- 160 digital lines configurable as inputs, outputs, counters, or custom logic at rates up to 40 MHz
- User-defined triggering, timing, and onboard decision making with 25 ns resolution
- Built-in examples for I2C, SPI, S/PDIF, RS232 and other digital communication protocols
- Connectivity to the NI cRIO-9151 for analog and digital I/O expansion/signal conditioning
- High-speed digital pattern generation with 80 KB of onboard memory and DMA data streaming
- 1M gate reconfigurable I/O (RIO) FPGA for parallel processing power
 Data Sheet |
Configure System 
View Diagram 
Select one of the following options for product configuration and pricing:
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The National Instruments PXI-7811R features user-defined, onboard processing for complete flexibility of system timing and triggering. Instead of a fixed ASIC for controlling device functionality, R Series intelligent DAQ uses an FPGA-based system timing controller to make all 160 digital I/O lines configurable for application-specific operation. The FPGA chip is configured by creating LabVIEW block diagrams with the LabVIEW FPGA Module. Your block diagram executes in the hardware, giving you direct, immediate control over all I/O signals to deliver high-performance capabilities such as:
- Complete control over the synchronization and timing of all signals and operations
- Custom onboard decision making that executes with hardware-timed speed and reliability
- Digital lines individually configurable as inputs, outputs, counter/timers, PWM, flexible encoder inputs, or specialized communication protocols
With intelligent DAQ and LabVIEW FPGA, you can configure user-defined hardware for a wide variety of applications, such as custom digital data acquisition, high-speed waveform generation, sensor simulation, hardware-in-the-loop (HIL) test, digital protocol emulation, bit error rate testing, and other applications that require precise timing and control.
Recommended Accessories
The SHC-68-68-RDIO cable is designed and shielded specifically for the DIO connectors on intelligent DAQ devices for improved signal integrity when connected to terminal blocks or the cRIO-9151 R Series expansion chassis.
Low-Cost, High-Performance Signal Conditioning for R Series Intelligent DAQ
The cRIO-9151 R Series expansion chassis connects directly to any digital connector on R Series intelligent DAQ devices and houses up to four C Series I/O modules for low-cost signal conditioning, analog I/O expansion and direct connectivity. For more information on I/O availability, please reference the related links below.
Additional Product Information
Related Information
Specifications Documents
Specifications Summary
| General | |
|---|
| Form Factor | PXI |
|---|
| OS Support | Windows, Real-Time |
|---|
| Measurement Type | Digital, Filters, Frequency, Quadrature encoder |
|---|
| DAQ Product Family | R Series |
|---|
| LabVIEW RT Support | Yes |
|---|
| Analog Input | |
|---|
| Number of Channels | 0 |
|---|
| Analog Output | |
|---|
| Number of Channels | 0 |
|---|
| Digital I/O | |
|---|
| Number of Channels | 160 DIO |
|---|
| Timing | Hardware |
|---|
| Maximum Clock Rate | 40 MHz |
|---|
| Logic Levels | TTL, LVTTL, 3.3 V, 5 V |
|---|
| Maximum Input Range | 0..5 V |
|---|
| Maximum Output Range | 0..3.3 V |
|---|
| Input Current Flow | Sinking, Sourcing |
|---|
| Programmable Input Filters | Yes |
|---|
| Output Current Flow | Sinking, Sourcing |
|---|
| Current Drive (Channel/Total) | 5 mA/800 mA |
|---|
| Watchdog Timer | Yes |
|---|
| Supports Programmable Power-Up States? | Yes |
|---|
| Supports Handshaking I/O? | Yes |
|---|
| Supports Pattern I/O? | Yes |
|---|
| Counter/Timers | |
|---|
| Number of Counter/Timers | 160 |
|---|
| Resolution | 64 bits |
|---|
| Maximum Source Frequency | 40 MHz |
|---|
| Minimum Input Pulse Width | 12.5 ns |
|---|
| Logic Levels | 3.3 V, 5 V, LVTTL, TTL |
|---|
| Maximum Range | 0..5 V |
|---|
| Timebase Stability | 100 ppm |
|---|
| GPS Synchronization | No |
|---|
| Pulse Generation | Yes |
|---|
| Buffered Operations | Yes |
|---|
| Debouncing/Glitch Removal | Yes |
|---|
| Number of DMA Channels | 3 |
|---|
| Timing/Triggering/Synchronization | |
|---|
| Triggering | Digital |
|---|
| Physical Specifications | |
|---|
| Length | 16 cm |
|---|
| Width | 10 cm |
|---|
| I/O Connector | 68-pin VHDCI female |
|---|
System Assurance Programs
Reduce your setup time and total cost of ownership, and get a system you can use out of the box with National Instruments system assurance programs. System assurance programs include:
- Installation and integration test of all individual hardware
- Courtesy installation of system driver sets and application development environments
- Three-year warranty and calibration coverage
- Custom documentation plus a custom restore and startup utility
This service is only available for PXI, NI CompactRIO, and NI Compact FieldPoint systems.
Extended Warranties
National Instruments designs and manufactures all products to minimize failures, however 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. In addition, they offer the following benefits:
- 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 restore the hardware to manufacturing specifications
For more information about your warranty options:
Calibration
NI recognizes the need to maintain properly calibrated devices for high-accuracy measurements. NI provides manual calibration procedures, services to recalibrate your products, and automated calibration software to calibrate many NI measurement products.
Training
NI training is the fastest, most certain route to productivity with NI tools and successful application development.
Repair Services
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 restore the hardware to manufacturing specifications.
Technical Support
ni.com/support
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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
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
Please select the country where you will use the product(s) so that we can provide you with accurate pricing, availability, and purchasing information
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