Description
The SCXI-1521B is a specialized module designed for static and fatigue structural tests with 120 Ω quarter-bridge strain gauges. This unit is part of the SCXI & Legacy category and carries part numbers 185540H-03 and 777966-21B. It is equipped with a fixed-gain amplifier and a fixed 2-pole Butterworth filter to ensure precise signal processing.
The module offers a programmable excitation source that can supply 0-5 V for each channel, making it highly adaptable to various testing conditions. Compatibility with software is broad, supporting NI-DAQmx 7.3 or later, as well as integration with LabVIEW and LabWindows/CVI, allowing for flexible and powerful setup options for data acquisition and analysis.
For setup and connectivity, the SCXI-1317 Front-Mounting Terminal Block is a required accessory, ensuring secure and reliable connections. Optional accessories include the SCXI-1310 Connector and Shell Assembly and the TBX-96 DIN-rail Mounted Terminal Block, offering additional flexibility and ease of use in various application scenarios.
The module features compatibility with both SH96-96 shielded 1 m cable and R96-96 1 m unshielded cable, facilitating diverse setup configurations. Connection to devices is made through a 96-pin DIN C male connector, ensuring high reliability and signal integrity.
Despite its obsolete status announced by National Instruments, the SCXI-1521B remains available for purchase and repairs through Apex Waves, providing a valuable resource for users requiring specialized equipment for their structural testing applications.
| Specification | Details |
|---|---|
| Part Number | 185540H-03, 777966-21B |
| Category | SCXI & Legacy |
| Model | SCXI-1521B |
| Applications | Static and fatigue structural tests with 120 Ω quarter-bridge strain gauges |
| Amplifier | Fixed-gain |
| Filter | Fixed 2-pole Butterworth filter |
| Programmable Excitation Source | 0-5 V for each channel |
| Software Compatibility | NI-DAQmx 7.3 or later, LabVIEW, LabWindows/CVI |
| Required Accessories | SCXI-1317 Front-Mounting Terminal Block |
| Optional Accessories | SCXI-1310 Connector and Shell Assembly, TBX-96 DIN-rail Mounted Terminal Block |
| Cable Compatibility | SH96-96 shielded 1 m cable, R96-96 1 m unshielded cable |
| Signal Connector Type | 96-pin DIN C male connector |
| Obsolete Status | Announced by National Instruments, available for purchase and repairs by Apex Waves |
Question 1: What tests does the SCXI-1521B perform?
Answer 1: Static and fatigue structural tests.
Question 2: What type of filter does the SCXI-1521B use?
Answer 2: Fixed 2-pole Butterworth filter.
Question 3: What is the SCXI-1521B’s compatibility with NI-DAQmx?
Answer 3: Version 7.3 or later.
Question 4: What accessory is required for the SCXI-1521B?
Answer 4: SCXI-1317 Front-Mounting Terminal Block.
Question 5: Is the SCXI-1521B still available for purchase?
Answer 5: Yes, through Apex Waves.




