NI SCXI-1100 32-Channel Analog Input Conditioning Module

NI SCXI-1100 32-Channel Analog Input Conditioning Module

The NI SCXI-1100 is a cost-effective 32-channel analog signal conditioning module manufactured by National Instruments. It supports 32 single-ended or 16 differential input channels, equipped with a programmable gain amplifier and three built-in low-pass filters for noise suppression. Featuring integrated cold-junction compensation, it directly works with thermocouples and RTDs for multi-point temperature measurement. With wide input voltage range and strong overvoltage protection, it delivers excellent common-mode rejection to resist industrial electromagnetic interference. This module multiplexes all channels to one DAQ input channel, enabling low-cost multi-channel signal expansion. It fits standard SCXI chassis and is compatible with NI-DAQmx, supporting LabVIEW, CVI and Python programming. Ideal for slow-varying signal acquisition like temperature, pressure and strain monitoring in labs and industrial sites.

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Description

1. Channel Configuration

  • 32 single-ended analog inputs
  • 16 differential analog inputs
  • All channels multiplex to one single DAQ AI channel

2. Programmable Gain

×1, ×2, ×5, ×10, ×20, ×50, ×100
  • Gain ×1: Full scale ±10 V
  • Gain ×100: Full scale ±100 mV

3. On-board Low-pass Filters

  1. Full bandwidth, max scan rate 240 kS/s
  2. 10 kHz 4th-order filter, max 6.6 kS/s
  3. 4 Hz 4th-order filter, max 3 S/s for 50/60 Hz noise rejection

4. Electrical Performance

Input impedance >10 MΩ; 60 Hz CMRR >120 dB; Nonlinearity 0.005% FSR; Overvoltage protection ±42 VDC (powered), ±27 VDC (unpowered); Power consumption 2.5 W; Built-in CJC sensor for thermocouple measurement.

5. Mechanical & Environmental

96-pin DIN front connector; Standard SCXI backplane; Dimension 172×86×32 mm; Operating temperature -20 ℃ ~ +70 ℃

6. Software Compatibility

Drivers: NI-DAQmx, Traditional NI-DAQ

Supported platforms: LabVIEW, LabWindows/CVI, Python DAQmx, C#, VB

7. Typical Applications

Multi-point temperature monitoring, static pressure/strain sensor testing, long-term equipment condition monitoring, laboratory multi-channel slow signal measurement

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