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July 2025
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785068-01, 24 Bits, 4 Channels, +/-7V RMS, PXIe-4340 Displacement Input Module
Rated 4.9/5 | 16 ratings
Actual item may vary if no part number is provided on quote request.
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Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Carol Zimme**** Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
National Instruments 785068-01 PXI Displacement Input Module
National Instruments part number 785068-01 is an identifying part number for the PXIe-4340, a PXI Displacement Input Module. This module is equipped with 4 channels 16-bit resolution and a sampling rate of 25.6 kS/S per channel. It is a filtered analog input module designed for AC linear variable differential transformer (LVDT), AC rotary variable differential transformer (RVDT), resolver, and synchro measurements. It supports 4-, 5-, and 6-wire LVDT and RVDT configurations. Each analog input is sampled simultaneously, with the ability to independently set the excitation frequency and voltage for each channel. All four analog input channels can be sampled simultaneously up to the maximum sample rate.
The module features diagnostic capabilities such as self-calibration, overcurrent detection, and open coil detection. The included NI-DAQmx driver simplifies hardware configuration and measurement. The 785068-01 Displacement Input Module features a built-in remote sensor system that continuously adjusts for errors in excitation leads. This system is particularly important for applications involving long wires and/or small gauge wires, which have higher resistance.
The remote sensor also senses the excitation of synchronized channels, enabling the 785068-01 to accurately measure ratios across channels for sensors. This Displacement Module has a Self-Calibration feature that adjusts radiometric gain and offset. This feature cancels out the drift of the analog motherboard. It also nulls the DC component of the excitation source and adjusts the amplitude against an internal reference.
The excitation type is a constant differential voltage (balanced), ensuring consistent and accurate signal delivery. For enhanced durability and protection, the excitation system can withstand up to ±30 V, safeguarding against potential over-voltage situations. The output impedance of 3 Ω further supports stable and reliable performance, ensuring the excitation signals are delivered with minimal interference.
| Part Number | 785068-01 |
|---|---|
| Model Name | PXIe-4340 |
| Part Type | PXI Displacement Input Module |
| Number of Channels | 4 analog input channels |
| ADC Resolution | 24 bits |
| Type of ADC | Delta-Sigma |
| Sampling Mode | Simultaneous |
| Open Coil Detection Time | 200 ms |
| FIFO Buffer Size | 1023 samples |
| Data Transfers | Direct memory access (DMA), programmed I/O |
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