Digital i/o module for pci express, 8 ai, 8 ao, 48 dio, 1 ms/s ai, 512 mb dram, kintex-7 160t fpga (9 pages)
Summary of Contents for National Instruments PXI-7811
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(217) 352-9330 | Click HERE Find the National Instruments PXI-7811 / PXI-7811R at our website:...
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Multifunction RIO NI R Series Multifunction RIO User Manual NI 781xR, NI 783xR, NI 784xR, and NI 785xR Devices R Series Multifunction RIO User Manual Français Deutsch ni.com/manuals June 2009 370489G-01 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Instruments Corporation. National Instruments respects the intellectual property of others, and we ask our users to do the same. NI software is protected by copyright and other intellectual property laws. Where NI software may be used to reproduce software or other materials belonging to others, you may use NI software only to reproduce materials that you may reproduce in accordance with the terms of any applicable license or other legal restriction.
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Contents Types of Signal Sources ....................2-8 Floating Signal Sources .................. 2-8 Ground-Referenced Signal Sources ..............2-8 Input Modes........................2-8 Differential Connection Considerations (DIFF Input Mode) ......2-10 Differential Connections for Ground-Referenced Signal Sources ... 2-11 Differential Connections for Nonreferenced or Floating Signal Sources ..............
About This Manual This manual describes the electrical and mechanical aspects of the National Instruments 781xR/783xR/784xR/785xR devices and contains information about programming and using the devices. Conventions The following conventions appear in this manual: This icon denotes a note, which alerts you to important information.
To access this document, refer to . In ni.com/manuals LabVIEW 8.0 or later, you can also view the LabVIEW Manuals directory that contains this document by selecting Start» All Programs»National Instruments»LabVIEW»LabVIEW Manuals. • LabVIEW Real-Time documentation – Getting Started with the LabVIEW Real-Time Module—Provides...
• PXI Software Specification Revision 2.1 • National Instruments Example Finder—LabVIEW contains an extensive library of VIs and example programs for use with R Series devices. To access the NI Example Finder, open LabVIEW and select Help»Find Examples, then select Hardware Input and Output»...
Chapter 1 Introduction instrument (VI) to the FPGA. Using the FPGA Module, you can graphically design the timing and functionality of the R Series device. If you only have LabVIEW but not the FPGA Module, you cannot create new FPGA VIs, but you can create VIs that run on Windows or a LabVIEW Real-Time (RT) target to control existing FPGA VIs.
Chapter 1 Introduction Flexible Functionality Flexible functionality allows the NI 78xxR to match individual application requirements and to mimic the functionality of fixed I/O devices. For example, you can configure an R Series device in one application for three 32-bit quadrature encoders and then reconfigure the R Series device in another application for eight 16-bit event counters.
Chapter 1 Introduction The FPGA does not retain the VI when the R Series device is powered off, so you must reload the VI each time you power on the device. You can load the VI from onboard Flash memory or from software over the bus interface. One advantage to using Flash memory is that the VI can start executing almost immediately after power up, instead of waiting for the computer to completely boot and load the FPGA VI.
Note If you use the R Series device without the FPGA Module, you can use the RIO Device Setup utility, available by selecting Start»All Programs»National Instruments» NI-RIO»RIO Device Setup to download precomplied FPGA VIs to the Flash memory of the R Series device. This utility installs with NI-RIO. You also can use the utility to...
Chapter 1 Introduction Cables and Accessories National Instruments offers a variety of products you can use with R Series devices, including cables, connector blocks, and other accessories, as shown in Table 1-3. Table 1-3. R Series Connectivity Options Connector NI 783xR/...
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Chapter 2 Hardware Overview of the NI 78xxR Calibration Configuration Flash DACs Input Mux Control Memory 16-Bit Instrumentation AI– Ampliflier – x4 Channels Input Mode Mux AISENSE User- Voltage Temperature AIGND Control Reference Sensor Configurable Data/Address/ Interface FPGA on RIO Control Calibration Address/Data...
Chapter 2 Hardware Overview of the NI 78xxR NI 7831R/7833R Overview The NI 7831R/7833R each have eight independent, 16-bit AI channels; eight independent, 16-bit AO channels; 96 bidirectional DIO lines that you can configure individually for input or output; and a Virtex-II XC2V3000 FPGA.
Chapter 2 Hardware Overview of the NI 78xxR Connecting Analog Input Signals The AI signals for the NI 783xR/784xR/785xR are AI<0..n>+, AI<0..n>–, AIGND, and AISENSE. For the NI 7830R, n=4. For the NI 7831R/7833R/ 784xR/785xR, n=8. The AI<0..n>+ and AI<0..n>– signals are connected to the eight AI channels of the NI 783xR/784xR/785xR.
Chapter 2 Hardware Overview of the NI 78xxR Types of Signal Sources When configuring the input channels and making signal connections, you must first determine whether the signal sources are floating or ground referenced. The following sections describe these two signal types. Floating Signal Sources A floating signal source is not connected to the building ground system but instead has an isolated ground-reference point.
Chapter 2 Hardware Overview of the NI 78xxR Differential Connection Considerations (DIFF Input Mode) In DIFF input mode, the NI 783xR/784xR/785xR measures the difference between the positive and negative inputs. DIFF input mode is ideal for measuring ground-referenced signals from other devices. When using DIFF input mode, the input signal connects to the positive input of the instrumentation amplifier and its reference signal, or return, connects to the negative input of the instrumentation amplifier.
