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July 2025
PXI-6225
PXI-6225, 16 Bit Resolution, 250 kS/s Sampling Rate, Multifunction I/O Module
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
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✔ NIST Calibration Available
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
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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-6225 Multifunction I/O Module
The PXI-6225 (part number: 779296-01) Multifunction I/O Module from the M Series by National Instruments has 40 differential or 80 single-ended analog input channels, 16-bit resolution, a maximum sampling rate of up to 250 kS/s, two analog output channels, and 24 DIO channels. There are a few main blocks in the analog input circuitry for the NI PXI-6225: the I/O connectors (2 68-pin VHDCI), ground-reference settings, instrumentation amplifier (NI-PGIA), and mux. The I/O connector permits the user to link analog input signals to the module. Next, the ground-reference settings circuitry decides between referenced single-ended, differential, and non-referenced single-ended input modes. The NI-PGIA is a measurement and instrument class amplifier that decreases settling times for all input ranges; preciseness can be sustained even while sampling numerous channels quickly. Lastly, the multiplexers (mux) can route a single AI channel at once to the ADC by way of the NI-PGIA.
The National Instruments PXI-6225 Multifunction I/O Module can also be linked to floating signal sources, such as optical isolators, thermocouples, isolation amplifiers, transformers, and battery-powered devices. If the input signal is less than 1 V, the signal leads go through loud atmospheres, the leads linking the signal to the device are longer than 10 feet, or two analog input channels are accessible for the signal, then differential links should be utilized with floating signal sources. On the other hand, if the input signal is higher than 1 V or the leads linking the signal to the device are smaller than 10 feet, then non-referenced single-ended (NRSE) links should be utilized with floating signal sources. The module has a recommended warm-up time of 15 minutes and should be calibrated at least once a year.
The NI device has a recommended operating temperature range of 0 ºC to 55 ºC, a storage temperature range of -20 ºC to 70 ºC, and a noncondensing humidity range of 10% RH to 90% RH.
The PXI-6225 has been announced as obsolete by National Instruments (NI), but the multifunction I/O module will still be available for purchase and repairs in perpetuity with Apex Waves.
| Model | PXI-6225 |
|---|---|
| Manufacturer | National Instruments |
| Part Number | 779296-01 |
| Series | M Series |
| Type | Multifunction I/O Module |
| Analog Input | 80 Single-Ended and 40 Differential Channels |
| Analog Output | 2 Channels |
| Digital I/O | 24 Channels |
| Analog Input Resolution | 16 Bit |
| Sampling Rate | 250 kS/s Maximum |
| PXI-6225 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Request a quote |
Associated part numbers for PXI-6225:
National Instruments PXI-6225 Frequently Asked Questions
Question: What software can be used with the PXI-6225?
Answer: The Multifunction I/O Module can be used with NI-DAQmx and SignalExpress LE data-logging software.
Question: What is the recommended calibration interval for the device?
Answer: The NI PXI-6225 has a recommended one-year calibration interval.
Question: What specifications are beneficial for testing applications with the NI PXI-6225?
Answer: For test and measurement applications, the PXI-6225 provides 16-bit analog input resolution, up to 250 kS/s aggregate sampling, 24 digital I/O lines, two analog output channels, and two 32-bit counter/timers. These features make it suitable for data acquisition, sensor measurements, automated testing, and laboratory research applications.
PXI-6225 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-6225-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
NI-PCI-PXI-622X-LETTER-OF-VOLATILITY.PDF
PXI-6225 Diagrams
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