamless integration and coordination with other devices in a measurement system. The module supports both digital and analog triggering, providing flexibility in test setup and execution.
With 24-bit resolution ADCs, the PXI-4461 captures high-fidelity data, making it ideal for precise measurements. It supports software-programmable sampling rates, including common rates such as 44.1 kS/s and 48.0 kS/s, allowing users to tailor the data acquisition process to their specific needs. Calibration
| Specification | Detail |
|---|---|
| Part Number | 779687-01 |
| Model | PXI-4461 |
| Category | PXI DSA (Dynamic Signal Acquisition) |
| Channels | 2-channel generation, 2-channel acquisition |
| Input Range Design | One of six gain settings |
| Coupling | Programmable AC/DC |
| IEPE Conditioning | Yes |
| Applications | Audio test, Automotive NVH, Machine condition monitoring |
| Terminal Configurations for AI | Differential, Pseudo-differential |
| Resistance | 50 Ω between the BNC shell and chassis frame |
| Filters | Digital filters to stop aliasing |
| Input Channel Configuration | Configurable on a per-channel basis |
| Acquisition Clock Synchronization | Yes, with other devices |
| Triggering | Digital and analog |
| Resolution | 24-bit resolution ADCs |
| Sampling Rates | Software-programmable (e.g., 44.1 kS/s, 48.0 kS/s) |
| Calibration | Available, NIST accredited through 3rd party |
| Recommended Calibration Period | Annually or every two years |
Question 1: What is the part number of the PXI-4461?
Answer 1: 779687-01
Question 2: How many channels does the PXI-4461 support for acquisition?
Answer 2: 2-channel acquisition
Question 3: Can the PXI-4461 interface with IEPE sensors?
Answer 3: Yes, it supports IEPE conditioning.
Question 4: What resistance between the BNC shell and chassis does the PXI-4461 have?
Answer 4: 50 Ohm resistance
Question 5: Are the ADCs on the PXI-4461 24-bit?
Answer 5: Yes, it has 24-bit resolution ADCs.