Chapter 2 Hardware Overview of the NI 78xxR Differential Connections for Nonreferenced or Floating Signal Sources Figure 2-7 shows how to connect a floating signal source to a channel on the NI 783xR/784xR/785xR configured in DIFF input mode. Bias Resistors AI–...
Chapter 2 Hardware Overview of the NI 78xxR Use DIFF input connections for greater signal integrity for any input signal that does not meet the preceding conditions. You can configure the NI 783xR/784xR/785xR channels in software for RSE or NRSE input modes. Use the RSE input mode for floating signal sources.
Chapter 2 Hardware Overview of the NI 78xxR Common-Mode Signal Rejection Considerations Figure 2-6 and Figure 2-9 show connections for signal sources that are already referenced to some ground point with respect to the NI 783xR/784xR/785xR. In these cases, the instrumentation amplifier can reject any voltage caused by ground potential differences between the signal source and the device.
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Chapter 2 Hardware Overview of the NI 78xxR NI 7830R has one RMIO and one RDIO connector for a total of 56 DIO lines. The NI 7831R/7833R/784xR/785xR has one RMIO and two RDIO connectors for a total of 96 DIO lines. Refer to Figure A-1, NI 781xR Connector Pin Assignments and Locations,...
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Chapter 2 Hardware Overview of the NI 78xxR The SHC68-68-RDIO was designed specifically for R Series devices and is the NI-recommended cable for digital applications. If you are using the SH68-C68-S cable, however, please note the following considerations. The SH68-C68-S shielded cable contains 34 twisted pairs of conductors. To maximize the digital I/O available on the NI 78xxR, some of the DIO lines are twisted with power or ground and some DIO lines are twisted with other DIO lines.
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Chapter 2 Hardware Overview of the NI 78xxR wide. All of these lines connect to the FPGA on the NI PXI-781xR/783xR. The PXI local bus right lines on the NI PXI-781xR/783xR are PXI/PXI_Lbr<0..12>. The PXI local bus left lines on the NI PXI-781xR/783xR are PXI/PXI_Lbl<0..12>.
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Chapter 2 Hardware Overview of the NI 78xxR SW1, SW2, SW3 Figure 2-13. Switch Location on the NI PCI-781xR SW1, SW2, SW3 N I P X I- 78 11 R ec on fig ur ab le I/O Figure 2-14. Switch Location on the NI PXI-781xR R Series Multifunction RIO User Manual 2-24 ni.com...
Chapter 2 Hardware Overview of the NI 78xxR 1 2 3 1 2 3 a. Normal Operation (Default) b. Prevent VI From Loading Figure 2-17. Switch Settings Complete the following steps to prevent a VI stored in Flash memory from loading to the FPGA: Power off and unplug the PXI/CompactPCI chassis or PCI computer.
Chapter 2 Hardware Overview of the NI 78xxR Replace the blown fuse while referring to Figure 2-18 for the fuse locations. 1 NI PCIe-784xR/785xR Fuse Location 2 NI PXI-784xR/785xR Fuse Location Figure 2-18. NI 784xR/785xR Replacement Fuse Location (Littelfuse Part Number 0453004) Reinstall the PCI, PCI Express, or PXI device into the computer or PXI chassis.
Chapter 2 Hardware Overview of the NI 78xxR Field Wiring Considerations (NI 783xR/784xR/785xR Only) Environmental noise can seriously affect the measurement accuracy of the device if you do not take proper care when running signal wires between signal sources and the device. The following recommendations mainly apply to AI signal routing to the device, as well as signal routing in general.
The NI 78xxR Calibration Utility does not support NI 781xR devices. Note If you have NI-RIO installed, you can find the self-calibration utility at Start»All Programs»National Instruments»NI-RIO»Calibrate 78xxR Device. Device is the NI PXI-783xR/784xR/785xR or NI PCI-783xR device. Immediately after self-calibration, the only significant residual calibration error is gain error due to time and temperature drift of the onboard voltage reference.
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Appendix A Connecting I/O Signals To access the signals on the I/O connectors, you must connect a cable from the I/O connector to a signal accessory. Plug the small VHDCI connector end of the cable into the appropriate I/O connector and connect the other end of the cable to the appropriate signal accessory.
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Appendix A Connecting I/O Signals Connecting to 5B and SSR Analog Signal Conditioning (NI 783xR/784xR/785xR Only) NI provides cables that allow you to connect signals from the NI 783xR/784xR/785xR directly to 5B backplanes for analog signal conditioning and SSR backplanes for digital signal conditioning. The NSC68-262650 cable connects the signals on the NI 783xR/784xR/785xR RMIO connector directly to 5B and SSR backplanes.
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Appendix A Connecting I/O Signals You can plug each of these 50-pin headers directly into an 8-, 16-, 24-, or 32-channel SSR backplane for digital signal conditioning. One of the 50-pin headers contains DIO<0..23> from the NI 78xxR RDIO connector. These lines correspond to Slots <0..23>...
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Technical Support and Professional Services Visit the following sections of the award-winning National Instruments Web site at for technical support and professional services: ni.com • Support—Technical support at includes the ni.com/support following resources: – Self-Help Technical Resources—For answers and solutions,...
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Appendix C Technical Support and Professional Services • Declaration of Conformity (DoC)—A DoC is our claim of compliance with the Council of the European Communities using the manufacturer’s declaration of conformity. This system affords the user protection for electromagnetic compatibility (EMC) and product safety.