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July 2025
PXI-6281 Request for Availability
PXI-6281, 16 Analog Input, 24 Digital I/O, PXI Multifunction I/O Module
Rated 4.45/5 | 11 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 PXI-6281 PXI Multifunction I/O Module
With the NI PXI-6281 (Part Number: 779121-01) Multifunction I/O Module, to begin any counter input or output function, the user should first empower or arm the counter. The software can gather a counter or configure counters to arm itself in a hardware signal. The software calls this Arm StartTrigger hardware signal, inside the software routes the Start Activator to the nHW counter counter input of the counter. For counter output tasks, a start trigger can be arranged to start a limited or consistent pulse generation. After a continuous generation has set off, the pulses keep on generating until the user stops the operation in software. For limited generations, the specified number of pulses is created and the generation stops unless the retriggerable attribute is used. The PXI-6281 has 16 Analog Input channels with 18 Bits resolution and 625 kS/s maximum sample rate, 2 AO, and 24 DIO.
The NI device is run using the NIDAQmx driver software which is compatible with software packages or application development environments (ADEs) such as LabVIEW or LabWindows/CVI. The PXI-6281 has a recommended warm-up time of 15 minutes, and should be calibrated at least once every 2 years.
According to the PXI-6281 datasheet, this model allows the user to utilize pause triggers in edge counting and continuous pulse generation applications. For edge counting acquisitions, the counter stops counting edges while the outside trigger signal is low and continues when the signal goes high or the other way around. With the PXI-6281, the user can also empower a programmable debouncing filter on each PFI, RTSI, or PXI_STAR signal. When the channels are empowered, the NI PXI-6281 Multifunction I/O Module samples the input on each rising edge of a channel clock. The M Series modules utilize an onboard-oscillator to produce the channel clock with a 40 MHz frequency.
The standard 3U PXI device weighs 8.2 oz. It has a recommended operating temperature range of 0 ºC to 55 ºC, a storage temperature range of -20 ºC to 70 ºC, a noncondensing humidity range of 10% RH to 90% RH. The module is designed to comply with the following electrical safety standards: IEC 61010-1, EN 61010-1, UL 61010-1, and CSA 61010-1.
The PXI-6381 is no longer available from the manufacturer National Instruments, but the PXI Multifunction I/O Module will still be available in perpetuity for either purchase or repairs with Apex Waves!
| Model | PXI-6281 |
|---|---|
| Manufacturer | National Instruments |
| Part Number | 779121-01 |
| Series | M Series |
| Type | PXI Multifunction I/O Module |
| Analog Input Channels | 16 |
| Analog Input Resolution | 18 Bits |
| I/O Connector | One 68-Pin VHDCI |
| Warm-Up Time | 15 Minutes |
| Calibration Interval | 2 Years |
| Bus Interface | 3.3 V or 5 V Signal Environment |
| Operating Temperature | 0 ºC to 55 ºC |
| Storage Temperature | -20 ºC to 70 ºC |
| Dimensions | Standard 3U PXI |
| Weight | 8.2 oz (233 g) |
| Warranty | Three Year Warranty |
| PXI-6281 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Request a Quote for Pricing Info |
Associated part numbers for PXI-6281:
National Instruments PXI-6281 Frequently Asked Questions
Question: What is the maximum update rate of the PXI-6281?
Answer: The maximum update rate is 2.86 MS/s.
Question: What type of I/O connector is on the PXI-6281?
Answer: There is one 68-pin VHDCI I/O connector.
Question: What is the operating temeprature of the PXI-6281?
Answer: The Multifunction I/O Module has an operating temperature of 0 to 55 degrees C.
Question: What is the maximum sample rate?
Answer: The maximum sample rate of the NI PXI-6281 is 625 kS/s.
PXI-6281 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-6281-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-628X-LETTER-OF-VOLATILITY.PDF
PXI-6281 Diagrams
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