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National Instruments NI 781xR User Manual

Other manuals for NI 781xR: User Manual
Manual is about: NI R Series Intelligent DAQ

Summary of NI 781xR

  • Page 1

    Reconfigurable i/o ni 781 x r user manual reconfigurable i/o devices for pci and pxi/compactpci bus computers ni 781 x r user manual june 2006 371089d-01.

  • Page 2

    Support worldwide technical support and product information ni.Com national instruments corporate headquarters 11500 north mopac expressway austin, texas 78759-3504 usa tel: 512 683 0100 worldwide offices australia 1800 300 800, austria 43 0 662 45 79 90 0, belgium 32 0 2 757 00 20, brazil 55 11 326...

  • Page 3: Important Information

    Important information warranty the ni 781 x r is warranted against defects in materials and workmanship for a period of one year from the date of shipment, as evidenced by receipts or other documentation. National instruments will, at its option, repair or replace equipment that proves to be defecti...

  • Page 4: Compliance

    Compliance compliance with fcc/canada radio frequency interference regulations determining fcc class the federal communications commission (fcc) has rules to protect wireless communications from interference. The fcc places digital electronics into two classes. These classes are known as class a (fo...

  • Page 5: Contents

    © national instruments corporation v ni 781xr user manual contents about this manual conventions ...................................................................................................................Vii reconfigurable i/o documentation.......................................................

  • Page 6

    Contents ni 781xr user manual vi ni.Com appendix b connecting i/o signals appendix c using the scb-68 shielded connector block appendix d technical support and professional services glossary.

  • Page 7: About This Manual

    © national instruments corporation vii ni 781xr user manual about this manual this manual describes the electrical and mechanical aspects of the national instruments 781 x r devices, and contains information about programming and using the devices. Conventions the following conventions appear in thi...

  • Page 8

    About this manual ni 781xr user manual viii ni.Com monospace text in this font denotes text or characters that you should enter from the keyboard, sections of code, programming examples, and syntax examples. This font is also used for the proper names of disk drives, paths, directories, programs, su...

  • Page 9: Related Documentation

    About this manual © national instruments corporation ix ni 781xr user manual related documentation the following documents contain information you may find helpful: • picmg compactpci 2.0 r3.0 • pxi hardware specification revision 2.1 • pxi software specification revision 2.1 • pci specification rev...

  • Page 10: Introduction

    © national instruments corporation 1-1 ni 781xr user manual 1 introduction this chapter describes the ni 781 x r, the concept of the reconfigurable i/o (rio) device, optional software and equipment for using the ni 781 x r, and safety information about the ni 781 x r. About the reconfigurable i/o de...

  • Page 11: Using Pxi With Compactpci

    Chapter 1 introduction ni 781xr user manual 1-2 ni.Com you can add additional i/o channels and signal conditioning using the compactrio r series expansion chassis and compactrio i/o modules. Refer to appendix a, specifications , for detailed ni 781 x r specifications. Using pxi with compactpci using...

  • Page 12

    Chapter 1 introduction © national instruments corporation 1-3 ni 781xr user manual overview of reconfigurable i/o this section explains reconfigurable i/o and describes how to use the labview fpga module to build high-level functions in hardware. Refer to chapter 2, hardware overview of the ni 781xr...

  • Page 13

    Chapter 1 introduction ni 781xr user manual 1-4 ni.Com reconfigure the device in another application for four independent timed loops with separate i/o resources. User-defined i/o resources you can create your own custom measurements using the fixed i/o resources. For example, one application might ...

  • Page 14: Software Development

    Chapter 1 introduction © national instruments corporation 1-5 ni 781xr user manual software accesses the r series device through the bus interface. The fpga connects the bus interface and the fixed i/o to make possible timing, triggering, processing, and custom i/o measurements using the labview fpg...

  • Page 15

    Chapter 1 introduction ni 781xr user manual 1-6 ni.Com and functions to control the i/o, timing, and logic of the r series device and generate interrupts for synchronization. Select help»search the labview help to view the labview help . In the labview help , use the contents tab to browse to the fp...

  • Page 16: Custom Cabling

    Chapter 1 introduction © national instruments corporation 1-7 ni 781xr user manual cables and optional equipment national instruments offers a variety of products you can use with r series devices, including cables, connector blocks, and other accessories listed in table 1-2. Refer to appendix b, co...

  • Page 17: Safety Information

    Chapter 1 introduction ni 781xr user manual 1-8 ni.Com safety information the following section contains important safety information that you must follow when installing and using the ni 781 x r. Do not operate the ni 781 x r in a manner not specified in this document. Misuse of the ni 781 x r can ...

