- Two 16-bit analog outputs (833 kS/s); 24 digital I/O; 32-bit counters
- NIST-traceable calibration certificate and more than 70 signal conditioning options
- Correlated DIO (8 clocked lines, 1 MHz)
- NI-MCal calibration technology for increased measurement accuracy
- Select high-speed M Series for 5X faster sampling rates or high-accuracy M Series for 4X resolution.
- NI-DAQmx driver software and NI LabVIEW SignalExpress interactive data-logging software
 Data Sheet
Please select the country where you will use the product(s) so that we can provide you with accurate pricing, availability, and purchasing information
The National Instruments PCI-6221 is a low-cost multifunction M Series data acquisition (DAQ) board optimized for cost-sensitive applications. Also consider the high-speed M Series devices for 5X faster sampling rates or the high-accuracy M Series devices for 4X resolution and superior measurement accuracy.
Low-cost 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. 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
Every M Series data acquisition device includes a copy of NI LabVIEW SignalExpress so you can quickly acquire, analyze, and present data without programming. In addition to LabVIEW SignalExpress, 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; 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 | |
|---|
| Form Factor | PCI |
|---|
| OS Support | Windows, Real-Time, Linux, Mac OS |
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| Measurement Type | Voltage |
|---|
| DAQ Product Family | M Series |
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| LabVIEW RT Support | Yes |
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| Analog Input | |
|---|
| Number of Channels | 16 SE/8 DI |
|---|
| Sample Rate | 250 kS/s |
|---|
| 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 | 3100 µV |
|---|
| Range Sensitivity | 97.6 µV |
|---|
| Minimum Voltage Range | -200..200 mV |
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| Range Accuracy | 112 µV |
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| Range Sensitivity | 5.2 µV |
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| Number of Ranges | 4 |
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| On-Board Memory | 4095 samples |
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| Analog Output | |
|---|
| Number of Channels | 2 |
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| Update Rate | 833 kS/s |
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| Resolution | 16 bits |
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| Maximum Voltage Range | -10..10 V |
|---|
| Range Accuracy | 3230 µV |
|---|
| Minimum Voltage Range | -10..10 V |
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| Range Accuracy | 3230 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 |
|---|
| Maximum Clock Rate | 1 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 |
|---|
| Programmable Input Filters | Yes |
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| Output Current Flow | Sinking, Sourcing |
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| Current Drive (Channel/Total) | 24 mA/448 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 |
|---|
| Pulse Generation | Yes |
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| Buffered Operations | Yes |
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| Debouncing/Glitch Removal | Yes |
|---|
| Number of DMA Channels | 2 |
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| Timing/Triggering/Synchronization | |
|---|
| Synchronization Bus (RTSI) | Yes |
|---|
| Triggering | Digital |
|---|
| Physical Specifications | |
|---|
| Length | 15.5 cm |
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| Width | 9.7 cm |
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| I/O Connector | 68-pin VHDCI female |
|---|
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 PCI-6221.
| 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
Please select the country where you will use the product(s) so that we can provide you with accurate pricing, availability, and purchasing information
|
