- 16-bit, 1.25 MS/s (max), 1 MS/s (scanning), 16 analog inputs
- Backward compatibility with software used with PXI
- 1 lane (x1) PCI Express interface for increased bandwidth
- Two 16-bit analog outputs (2.8 MS/s); 24 digital I/O; 32-bit counters
- Correlated digital I/O (8 clocked lines, 10 MHz); analog and digital triggering
- NI-DAQmx driver software and NI LabVIEW SignalExpress interactive data-logging software
- Data Sheet |
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The National Instruments PXIe-6251 is a high-speed M Series multifunction data acquisition module designed for PXI Express. The PXI Express specification eliminates any throughput bottlenecks by integrating PCI Express signaling into the PXI standard. The NI PXIe-6251 features a x1 lane, which provides 250 MB/s per-direction of dedicated bandwidth. The PXI Express specification adds these features to PXI while maintaining backward compatibility to software written for applications using PXI.
High-speed M Series devices incorporate advanced features such as the NI-STC 2 system controller, NI-PGIA 2 programmable amplifier, and NI-MCal calibration technology to increase performance and accuracy. High-speed M Series devices have an onboard NI-PGIA 2 amplifier designed for fast settling time at high scanning rates, ensuring 16-bit accuracy even when measuring all channels at maximum speeds. To learn more about M Series technologies, please refer to the data sheet and specifications.
Driver Software
M Series devices work with multiple operating systems using three driver software options including NI-DAQmx, NI-DAQmx Base, and the Measurement Hardware DDK. Browse the information in the Resources tab to learn more about driver software or download a driver. M Series devices are not compatible with the Traditional NI-DAQ (Legacy) driver.
Application Software
With NI LabVIEW, you can create custom data acquisition applications with the ease of graphical programming and power of more than 500 analysis functions and advanced programming tools. LabVIEW Full and Professional Development Systems include LabVIEW SignalExpress for interactive data logging. M Series data acquisition devices are compatible with the following versions (or later) of NI application software – LabVIEW 7.x, LabWindows™/CVI 7.x, or Measurement Studio 7.x; LabVIEW SignalExpress 1.x; or LabVIEW with the LabVIEW Real-Time Module 7.1. M Series data acquisition devices are also compatible with Visual Studio .NET, C/C++, and Visual Basic 6.
Additional Product Information
Specifications Documents
Specifications Summary
| General | |
|---|
| Form Factor | PXI Express |
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| OS Support | Windows, Real-Time |
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| Measurement Type | Quadrature encoder |
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| DAQ Product Family | M Series |
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| LabVIEW RT Support | Yes |
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| Analog Input | |
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| Number of Channels | 16 SE/8 DI |
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| Sample Rate | 1.25 MS/s |
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| Resolution | 16 bits |
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| Simultaneous Sampling | No |
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| Maximum Voltage Range | -10..10 V |
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| Range Accuracy | 1920 µV |
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| Range Sensitivity | 112 µV |
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| Minimum Voltage Range | -100..100 mV |
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| Range Accuracy | 52 µV |
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| Range Sensitivity | 6 µV |
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| Number of Ranges | 7 |
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| On-Board Memory | 4095 samples |
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| Analog Output | |
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| Number of Channels | 2 |
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| Update Rate | 2.86 MS/s |
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| Resolution | 16 bits |
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| Maximum Voltage Range | -10..10 V |
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| Range Accuracy | 2080 µV |
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| Minimum Voltage Range | -1..1 V |
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| Range Accuracy | 1045 µV |
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| Current Drive (Channel/Total) | 5 mA |
|---|
| Digital I/O | |
|---|
| Number of Channels | 24 DIO |
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| Timing | Hardware |
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| Maximum Clock Rate | 10 MHz |
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| Logic Levels | TTL |
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| Maximum Input Range | 0..5 V |
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| Maximum Output Range | 0..5 V |
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| Input Current Flow | Sinking, Sourcing |
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| Programmable Input Filters | Yes |
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| Output Current Flow | Sinking, Sourcing |
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| Current Drive (Channel/Total) | 24 mA/1.024 A |
|---|
| Watchdog Timer | No |
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| Supports Programmable Power-Up States? | Yes |
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| Supports Handshaking I/O? | No |
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| Supports Pattern I/O? | Yes |
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| Counter/Timers | |
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| Number of Counter/Timers | 2 |
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| Resolution | 32 bits |
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| Maximum Source Frequency | 80 MHz |
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| Minimum Input Pulse Width | 12.5 ns |
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| Logic Levels | TTL |
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| Maximum Range | 0..5 V |
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| Timebase Stability | 50 ppm |
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| GPS Synchronization | No |
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| Pulse Generation | Yes |
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| Buffered Operations | Yes |
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| Debouncing/Glitch Removal | Yes |
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| Number of DMA Channels | 6 |
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| Timing/Triggering/Synchronization | |
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| Synchronization Bus (RTSI) | Yes |
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| Triggering | Analog, Digital |
|---|
| Physical Specifications | |
|---|
| Length | 16 cm |
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| Width | 10 cm |
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| I/O Connector | 68-pin VHDCI female |
|---|
Factory Installation
Reduce your setup time with National Instruments installation services and get a system you can use out of the box. Factory installation services include:
- Installation of all individual hardware and software components as well as full testing to eliminate conflicts
- Custom documentation plus a custom restore and startup utility
- 2-year warranty and calibration coverage
This service is only available for PXI, CompactRIO, and Compact FieldPoint systems.
Extended Warranties
National Instruments designs and manufactures all products to minimize failures, but we know 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.
- 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 bring the hardware back to manufacturing specifications
Calibration
NI recognizes the need to maintain properly calibrated devices for high-accuracy measurements. We provide manual calibration procedures, services to recalibrate your products, and automated calibration software to calibrate many of our measurement products.
Training
NI training is the fastest, most certain route to productivity with NI tools and successful application development.
Repair Services
- You can 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 bring the hardware back to manufacturing specifications.
- Contact us to obtain a Return Material Authorization (RMA) form and shipping instructions
- View your RMA support request status online
- Register your product
Technical Support
www.ni.com/support
Select your application need to see compatible software options for the NI PXIe-6251.
| Graphical Programming |
|
Text-Based Programming |
Please select the country where you will use the product(s) so that we can provide you with accurate pricing, availability, and purchasing information
Please select the country where you will use the product(s) so that we can provide you with accurate pricing, availability, and purchasing information
Other compatible software: ANSI C/C++, C#, Visual Basic .NET, Visual Basic 6.0
| Graphical Programming |
|
Text-Based Programming |
Please select the country where you will use the product(s) so that we can provide you with accurate pricing, availability, and purchasing information
Please select the country where you will use the product(s) so that we can provide you with accurate pricing, availability, and purchasing information
Other compatible software: ANSI C/C++, C#, Visual Basic .NET, Visual Basic 6.0
| Graphical Programming |
|
Text-Based Programming |
|