  • Page 18

    Chapter 1 introduction © national instruments corporation 1-9 ni 781xr user manual operate the ni 781 x r at or below the measurement category 1 listed in the environmental section of appendix a, specifications . Measurement circuits are subjected to working voltages 2 and transient stresses (overvo...

  • Page 19: Hardware Overview

    © national instruments corporation 2-1 ni 781xr user manual 2 hardware overview of the ni 781 x r this chapter presents an overview of the hardware functions and i/o connectors on the ni 781 x r. Figure 2-1 shows a block diagram for the ni 781 x r. Figure 2-1. Ni 781 x r block diagram configur ation...

  • Page 20: Ni 7811R Overview

    Chapter 2 hardware overview of the ni 781xr ni 781xr user manual 2-2 ni.Com ni 7811r overview the ni 7811r has 160 bidirectional dio lines and a one million gate fpga. Ni 7813r overview the ni 7813r has 160 bidirectional dio lines and a three million gate fpga. Digital i/o you can configure the ni 7...

  • Page 21

    Chapter 2 hardware overview of the ni 781xr © national instruments corporation 2-3 ni 781xr user manual caution exceeding the maximum input voltage ratings listed in table b-2, ni 781xr i/o signal summary , can damage the ni 781 x r and the computer. Ni is not liable for any damage resulting from su...

  • Page 22: Rtsi Trigger Bus

    Chapter 2 hardware overview of the ni 781xr ni 781xr user manual 2-4 ni.Com figure 2-2 shows dio configured for digital input and dio configured for digital output. Digital input applications include receiving ttl, lvttl, cmos, or lvcmos signals and sensing external device states, such as the state ...

  • Page 23: Pxi Local Bus

    Chapter 2 hardware overview of the ni 781xr © national instruments corporation 2-5 ni 781xr user manual lines are labeled rtsi/trig and rtsi/osc. On the ni pxi-781 x r, the rtsi trigger lines are labeled pxi/trig. In addition, the ni pxi-781 x r can use the pxi star trigger line to send or receive t...

  • Page 24: Switch Settings

    Chapter 2 hardware overview of the ni 781xr ni 781xr user manual 2-6 ni.Com caution do not drive the same pxi local bus line with the ni pxi-781 x r and another device simultaneously. Such signal driving can damage both devices. Ni is not liable for any damage resulting from such signal driving. The...

  • Page 25

    Chapter 2 hardware overview of the ni 781xr © national instruments corporation 2-7 ni 781xr user manual figure 2-3. Switch location on the ni pxi-781 x r ni pxi- 7811r reconfigur able i/o connect or 2 (dio) connect or 3 (dio) sw1, sw2, sw3.

  • Page 26

    Chapter 2 hardware overview of the ni 781xr ni 781xr user manual 2-8 ni.Com figure 2-4. Switch location on the ni pci-781 x r figure 2-5. Switch settings sw1, sw2, sw3 1 2 3 on a. Normal operation (default) 1 2 3 on b. Prevent vi from loading.

  • Page 27: Power Connections

    Chapter 2 hardware overview of the ni 781xr © national instruments corporation 2-9 ni 781xr user manual complete the following steps to prevent a vi stored in flash memory from loading to the fpga: 1. Power off and unplug the pc or the pxi/compactpci chassis. 2. Remove the ni 781 x r from the pci or...

  • Page 28: Specifications

    © national instruments corporation a-1 ni 781xr user manual a specifications this appendix lists the specifications of the ni 781 x r. These specifications are typical at 25 °c unless otherwise noted. Digital i/o number of channels ............................... 160 input/output compatibility ........

  • Page 29

    Appendix a specifications ni 781xr user manual a-2 ni.Com reconfigurable fpga number of logic slices ni 7811r .........................................5,120 ni 7813r .........................................14,336 equivalent number of logic cells ni 7811r .........................................11,...

  • Page 30

    Appendix a specifications © national instruments corporation a-3 ni 781xr user manual power requirement +5 vdc (±5%) ni 7811r......................................... 9 ma (typ), 50 ma (max) 1 ni 7813r......................................... 9 ma (typ), 50 ma (max) 1 +3.3 vdc (±5%) ni 7811r...........

  • Page 31

    Appendix a specifications ni 781xr user manual a-4 ni.Com environmental operating environment the ni 781 x r is intended for indoor use only. Ambient temperature range ....................0 °c to 55 °c, tested in accordance with iec-60068-2-1 and iec-60068-2-2 relative humidity range...................

  • Page 32

    Appendix a specifications © national instruments corporation a-5 ni 781xr user manual safety the ni 781 x r is designed to meet the requirements of the following standards of safety for electrical equipment for measurement, control, and laboratory use: • iec 61010-1, en 61010-1 • ul 61010-1, can/csa...

