SCXI-1521

Description

The NI SCXI-1521 with Part Number 777966-21 is a Quarter-Bridge Strain Gage Input Module designed for a multitude of applications, featuring 24 analog input channels for comprehensive data acquisition.

It includes a 10 Hz, 2-pole Butterworth filter to ensure clean signal processing, and offers extensive programmability with over 1,024 excitation levels ranging from 0-5 V, allowing for precise control over measurement parameters.

Enhanced calibration is made possible through an onboard calibration EEPROM that stores calibration constants for each channel, which can be used to correct for gain and offset errors, thereby improving overall accuracy.

Furthermore, each channel is equipped with a shunt calibration resistor, which can be programmed via software to simulate loading effects on the strain gage, thus compensating for potential strain gage inaccuracies.

Despite its Obsolete Status announced by National Instruments, the module remains accessible for purchase and servicing through Apex Waves.

Question 1: What features and capabilities does the National Instruments SCXI-1521 (Part Number 777966-21) Quarter-Bridge Strain Gage Input Module offer for data acquisition and signal processing?
Answer 1: The onboard EEPROM of the NI SCXI-1521 module enhances its calibration capabilities by storing calibration constants for each of the 24 analog input channels, which can be used to correct for gain and offset errors, thereby improving the overall accuracy of the measurements.

Question 2: What features enable the NI SCXI-1521 Quarter-Bridge Strain Gage Input Module to provide precise control and improve accuracy despite its obsolescence?
Answer 2: The NI SCXI-1521 Quarter-Bridge Strain Gage Input Module offers precise control and improved accuracy through its 24 analog input channels, a 10 Hz, 2-pole Butterworth filter for clean signal processing, over 1,024 programmable excitation levels ranging from 0-5 V, an onboard calibration EEPROM for storing calibration constants, and shunt calibration resistors on each channel to compensate for potential strain gage inaccuracies.

Question 3: What are the main features and specifications of the NI SCXI-1521 input module, including its part number, filtering capabilities, excitation levels, calibration features, and current availability despite its obsolete status?
Answer 3: The National Instruments SCXI-1521 (Part Number 777966-21) Quarter-Bridge Strain Gage Input Module offers 24 analog input channels for data acquisition, a 10 Hz, 2-pole Butterworth filter for clean signal processing, over 1,024 excitation levels ranging from 0-5 V for precise control, an onboard calibration EEPROM for storing calibration constants to correct gain and offset errors, and shunt calibration resistors on each channel to simulate loading effects

Question 4: What specific features contribute to the precision and accuracy of the NI SCXI-1521 Quarter-Bridge Strain Gage Input Module’s measurements?
Answer 4: The NI SCXI-1521 input module, part number 777966-21, is a Quarter-Bridge Strain Gage Input Module that boasts 24 analog input channels and includes a 10 Hz, 2-pole Butterworth filter for clean signal processing. It offers programmability with over 1,024 excitation levels ranging from 0-5 V, and features an onboard calibration EEPROM to store calibration constants for each channel to correct gain and offset errors. Each channel also has

Question 5: How does the NI SCXI-1521 module’s onboard EEPROM enhance its calibration capabilities for each of its 24 analog input channels?
Answer 5: The NI SCXI-1521 Quarter-Bridge Strain Gage Input Module’s measurements benefit from precision and accuracy due to its 10 Hz, 2-pole Butterworth filter for clean signal processing, over 1,024 excitation levels ranging from 0-5 V for precise control, an onboard calibration EEPROM that stores calibration constants for each channel to correct for gain and offset errors, and a shunt calibration resistor on each channel to simulate and compensate for strain gage inaccuracies.