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Getting Started with the NI 7831R

This document explains how to set up the National Instruments 7831R 
device.

Introduction

The NI 7831 is an R Series reconfigurable I/O (RIO) device with 96 digital 
I/O (DIO) lines, eight independent 16-bit analog output (AO) channels, and 
eight independent 16-bit analog input (AI) channels.

Traditional I/O devices have a fixed functionality provided by an 
application-specific integrated circuit (ASIC), but the NI 7831R has a 
field-programmable gate array (FPGA) that allows you to define device 
functionality and timing.

You can use the LabVIEW FPGA Module to graphically design the 
NI 7831R timing and functionality without having to learn a low-level 
programming language or a hardware description language (HDL) 
traditionally used for FPGA design. With the LabVIEW FPGA Module, 
you create or download a custom virtual instrument (VI) to the FPGA. 
You can reconfigure the NI 7831R device with a new VI at any time. 

You can use the LabVIEW Real-Time Module to communicate and control 
the NI 7831R device while performing additional tasks, such as real-time 
floating-point processing and data logging.

Note

If you are using LabVIEW but not the LabVIEW FPGA Module, you can create VIs 

that run in LabVIEW to control existing FPGA VIs, but you cannot create new FPGA VIs.

The NI 7831R device has Flash memory that you can use to store VIs. 
You can configure VIs to load to the FPGA and to run when the device 
powers up.

Summary of Contents for 7831R

Page 1: ...R timing and functionality without having to learn a low level programming language or a hardware description language HDL traditionally used for FPGA design With the LabVIEW FPGA Module you create or download a custom virtual instrument VI to the FPGA You can reconfigure the NI 7831R device with a new VI at any time You can use the LabVIEW Real Time Module to communicate and control the NI 7831R ...

Page 2: ...able at ni com manuals LabVIEW Help is available in LabVIEW by selecting Help VI Function How To Help PXI 7831R with Windows 2000 XP Use the following items to set up and use the PXI 7831R with Windows 2000 XP PXI 7831R device The following software packages LabVIEW 7 0 or later LabVIEW FPGA Module 1 0 or later required to develop custom FPGA VIs for the PXI 7831R device NI RIO 1 1 or later includ...

Page 3: ...up and use the PXI 7831R with the LabVIEW FPGA Module and the LabVIEW Real Time Module PXI 7831R device The following software packages LabVIEW 7 0 or later LabVIEW Real Time Module for ETS 7 0 or later LabVIEW FPGA Module 1 0 or later required to develop custom FPGA VIs for the PXI 7831R device NI RIO 1 0 or later included with the PXI 7831R PXI CompactPCI chassis and real time PXI controller One...

Page 4: ...ends refer to the NI Web site at ni com info and enter etspc One of the following host computers running Windows 2000 XP PC Laptop computer PXI CompactPCI embedded controller At least one cable and device for connecting signals to the PXI 7831R PCI 7831R with the LabVIEW Real Time Module 7 1 for RTX Use the following items to set up and use the PCI 7831R with the LabVIEW Real Time Module 7 1 for R...

Page 5: ... later for PCI and version 7 0 or later for PXI and the LabVIEW modules you will use with the NI 7831R before installing the NI RIO device drivers For LabVIEW installation instructions refer to the LabVIEW Release Notes 1 Install LabVIEW for Windows from the LabVIEW CD 2 If you are using the LabVIEW Real Time Module for ETS install the LabVIEW Real Time Module for ETS from the LabVIEW Real Time CD...

Page 6: ...your computer Installing Hardware This section describes how to unpack and install the PXI 7831R and the PCI 7831R devices Note You must install the NI RIO device drivers before installing the NI 7831R device Unpacking The NI 7831R device ships in an antistatic package to prevent electrostatic discharge from damaging device components To prevent such damage when handling the device take the follow...

Page 7: ...front panel of the PXI 7831R to the front panel mounting rails of the chassis 7 Visually verify the installation Make sure the PXI 7831R is not touching other devices or components and that the PXI 7831R is fully inserted into the slot 8 Plug in and power on the PXI or CompactPCI chassis PCI 7831R Installation You can install the PCI 7831R in any available PCI expansion slot in the computer To ach...

Page 8: ...the LabVIEW Real Time Module for RTX and RTX support from the NI RIO 1 1 Driver CD complete the following steps Note Before adding RTX support for the R Series device close all NI software 1 Select Start Program Files Venturcom RTX RTX RTX Properties 2 On the Plug and Play tab right click NI 7831R and select Add RTX INF Support 3 Click the Apply button RTX Properties returns a Warning dialog box C...

Page 9: ... The PCI 7831R now supports RTX When you launch LabVIEW the PCI 7831R appears in the LabVIEW Execution Target menu as FPGA Device PCI 7831R visa localhost RTRTX 0 RIO0 INSTR Removing RTX Support Complete the following steps to remove RTX support from the PCI 7831R 1 Close all NI software 2 Select Start Program Files Venturcom RTX RTX RTX Properties 3 On the Plug and Play tab right click NI 7831R a...

Page 10: ...nector with eight AI lines eight AO lines and 16 DIO lines Figure 1 shows the I O connector locations for the PXI 7831R and the PCI 7831R The I O connectors are numbered starting at zero Figure 1 NI 7831R Connector Locations Reconfigurable I O NI PXI 7831R CONNECTOR 0 MIO CONNECTOR 1 DIO CONNECTOR 2 DIO CONNECTOR 1 DIO CONNECTOR 2 DIO CONNECTOR 0 MIO ...

Page 11: ... DGND DGND DGND DGND DGND DGND 5V 5V DIO28 DIO30 DIO32 DIO34 DIO36 DIO38 DIO0 DIO2 DIO3 DIO5 DIO6 DIO7 DIO8 DIO1 DIO4 DIO9 DIO10 DIO11 DIO12 DIO13 DIO14 DIO15 DIO16 DIO17 DIO18 DIO19 DIO20 DIO21 DIO22 DIO23 DIO24 DIO25 DIO26 DIO27 DIO29 DIO31 DIO33 DIO35 DIO37 DIO39 1 35 2 36 3 37 4 38 5 39 6 40 7 41 8 42 9 43 10 44 11 45 12 46 13 47 14 48 15 49 16 50 17 51 18 52 19 53 20 54 21 55 22 56 23 57 24 5...

Page 12: ...e electrical and mechanical aspects of the PXI 7811R device and contains information concerning its operation and programming Table 1 Cabling Options Cable Connector Description SH68 C68 S MIO DIO For connecting signals from the MIO or DIO connector to the NI SCB 68 terminal block SHC68 68 RMIO MIO For connecting signals from the MIO connector to the SCB 68 terminal block Improves signal integrity...

Page 13: ... install the CompactRIO R Series Expansion chassis and CompactRIO I O modules Where to Go from Here Refer to the LabVIEW FPGA Module Release Notes for information about getting started with LabVIEW FPGA VIs and host VIs This document also provides examples for verifying that your software and hardware are properly installed To access this document select Start Programs National Instruments LabVIEW...

Page 14: ...ompany names mentioned herein are trademarks or trade names of their respective companies For patents covering National Instruments products refer to the appropriate location Help Patents in your software the patents txt file on your CD or ni com patents 2003 2004 National Instruments Corp All rights reserved 323256B 01 Apr 04 323256B 01 ...

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