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National Instruments Corporation
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Installing and Configuring
the SCXI-1126
This manual describes the electrical and mechanical aspects of the
SCXI-1126 module and contains information concerning its installation
and operation. The SCXI-1126 is a member of the NI Signal Conditioning
eXtensions for Instrumentation (SCXI) family of modules. Specifically,
the SCXI-1126 module is designed for signal conditioning of
frequency-generating sensors and other analog and digital periodic signal
sources. The SCXI-1126 provides eight isolated frequency input channels
and each channel is independently configurable through software.
This chapter describes the SCXI-1126, lists what you need to get started,
explains how to unpack the SCXI-1126, and describes the optional
software and equipment.
About the SCXI-1126
The SCXI-1126 signal conditioning module is used in isolating frequency
generating sensors, and other analog and digital periodic signal sources.
The SCXI-1126 has eight isolated input channels, each with ten selectable
input frequency ranges from 250 Hz to 128 kHz, along with programmable
input threshold and hysteresis functions. Each channel also has four
selectable, 4-pole lowpass filters with cut-off frequencies ranging from
1 Hz to 1 kHz.
The SCXI-1126 operates in two output modes—parallel output and
multiplexed output. In parallel output mode, all eight SCXI-1126 channels
connect in parallel to eight E Series data acquisition (DAQ) device
channels.
In multiplexed output mode, all eight SCXI-1126 channels are multiplexed
into a single E Series DAQ device channel. You can multiplex several
SCXI-1126 modules into a single channel and greatly increase the number
of analog input signals that can be digitized.
