- 8 analog inputs, independent sampling rates up to 200 kHz, 16-bit resolution, ±10 V
- 8 analog outputs, independent update rates up to 1.0 MHz, 16-bit resolution, ±10 V
- Connectivity to the NI cRIO-9151 for I/O expansion and low-cost signal conditioning
- User-defined triggering, timing, and onboard decision making with 25 ns resolution
- 1M gate reconfigurable I/O (RIO) FPGA for parallel processing power
- 96 digital lines configurable as inputs, outputs, counters, or custom logic at rates up to 40 MHz
 Data Sheet
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The National Instruments PCI-7831R 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 analog and digital I/O 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 advanced data acquisition with multirate sampling, custom discrete and analog control, 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 SHC68-68-RMIO cable is designed and shielded specifically for the MIO connector (connector 0) of multifunction intelligent DAQ devices. The SHC-68-68-RDIO cable is designed and shielded specifically for the DIO connectors (connectors 1 and 2) 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, I/O channel 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 | |
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| Form Factor | PCI |
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| OS Support | Windows, Real-Time |
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| Measurement Type | Filters, Frequency, LVDT, Quadrature encoder, RVDT, Voltage |
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| DAQ Product Family | R Series |
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| LabVIEW RT Support | Yes |
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| Analog Input | |
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| Number of Channels | 8 SE/8 DI |
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| Sample Rate | 200 kS/s/ch |
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| Resolution | 16 bits |
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| Simultaneous Sampling | Yes |
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| Maximum Voltage Range | -10..10 V |
|---|
| Range Accuracy | 7.78 mV |
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| Range Sensitivity | 0.305 mV |
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| Minimum Voltage Range | -10..10 V |
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| Range Accuracy | 7.78 mV |
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| Range Sensitivity | 0.305 mV |
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| Number of Ranges | 1 |
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| On-Board Memory | 80 kB |
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| Signal Conditioning | Deglitch filter, Low-pass filtering |
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| Analog Output | |
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| Number of Channels | 8 |
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| Update Rate | 1 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 | 5.88 mV |
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| Range Sensitivity | 0.305 mV |
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| Minimum Voltage Range | -10..10 V |
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| Range Accuracy | 5.88 mV |
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| Range Sensitivity | 0.305 mV |
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| Current Drive (Channel/Total) | 2.5 mA/20 mA |
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| Digital I/O | |
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| Number of Channels | 96 DIO |
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| Timing | Hardware |
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| Maximum Clock Rate | 40 MHz |
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| Logic Levels | TTL, LVTTL, 2.5 V, 3.3 V |
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| Maximum Input Range | 0..5 V |
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| Maximum Output Range | 0..3.3 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) | 5 mA/480 mA |
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| Watchdog Timer | Yes |
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| Supports Programmable Power-Up States? | Yes |
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| Supports Handshaking I/O? | Yes |
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| Supports Pattern I/O? | Yes |
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| Counter/Timers | |
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| Number of Counter/Timers | 96 |
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| Resolution | 64 bits |
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| Maximum Source Frequency | 40 MHz |
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| Minimum Input Pulse Width | 12.5 ns |
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| Logic Levels | 2.5 V, 3.3 V, LVTTL, TTL |
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| Maximum Range | 0..5 V |
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| Timebase Stability | 100 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 | 3 |
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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 | 17 cm |
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| Width | 11 cm |
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| I/O Connector | 68-pin VHDCI female |
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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
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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
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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