Description
The National Instruments PXIe-4468 is a versatile PXI Sound and Vibration Module designed for applications such as audio testing, automotive NVH, and machine condition monitoring. With part numbers 788512-01 featuring a Mini-XLR connector and 788511-01 with a BNC connector, this module supports two-channel dynamic signal generation and acquisition, offering a robust solution for a variety of testing scenarios.
Users can take advantage of the module’s six gain settings to configure the input range, ensuring precise measurements tailored to specific requirements. The PXIe-4468 is equipped with both AC/DC coupling capabilities and IEPE conditioning, along with a built-in tone generator for comprehensive testing functionalities.
The output stage of the PXIe-4468 is a differential amplifier which can be configured to pseudodifferential mode using software, with a gain difference of -22.0 mdB that is automatically corrected by the software to ensure consistent performance. If an external connection is made for pseudodifferential mode, it introduces the same gain change, which, however, is not corrected by the software.
For enhanced common-mode noise rejection, it is highly recommended to establish a connection between the chassis ground of the PXIe-4468 and the ground of the input device, which is crucial especially when the input device is isolated. This module, with its configurable features and multiple channels, empowers engineers to achieve highly accurate and reliable results in their sound and vibration testing applications.
| Feature | Description |
|---|---|
| Manufacturer | National Instruments |
| Model | PXIe-4468 |
| Part Numbers | 788512-01 (Mini-XLR connector), 788511-01 (BNC connector) |
| Type | PXI Sound and Vibration Module |
| Channels | Two-channel dynamic signal generation and acquisition |
| Gain Settings | Six gain settings to configure input range |
| Coupling | AC/DC coupling |
| IEPE Conditioning | Yes |
| Tone Generator | Built-in tone generator |
| Output Stage Configuration | Differential amplifier, configurable to pseudodifferential mode in software |
| Gain Difference in Pseudodifferential Mode (Software Configurable) | -22.0 mdB (automatically corrected by software) |
| Gain Difference in Pseudodifferential Mode (External Connection) | -22.0 mdB (not corrected by software) |
| Common-Mode Noise Rejection | Connection between chassis ground and input device ground recommended |
| Applications | Audio testing, automotive NVH, machine condition monitoring |
Question 1: What measures should be taken to enhance common-mode noise rejection when using the National Instruments PXIe-4468 for sound and vibration testing applications?
Answer 1: To enhance common-mode noise rejection when using the National Instruments PXIe-4468 for sound and vibration testing applications, it is highly recommended to establish a connection between the chassis ground of the PXIe-4468 and the ground of the input device, particularly important when the input device is isolated.
Question 2: What are the key features and functionalities that make the National Instruments PXIe-4468 module suitable for applications like audio testing, automotive NVH, and machine condition monitoring?
Answer 2: The National Instruments PXIe-4468 PXI Sound and Vibration Module is designed for a range of applications including audio testing, automotive NVH, and machine condition monitoring, offering features such as two-channel dynamic signal generation and acquisition, six gain settings for tailored input range, AC/DC coupling, IEPE conditioning, and a built-in tone generator. Its connectivity options include Mini-XLR and BNC connectors for versatility, while the differential amplifier can be set to pseudodifferential mode for a
Question 3: What applications is the National Instruments PXIe-4468 PXI Sound and Vibration Module designed for, and what are its unique features that support these applications?
Answer 3: The National Instruments PXIe-4468 is suitable for a variety of sound and vibration testing applications due to its two-channel dynamic signal generation and acquisition, six gain settings for input range configuration, AC/DC coupling capabilities, IEPE conditioning, a built-in tone generator for comprehensive testing, and a differential amplifier with software-configurable pseudodifferential mode for consistent performance and enhanced common-mode noise rejection.
Question 4: What are the key features and applications of the National Instruments PXIe-4468 PXI Sound and Vibration Module, and how do its connectivity options, gain settings, and differential amplifier configuration contribute to its functionality in testing scenarios?
Answer 4: The National Instruments PXIe-4468 PXI Sound and Vibration Module is designed for applications such as audio testing, automotive NVH (Noise, Vibration, and Harshness), and machine condition monitoring, and it supports these applications with unique features like two-channel dynamic signal acquisition and generation, six gain settings for tailored input range, AC/DC coupling, IEPE conditioning, a built-in tone generator, and a differential amplifier that can be configured to pseudodifferential mode for enhanced noise
Question 5: What features of the National Instruments PXIe-4468 make it suitable for a variety of sound and vibration testing applications, including audio testing, automotive NVH, and machine condition monitoring?
Answer 5: The National Instruments PXIe-4468 module is suitable for applications such as audio testing, automotive NVH, and machine condition monitoring due to its two-channel dynamic signal generation and acquisition, six gain settings for precise input range configuration, AC/DC coupling capabilities, IEPE conditioning, a built-in tone generator for extensive testing, differential amplifier output that can be software-configured to pseudodifferential mode, and recommendations for enhanced common-mode noise rejection through proper grounding, all of which enable engineers to obtain
