- 1 lane (x1) PCI Express interface for increased bandwidth
- NI-MCal calibration technology for increased measurement accuracy
- 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
- Backward compatible with software used with PCI
- NI-DAQmx driver software and NI LabVIEW SignalExpress interactive data-logging software
- Data Sheet
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The National Instruments PCIe-6251 is a high-speed multifunction M Series data acquisition board designed for PCI Express. The PCI Express bus eliminates any throughput bottlenecks by providing 250 MB/s per-direction bandwidth across the x1 lane for increased data transfer. Each slot allocates dedicated bandwidth meaning that multiple PCI Express boards do not share bandwidth for data transfer. The PCI Express standard provides backward compatibility to software written for applications using PCI.
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, device specifications, and information on recommended cables and accessories, 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
Related Information
Specifications Documents
Specifications Summary
| General | |
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| Form Factor | PCI Express |
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| OS Support | Windows, Linux, Mac OS |
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| Measurement Type | Quadrature encoder |
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| DAQ Product Family | M Series |
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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 |
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| Digital I/O | |
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| Number of Channels | 24 DIO |
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| Timing | Hardware, Software |
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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/400 mA |
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| 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 | 2 |
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| Timing/Triggering/Synchronization | |
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| Synchronization Bus (RTSI) | Yes |
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| Triggering | Analog, Digital |
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| Physical Specifications | |
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| Length | 16.8 cm |
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| Width | 9.9 cm |
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| I/O Connector | 68-pin VHDCI female |
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Select your application need to see compatible software options for the NI PCIe-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 |
Please select the country where you will use the product(s) so that we can provide you with accurate pricing, availability, and purchasing information
|
