Description
The SCXI-1521 is a specialized input module designed for precise strain measurements, part of the SCXI & Legacy category. Its part number is 190939D-01L (777966-21). This module stands out for its capability to handle 24 analog input channels, making it suitable for extensive data collection and analysis in engineering and scientific applications.
Each channel is equipped with a 10 Hz, 2-pole Butterworth filter, ensuring that the signal integrity is maintained by reducing noise and improving the quality of the measurements. The SCXI-1521 offers programmable excitation levels over 1,024 levels from 0-5 V, allowing for precise control over the measurement process.
An important feature of the SCXI-1521 is its onboard calibration EEPROM, which stores per-channel calibration constants. This ensures that the module can maintain its accuracy over time and that the data collected is reliable. To further enhance its performance, there is a shunt calibration resistor on each channel, which can be used for strain gage errors compensation. This feature is software controlled, providing users with flexibility and ease of use.
Despite its obsolete status announced by National Instruments, the SCXI-1521 remains available for purchase and repairs through Apex Waves. This ensures that users can continue to rely on this high-quality module for their strain measurement needs without concern for its discontinued status.
| Specification | Detail |
|---|---|
| Part Number | 190939D-01L (777966-21) |
| Category | SCXI & Legacy |
| Model | SCXI-1521 |
| Description | NI SCXI-1521 24 ch, 350-Ohm Quarter-Bridge Strain Input Module |
| Channel Count | 24 analog input channels |
| Filter | 10 Hz, 2-pole Butterworth filter |
| Excitation Levels | Programmable over 1,024 levels from 0-5 V |
| Calibration | Onboard calibration EEPROM for per-channel calibration constants |
| Shunt Calibration Resistor | On each channel for strain gage errors compensation, software controlled |
| Obsolete Status | Announced by National Instruments, available for purchase and repairs by Apex Waves |
Question 1: What is the filter type of the SCXI-1521?
Answer 1: It has a 10 Hz, 2-pole Butterworth filter.
Question 2: How many input channels does the SCXI-1521 have?
Answer 2: It features 24 analog input channels.
Question 3: Can the SCXI-1521’s excitation levels be adjusted?
Answer 3: Yes, excitation levels are programmable over 1,024 levels.
Question 4: Does the SCXI-1521 have onboard calibration?
Answer 4: Yes, it includes an EEPROM for storing calibration constants.
Question 5: Is the SCXI-1521 still available for purchase?
Answer 5: Yes, available through Apex Waves despite its obsolete status.
