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NI PCI-7831R

R Series Multifunction RIO with Virtex-II 1M Gate FPGA

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  • Not recommended for new designs.
  • 8 analog inputs, independent sampling rates up to 200 kHz, 16-bit resolution, ±10 V
  • 8 analog outputs, independent update rates up to 1 MHz, 16-bit resolution, ±10 V
  • 96 digital lines configurable as inputs, outputs, counters, or custom logic at rates up to 40 MHz
  • Virtex-II 1M gate FPGA programmable with the LabVIEW FPGA Module
  • Connectivity to the NI 9151 for I/O expansion and low-cost signal conditioning


The NI PCI-7831R multifunction RIO board features a user-programmable FPGA chip for onboard processing and flexible I/O operation. You configure all analog and digital functionality using NI LabVIEW graphical block diagrams and 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 the following:

-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, pulse-width modulation, flexible encoder inputs, or specialized communication protocols

NI R Series multifunction RIO devices feature a dedicated analog-to-digital converter (ADC) per channel for independent timing and triggering. This offers specialized functionality such as multirate sampling and individual channel triggering, which are outside the capabilities of typical data acquisition hardware. Common examples include custom discrete and analog control, sensor simulation, rapid prototyping, hardware-in-the-loop (HIL) test, digital protocol emulation, and other applications that require precise timing and control.

Recommended Accessories
The NI SHC68-68-RMIO cable is designed and shielded specifically for the multifunction I/O connector (connector 0) of R Series devices. The NI SHC68-68-RDIO cable is designed and shielded specifically for the digital I/O connectors (connectors 1 and 2) on R Series devices to reduce crosstalk for improved signal integrity and noise rejection.

Low-Cost, High-Performance Signal Conditioning
The NI 9151 R Series expansion chassis connects directly to any digital connector on R Series devices and houses up to four NI C Series I/O modules for low-cost signal conditioning, I/O channel expansion, and direct connectivity.

Specifications Documents

View Data Sheet

Specifications Summary

General
Product Name PCI-7831R
Product Family Multifunction Data Acquisition
Form Factor PCI
Part Number 778797-01
Operating System/Target Real-Time , FPGA , Windows
LabVIEW RT Support Yes
DAQ Product Family R Series
Measurement Type RVDT , Filters , Frequency , Voltage , LVDT , Quadrature encoder
RoHS Compliant No
Signal Conditioning Low-pass filtering , Deglitch filter
Analog Input
Channels 8
Single-Ended Channels 8
Differential Channels 8
Resolution 16 bits
Sample Rate 200 kS/s
Max Voltage 10 V
Maximum Voltage Range -10 V , 10 V
Maximum Voltage Range Accuracy 7.78 mV
Maximum Voltage Range Sensitivity 0.305 mV
Minimum Voltage Range -10 V , 10 V
Minimum Voltage Range Accuracy 7.78 mV
Minimum Voltage Range Sensitivity 0.305 mV
Number of Ranges 1
Simultaneous Sampling Yes
On-Board Memory 80 kB
Analog Output
Channels 8
Resolution 16 bits
Max Voltage 10 V
Maximum Voltage Range -10 V , 10 V
Maximum Voltage Range Accuracy 5.88 mV
Maximum Voltage Range Sensitivity 0.305 mV
Minimum Voltage Range -10 V , 10 V
Minimum Voltage Range Accuracy 5.88 mV
Minimum Voltage Range Sensitivity 0.305 mV
Update Rate 1 MS/s
Current Drive Single 2.5 mA
Current Drive All 20 mA
Digital I/O
Bidirectional Channels 96
Input-Only Channels 0
Output-Only Channels 0
Number of Channels 96 , 0
Timing Hardware
Max Clock Rate 40 MHz
Logic Levels TTL , 2.5 V , 3.3 V , LVTTL
Input Current Flow Sinking , Sourcing
Output Current Flow Sinking , Sourcing
Programmable Input Filters Yes
Supports Programmable Power-Up States? Yes
Current Drive Single 5 mA
Current Drive All 480 mA
Watchdog Timer Yes
Supports Handshaking I/O? Yes
Supports Pattern I/O? Yes
Maximum Input Range 0 V , 5 V
Maximum Output Range 0 V , 3.3 V
Counter/Timers
Counters 96
Number of DMA Channels 3
Buffered Operations Yes
Debouncing/Glitch Removal Yes
GPS Synchronization No
Maximum Range 0 V , 5 V
Max Source Frequency 40 MHz
Minimum Input Pulse Width 12.5 ns
Pulse Generation Yes
Resolution 64 bits
Timebase Stability 100 ppm
Logic Levels TTL , 2.5 V , 3.3 V , LVTTL
Reconfigurable FPGA
FPGA Type Virtex-II 1M
Physical Specifications
Length 17 cm
Width 11 cm
I/O Connector 68-pin VHDCI female
Timing/Triggering/Synchronization
Triggering Digital , Analog
Synchronization Bus (RTSI) Yes

NI PCI-7831R Complete Package

Each NI PCI-7831R requires:

3 Connector Block 3 Cable NI PCI-7831R Software

Roll over icons above to learn why you need each item in the package.

NI PCI-7831R and Accessories

Hardware Subtotal: $ 4,309
NI PCI-7831R - 778797-01 Qty $ 2,999 each
Required Accessories
Connector 0 - Analog
Connector Block - Screw Terminal
SCB-68 - 776844-01
Qty $ 319 each
Cable - Shielded
Qty $ 135 each
Connector 1 - 2 - Digital
Connector Block - Screw Terminal
SCB-68 - 776844-01
Qty $ 319 each
Cable - Shielded
Qty $ 109 each
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Since your device does not have direct signal connectivity, you need a connector block to act as an interface between your sensors/signals and your device. A connector block provides easy access to the inputs and outputs of your hardware.
You need a cable to transmit signals between your device and your signal connections on your connector block.
This device requires the LabVIEW FPGA Module (sold separately) and NI-RIO driver software (included with the hardware). LabVIEW and the LabVIEW FPGA Module deliver graphical development for field-programmable gate array (FPGA) chips on NI reconfigurable I/O (RIO) hardware targets.

You have selected United States as the country where you will use the product(s) (change).

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

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