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National Instruments Corporation
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Introduction
This chapter describes the SCXI-1112 module, lists what you need to get
started with your SCXI-1112 module, and provides an overview of your
software options.
About the SCXI-1112 Module
This module amplifies and filters thermocouple signals. The SCXI-1112
has eight differential analog input channels and eight cold-junction sensor
channels. On each channel, the SCXI-1112 has a 3-pole lowpass filter with
a 2 Hz cutoff frequency to reject 60 Hz noise. Each channel also has an
amplifier with a fixed gain of 100. You can multiplex the SCXI-1112
inputs to a single output that drives a single DAQ device channel.
You can auto-zero and calibrate the SCXI-1112. There is a voltage
reference onboard that you can access to perform external calibration. You
can use the auto-zeroing circuitry to remove offset voltages.
The SCXI-1112 modules are designed for use with National Instruments
E Series MIO devices or SCXI-1200 modules. You can multiplex several
SCXI-1112 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-1112 module are listed in Appendix A,
.
What You Need to Get Started
To install and use your SCXI-1112 module, you will need the following
items:
❑
The SCXI-1112 module
❑
❑
SCXI chassis or PXI combination chassis