Academic Company Events NI Developer Zone Support Solutions Products & Services Contact NI MyNI

NI SCXI-1121

4-Channel Isolation Amplifier with Excitation

  • Shunt calibration
  • Lowpass filtering
  • Isolated voltage and current excitation
  • Isolated analog inputs
  • NI-DAQ driver software simplifies configuration and measurements
  • Signal inputs from millivolts to ±250 V
Data Sheet  |   Configure System popup

Use SCXI Advisor to configure an SCXI data acquisition system based on this module.

National Instruments SCXI-1121 and SCXI-1122 are designed for a wide variety of sensor and signal inputs requiring isolation. The SCXI-1121 offers independently configurable isolation amplifiers, filters, and excitation sources for each channel. Both modules offer 250 Vrms working isolation and can acquire strain, RTD, thermocouple, millivolt, volt, 250 V, 0 to 20 mA, and 4 to 20 mA current input signals. Both modules can multiplex their channels into a single channel of the DAQ device, and you can add modules to increase channel count. The SCXI-1121 also offers parallel-mode operation.

most popular item most popular item(s)
Part Number Description Est Ship  US Dollars Qty
Common Configuration
776572-21most popular item SCXI-1121 4 ch Isolation Amplifier12 - 20$ 1,199.00
777687-27SCXI-1327 High-Voltage Attenuator Terminal Block, Cast10 - 15$ 369.00
Complete your SCXI Data Acquisition System with USB Connectivity
776572-1600NI SCXI-1600, USB Data Acquisition and Control Module5 - 10$ 1,199.00
776570-01most popular item SCXI-1000 4-Slot Chassis, U.S. 120 VAC5 - 10$ 829.00

Guarantee your price for 30 days with an NI Instant Quote (learn more)

You have selected the United States as the country where you will use the product(s) (change).

Additional Product Information


Related Information

Specifications Documents


Specifications Summary

General 
Form FactorSCXI
Operating System / TargetWindows, Real-Time, Linux
Measurement TypeCurrent, RTD, Strain gauge, Thermocouple, Voltage
LabVIEW RT SupportYes
Isolation TypeCh-Ch Isolation
Analog Input 
Number of Channels4 DI
Sample Rate333 kS/s/ch
Bandwidth10 kHz
Simultaneous SamplingYes
Maximum Bandwidth10 kHz
Input Impedance1 GOhm
Maximum Voltage Range-250..250 V
Minimum Voltage Range-2.5..2.5 mV
Signal Conditioning0-20 mA current input, Cold-junction compensation, Low-pass filtering, Voltage excitation
Available Filters10 kHz, 4 Hz
Excitation Current0.15 mA
Bridge ConfigurationsFull Bridge, Half Bridge, Quarter Bridge
Analog Output 
Number of Channels0
Digital I/O 
Number of Channels0
Counter/Timers 
Number of Counter/Timers0
Timing/Triggering/Synchronization 
TriggeringAnalog, Digital
Triggers cDAQ ChassisNo

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:

Calibration

NI recognizes the need to maintain properly calibrated devices for high-accuracy measurements. NI provides manual calibration procedures, services to recalibrate your products, and automated calibration software to calibrate many NI measurement products.

Training

NI training is the fastest, most certain route to productivity with NI tools and successful application development.

Repair Services

Return your registered product under warranty at no additional labor and parts cost. NI offers fault location, diagnostics, and repair any time the system fails as well as any adjustments needed to restore the hardware to manufacturing specifications.

Technical Support

ni.com/support