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NI SCXI-1140

8-Channel Simultaneous-Sampling Differential Amplifier Module

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  • 8 simultaneously sampled input channels
  • Connections for external sample-and-hold timing signal
  • +/-30 V maximum overvoltage protection, powered on
  • Cascade with NI SCXI-1142 for applications requiring filtering
  • NI-DAQmx measurement services software to simplify configuration and measurements


Use the "Configure System" link above to configure an SCXI DAQ system based on this module.

The NI SCXI-1140 is an 8-channel simultaneous-sampling differential amplifier module. Each channel contains a high-input-impedance instrumentation amplifier with switch-selectable gain followed by a track-and-hold (T/H) amplifier. The T/H amplifiers track simultaneously, which is useful for preserving interchannel phase relationships. You can run the T/H outputs to eight different input channels on the data acquisition device, or you can multiplex the output of one or more modules into one channel of the data acquisition device.

An SCXI chassis is required to house the SCXI modules. The NI SCXI-1000 chassis can hold up to four modules while the NI SCXI-1001 can hold up to 12. You can choose NI X Series, M Series, E Series, or S Series DAQ modules for controlling the chassis.

Specifications Documents

Specifications Summary

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Part Number Description Est Ship  US Dollars Qty
NI SCXI-1140
776572-40SCXI-1140 8-Ch. Simultaneously Sampling Differential Amplifier12 - 20$ 1,300.00
Related Products and Accessories
777687-05SCXI-1305 AC/DC Coupling BNC Terminal Block12 - 20$ 467.00

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Extended Warranties

National Instruments designs and manufactures all products to minimize failures, however unexpected failures can still occur. Extended warranties provide a fixed economical price at the time of system purchase, covering any repair costs for up to three years. In addition, they offer the following benefits:

  • Significant cost savings compared to individual repair incidents
  • Fault location, diagnostics, and repair by NI any time the system product fails
  • All parts and labor costs covered as well as any adjustments needed to restore the hardware to manufacturing specifications

For more information about your warranty options:

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