NI PCIe-6251

16-Bit, 1.25 MS/s (Max), 1 MS/s (Scanning), 16 Analog Inputs

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National Instruments recommends the X Series PCIe-6351 for new applications
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-MCal calibration technology for increased measurement accuracy
NI-DAQmx driver software and NI LabVIEW SignalExpress LE interactive data-logging software

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View Data Sheet and Specifications

Overview
Specifications
Pricing
Resources

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.

Data Sheet | View Pricing and Purchasing Information »

NI PCIe-6251 Complete Package

Each NI PCIe-6251 requires:


1 Connector Block		1 Cable		NI PCIe-6251		Software

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NI PCIe-6251 and Accessories

Hardware Subtotal: $ 1,577

NI PCIe-6251 - 779512-01	Qty	$ 1,149 each
Connector Block - Screw Terminal SCB-68 - 776844-01	Qty	$ 299 each
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Cable - Shielded SHC68-68-EPM (2m) - 192061-02	Qty	$ 129 each
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Software

Software Subtotal: $ 0

NI LabVIEW Full Development System for Windows (English) - 776670-35	Qty	$ 2,599 each

Note : You should only purchase this device without software if you already own compatible application software. View Compatible Application Software \| Compare to LabVIEW SignalExpress Limited Edition [Close]
Note : This software is required to use LabVIEW Application Builder for Windows. You should purchase LabVIEW Application Builder for Windows without a LabVIEW Development System only if you already own LabVIEW Base or Full for Windows version 8.6.1 or later. Upgrade Your Development System Now [Close]
LabVIEW Application Builder for Windows (English) - 776675-35	Qty	$ 999 each
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Additional Product Information

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Specifications Documents

Specifications Summary

General
Product Name	PCIe-6251
Product Family	Multifunction Data Acquisition
Form Factor	PCI Express
Operating System/Target	Windows , Linux , Mac OS
DAQ Product Family	M Series
Measurement Type	Digital , Frequency , Quadrature encoder , Voltage
RoHS Compliant	Yes
Analog Input
Channels	16 , 8
Single-Ended Channels	16
Differential Channels	8
Resolution	16 bits
Sample Rate	1.250 MS/s
Max Voltage	10.0 V
Maximum Voltage Range	10.0 , -10.0 V
Maximum Voltage Range Accuracy	1.920 mV
Maximum Voltage Range Sensitivity	112 µV
Minimum Voltage Range	100 V , -100 V
Minimum Voltage Range Accuracy	52 µV
Minimum Voltage Range Sensitivity	6 µV
Number of Ranges	7
Simultaneous Sampling	No
On-Board Memory	3.999 kB
Analog Output
Channels	2
Resolution	16 bits
Max Voltage	10.0 V
Maximum Voltage Range	10.0 , -10.0 V
Maximum Voltage Range Accuracy	2.080 mV
Minimum Voltage Range	5.0 , -5.0 V
Minimum Voltage Range Accuracy	1.045 mV
Update Rate	2.860 MS/s
Current Drive Single	5 mA
Digital I/O
Bidirectional Channels	24
Input-Only Cannels	0
Output-Only Channels	0
Number of Channels	24 , 0 , 0
Timing	Software , Hardware
Max Clock Rate	10 MHz
Logic Levels	TTL
Input Current Flow	Sinking , Sourcing
Output Current Flow	Sinking , Sourcing
Programmable Input Filters	Yes
Supports Programmable Power-Up States?	Yes
Current Drive Single	24 mA
Current Drive All	400 mA
Watchdog Timer	No
Supports Handshaking I/O?	No
Supports Pattern I/O?	Yes
Maximum Input Range	5.0 , 0.0 V
Maximum Output Range	5.0 , 0.0 V
Counter/Timers
Counters	2
Number of DMA Channels	2
Buffered Operations	Yes
Debouncing/Glitch Removal	Yes
GPS Synchronization	No
Maximum Range	5.0 , 0.0 V
Max Source Frequency	80 MHz
Minimum Input Pulse Width	12.500 ns
Pulse Generation	Yes
Resolution	32 bits
Timebase Stability	50.0 ppm
Logic Levels	TTL
Physical Specifications
Length	16.800 cm
Width	9.900 cm
I/O Connector	68-pin VHDCI female

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