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© National Instruments Corporation 1-1 SCXI-1503 User Manual
1
About the SCXI-1503
This manual describes the electrical and mechanical aspects of the
SCXI-1503 module and contains information concerning its installation
and operation. The SCXI-1503 module provides 16 differential input
channels and 16 channels of 100 μA current excitation and one cold
junction sensor channel. The SCXI-1503 is ideally suited for measuring
resistive transducers, such as RTDs or thermistors.
Each channel has an amplifier with a selectable gain of 1 or 100 and a
lowpass filter with a 5 Hz cutoff frequency to reject 50/60 Hz noise.
The SCXI-1503 can programmatically connect each input to ground, which
greatly improves its accuracy by enabling a self-calibration of each input to
reduce offset drift errors.
You can multiplex several SCXI-1503 modules and other SCXI modules
into a single channel on the DAQ device, greatly increasing the number of
analog input signals that you can digitize.
Detailed specifications of the SCXI-1503 modules are listed in
Appendix A, Specifications.
What You Need to Get Started
To set up and use the SCXI-1503, you need the following items:
❑ Hardware
– SCXI-1503 module
– One of the following terminal blocks:
• SCXI-1306—front-mount terminal block with screw
terminal connectivity.
• SCXI-1310—custom kit for custom connectivity.
• TBX-96—DIN EN mount terminal block with screw terminal
connectivity.
– SCXI or PXI/SCXI combo chassis