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PXI-6251, 1.25 MS/s Sample Rate, PXI Multifunction I/O Module
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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
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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 PXI-6251 PXI Multifunction I/O Module
The NI PXI-6251 (Part number: 779631-01, 191325F-13L, 779117-01, 191325E-03L, 191325D-03) PXI Multifunction I/O Module has 8 differential or 16 single-ended analog input channels, two analog output channels, and 24 digital I/O channels. It has a 16-bit analog input resolution. This PXI Multifunction I/O Module is ideal for manufacturing test, research, laboratory automation, and design verification/test. Both high-voltage and sensor features can be added to this module with SCXI or SCC signal conditioning modules. The PXI-6251 can also be used with a 2 m shielded SHC68-68-EPM Cable and a SCB-68 Spring-Screw Terminal Connector Block. The device is equipped with 1 68-pin VHDCI I/O connector. Part number 779117-01 refers to the PXI / SCXI Combo Chassis of the PXI-6251.
This module is not compatible with the traditional NI-DAQ Legacy driver software. When the PXI-6251 module is used with the compatible NI-DAQmx driver software, there are many benefits. NI-DAQmx has features such as automatic timing, triggering, and synchronization routing to simplify difficult applications, numerous free software downloads to help the user begin their application, one programming interface for analog output, analog input, digital I/O, and more. NI-DAQmx allows the user to pick the quickest conceivable change rate considering the speed of the A/D converter and will include 10 μs of fill between each channel to permit a satisfactory set-up time. This plan enables the channels to approach the synchronous testing and still permit enough foundation time.
If the sample clock frequency AI is too quick to permit 10 μs to be connected, NI-DAQmx will choose the conversion rate, so the AI Convert Clock pulses are equally divided all through the sample. Also, the PXI-6251 disregards all ai/ConvertClock pulses until it perceives an ai/SampleClock pulse. After the gadget gets the right number of ai/ConvertClock pulses, it ignores subsequent ai/ConvertClock pulses until it gets another ai/SampleClock. The device has a recommended warm-up time of 15 minutes, and should be calibrated at least once every 2 years. The standard 3U PXI device weighs 7.8 oz. It has a recommended operating temperature range of 0 ºC to 55 ºC. For additional specifications and the pinout for the NI PXI-6251, look under the "Manuals & PDFs" tab.
The PXI-6251 is no longer available from the manufacturer National Instruments, but the PXI Multifunction I/O Module will remain available in perpetuity with Apex Waves for both purchase or repair services!
| Model | PXI-6251 |
|---|---|
| Manufacturer | National Instruments |
| Part Number | 779631-01, 191325F-13L, 779117-01, 191325E-03L , 191325D-03 |
| Series | M Series |
| Type | PXI Multifunction I/O Module |
| Analog Input Channels | 16 |
| Analog Input Resolution | 16 Bits |
| Dimensions | Standard 3U PXI |
| Weight | 7.8 oz. |
| Warranty | Three Year Warranty |
| PXI-6251 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Submit a Quote Request for Pricing Information |
Associated part numbers for PXI-6251:
National Instruments PXI-6251 Frequently Asked Questions
Question: Where can I view the PXI-6251 pinout?
Answer: User manuals and official NI documentation can be found under the "Manuals & PDFs" tab.
Question: How many analog outputs does the module have?
Answer: The NI PXI-6251 has two analog outputs.
Question: Which accessories are suggested for use with the PXI-6251?
Answer: The module can be used with the 2 m Shielded SHC68-68-EPM Cable (Part number: 192061-02) and the Spring-Screw Terminals SCB-68 (Part number: 776844-01).
Question: What types of counter measurements can the counters/timers on the PXI-6251 perform?
Answer: The counters/timers on the Multifunction I/O Module have the following measurements available: two-edge separation, edge counting, period, pulse, and semi-period.
PXI-6251 PDF Manuals
DAQ-GETTING-STARTED-GUIDE-FOR-PXI-PXI-EXPRESS.PDF
DAQ-GETTING-STARTED-READ-ME-FIRST-NI-DAQMX-AND-DAQ-DEVICE-INSTALLATION-GUIDE.PDF
NI-6251-DEVICE-SPECIFICATIONS.PDF
NI-62XX-63XX-PINOUT-LABELS-FOR-THE-SCB-68-NOTE-TO-USERS.PDF
NI-62XX-63XX-PINOUT-LABELS-FOR-THE-SCB-68A-NOTE-TO-USERS.PDF
PCI-PXI-625X-LETTER-OF-VOLATILITY.PDF
PXI-6251 Diagrams
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