Description
The NI SCXI-1521B is a specialized module designed for static and fatigue structural tests with 120 Ω quarter-bridge strain gauges. Its part number is 777966-21B and falls under the SCXI & Legacy category. This module is specifically crafted to enhance the precision and reliability of structural testing applications.
Each of the 24 channels on the SCXI-1521B is equipped with a fixed-gain amplifier, ensuring consistent signal amplification across all channels. In addition, a fixed 2-pole Butterworth filter is included per channel to minimize signal noise, thereby enhancing the quality of the measurements.
One of the standout features of this module is its individual 0-5 V programmable excitation source for each channel, allowing for greater flexibility and control over the testing process. This feature is particularly beneficial for applications requiring precise adjustment of the excitation voltage to meet specific testing requirements.
For software compatibility, the SCXI-1521B supports NI-DAQmx 7.3 or later, LabVIEW, and LabWindows/CVI, making it a versatile option for users within the National Instruments ecosystem. This compatibility ensures that users can easily integrate the module into their existing setups without the need for extensive software adjustments.
To facilitate easy installation and connection, the module requires the SCXI-1317 Front-Mounting Terminal Block. Additionally, users have the option to enhance their setup with SCXI-1310 Connector and Shell Assembly and the TBX-96 DIN-rail Mounted Terminal Block for further customization and flexibility in their testing environments.
The SCXI-1521B is designed to work seamlessly with SH96-96 shielded 1 m cable or R96-96 1 m unshielded cable, ensuring reliable and high-quality connections. The module utilizes a 96-pin DIN C male connector, with pin labels including EX + X (Sensor Excitation), QTR X (Quarter-Bridge Completion Resistor), and
| Property | Specification |
|---|---|
| Part Number | 777966-21B |
| Category | SCXI & Legacy |
| Model | SCXI-1521B |
| Description | NI SCXI-1521B, 24-Channel 120 Ohm 1/4-Bridge Strain Input Module |
| Application | Static and fatigue structural tests with 120 Ω quarter-bridge strain gauges |
| Amplifier | Fixed-gain amplifier per channel |
| Filter | Fixed 2-pole Butterworth filter per channel |
| Excitation Source | Individual 0-5 V programmable per 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 or R96-96 1 m unshielded cable |
| Connector Type | 96-pin DIN C male connector |
| Pin Labels | EX + X (Sensor Excitation), QTR X (Quarter-Bridge Completion Resistor), AI X (Amplifier Terminal) |
| Obsolete Status | Announced but available for purchase and repairs by Apex Waves |
Question 1: What is the part number for the SCXI-1521B?
Answer 1: 777966-21B
Question 2: How many channels does the SCXI-1521B have?
Answer 2: 24 channels
Question 3: What type of filters does each channel of SCXI-1521B include?
Answer 3: Fixed 2-pole Butterworth filter
Question 4: What software supports the SCXI-1521B?
Answer 4: NI-DAQmx 7.3 or later, LabVIEW, LabWindows/CVI
Question 5: What is the excitation voltage range for each channel?
Answer 5: 0-5 V programmable