  • Page 33: Connecting I/o Signals

    © national instruments corporation b-1 ni 781xr user manual b connecting i/o signals this appendix describes how to make input and output signal connections to the ni 781 x r i/o connectors. The ni 781 x r has four dio connectors with 40 dio lines per connector. Figure b-1 shows the i/o connector lo...

  • Page 34

    Appendix b connecting i/o signals ni 781xr user manual b-2 ni.Com figure b-1. Ni 781 x r connector locations 1 connector overlay for the ni pxi-781 x 2 connector overlay for the ni pci-781 x connect or 0 (dio) connect or 1 (dio) connect or 2 (dio) connect or 3 (dio) connect or 3 (dio) connect or 2 (...

  • Page 35

    Appendix b connecting i/o signals © national instruments corporation b-3 ni 781xr user manual figure b-2 shows the i/o connector pin assignments for the i/o connectors on the ni 781 x r. Figure b-2. Ni 781 x r i/o connector pin assignments to access the signals on the i/o connectors, you must connec...

  • Page 36

    Appendix b connecting i/o signals ni 781xr user manual b-4 ni.Com end of the cable into the appropriate i/o connector and connect the other end of the cable to the appropriate signal accessory. Caution connections that exceed any of the maximum ratings of input or output signals on the ni 781 x r ca...

  • Page 37

    Appendix b connecting i/o signals © national instruments corporation b-5 ni 781xr user manual connecting to ssr signal conditioning ni provides cables that allow you to connect signals from the ni 781 x r directly to ssr backplanes for digital signal conditioning. The nsc68-5050 cable is designed to...

  • Page 38

    Appendix b connecting i/o signals ni 781xr user manual b-6 ni.Com figure b-3. Connector pinouts for use with the nsc68-5050 cable 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 dio23 dio22 dio21 dio20 dio19...

  • Page 39: Using The Scb-68

    © national instruments corporation c-1 ni 781xr user manual c using the scb-68 shielded connector block this appendix describes how to connect input and output signals to the ni 781 x r with the scb-68 shielded connector block. The scb-68 has 68 screw terminals for i/o signal connections. To use the...

  • Page 40: Technical Support and

    © national instruments corporation d-1 ni 781xr user manual d technical support and professional services visit the following sections of the national instruments web site at ni.Com for technical support and professional services: • support —online technical support resources at ni.Com/support inclu...

  • Page 41

    Appendix d technical support and professional services ni 781xr user manual d-2 ni.Com • calibration certificate —if your product supports calibration, you can obtain the calibration certificate for your product at ni.Com/calibration . If you searched ni.Com and could not find the answers you need, ...

  • Page 42: Glossary

    © national instruments corporation g-1 ni 781 x r user manual glossary symbol prefix value p pico 10 –12 µ micro 10 – 6 m milli 10 –3 m mega 10 6 a a amperes. Asic application-specific integrated circuit—a proprietary semiconductor component designed and manufactured to perform a set of specific fun...

  • Page 43

    Glossary ni 781 x r user manual g-2 © national instruments corporation cmrr common-mode rejection ratio—a measure of an instrument’s ability to reject interference from a common-mode signal, usually expressed in decibels (db). Common-mode voltage any voltage present at the instrumentation amplifier ...

  • Page 44

    Glossary © national instruments corporation g-3 ni 781 x r user manual e eeprom electrically erasable programmable read-only memory—rom that can be erased with an electrical signal and reprogrammed. F fpga field-programmable gate array. Fpga vi a configuration that is downloaded to the fpga and that...

  • Page 45

    Glossary ni 781 x r user manual g-4 © national instruments corporation m m meter. Max maximum. Mimo multiple input, multiple output. Min minimum. Mio multifunction i/o. Monotonicity a characteristic of a dac in which the analog output always increases as the values of the digital code input to it in...

  • Page 46

    Glossary © national instruments corporation g-5 ni 781 x r user manual p pci peripheral component interconnect—a high-performance expansion bus architecture originally developed by intel to replace isa and eisa. It is achieving widespread acceptance as a standard for pcs and workstations. Pci offers...

  • Page 47

    Glossary ni 781 x r user manual g-6 © national instruments corporation s s seconds. S samples. S/s samples per second—used to express the rate at which a daq board samples an analog signal. Signal conditioning the manipulation of signals to prepare them for digitizing. Slew rate the voltage rate of ...

  • Page 48

    Glossary © national instruments corporation g-7 ni 781 x r user manual v oh volts, output high. V ol volts, output low. V rms volts, root mean square. W waveform multiple voltage readings taken at a specific sampling rate..