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National Instruments 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 ...
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National Instruments NI 781xR - page 2
Support Worldwide Technical Support and Product Info rmation ni.com National Instruments Corporate Headquarters 11500 North Mopac Expressway Aust in, 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 3262 3599, Canada 800 433 3488, China 86 21 6555 78 ...
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National Instruments NI 781xR - page 3
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 r eceipts or other documentation. National In struments will, at its option, repair or replac e equipment that proves to be defective during the warranty period. This warranty in ...
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National Instruments NI 781xR - page 4
Compliance Compliance with FCC/Canada Radio Frequency Interference Regulations Determining FCC Class The Federal Communications Commission (FCC) has rules to protect wireless co mmunications from inte rference. The FCC places digital electronics into two classes. These classes are known as Class A (for use in industrial-commercial locations onl y) ...
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National Instruments NI 781xR - page 5
© National Instruments Corpor ation v NI 781x R User Manual Contents About This Manual Conventions ............ .............. .............. .............. .............. .............. ............... .............. .... v ii Reconfigurable I/O Documentation ..................... ........... .............. ............... .............. .... vii ...
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National Instruments NI 781xR - page 6
Contents NI 781x R User Manual vi ni.com Appendix B Connecting I/O Signals Appendix C Using the SCB-68 Shie lded Connector Block Appendix D Technical Support and Professional Services Glossary ...
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National Instruments NI 781xR - page 7
© National Instruments Corpor ation vii NI 781x R 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 t he devices. Conventions The following con ventions appear in this manual: < > Angle brackets that cont ...
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National Instruments NI 781xR - page 8
About This Manual NI 781x R User Manual viii ni.com monospace T ext in this font denotes text or ch aracters that you should ent er from the keyboard, sections of code, programming examples, and syntax examples. This font is also used for the proper na mes of disk dri ves, paths, directories, programs, subprograms, su broutines, d evice names, func ...
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National Instruments NI 781xR - page 9
About This Manual © National Instruments Corpor ation ix NI 781x R User Manual Related Documentation The following documents contain information you may find helpful: • PICMG CompactPCI 2.0 R3.0 • PXI Hardware Specifica tion Revision 2.1 • PXI Software Specification Revision 2.1 • PCI Specification Revision 3.0 ...
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National Instruments NI 781xR - page 10
© National Instruments Corpor ation 1-1 NI 781x R User Manual 1 Introduction This chapter describes the NI 781 x R, the concept of the Reconfigurable I/O (RIO) device, optional software and equipm ent for using the N I 781 x R, and safety informatio n about the NI 781 x R. About the Reconfigurable I/O Devices The NI 781 x R devices are R Series RI ...
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National Instruments NI 781xR - page 11
Chapter 1 Introduction NI 781x R User Manual 1-2 ni.com Y ou can add additi onal I/O channels and signal conditioning usin g 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 PXI-compatib le products with st andard Compa ...
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National Instruments NI 781xR - page 12
Chapter 1 Introduction © National Instruments Corpor ation 1-3 NI 781x R User Manual Over view 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 781x R , for descriptions of the I/O resources on t ...
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National Instruments NI 781xR - page 13
Chapter 1 Introduction NI 781x R User Manual 1-4 ni.com reconfigure the de vice in another application for fou r independent timed loops with separate I/O resources. User -Defined I/O Resources You can create your own custom m easurements using the fixed I/O resources. For example, one application migh t require an event counter that increments whe ...
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National Instruments NI 781xR - page 14
Chapter 1 Introduction © National Instruments Corpor ation 1-5 NI 781x R User Manual Software accesses the R Series device through the bus interf ace. The FPGA connects the bus interf ace and the fix ed I/O to make possible timing, triggeri ng, processing , and custom I/O measurements using the LabVIEW FPGA Module. The FPGA logic provides timing, ...
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National Instruments NI 781xR - page 15
Chapter 1 Introduction NI 781x R User Manual 1-6 ni.com and functions to control the I/O, timi ng, and logic of the R Series device and generate interrupts for synch ronization. Select Help»Search the LabVIEW Help t o v i e w t h e LabVIEW Hel p . In the LabVIEW Help , use the Contents tab to bro wse to the FPGA Interface book for more inform atio ...
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National Instruments NI 781xR - page 16
Chapter 1 Introduction © National Instruments Corpor ation 1-7 NI 781x R User Manual Cables and Optional Equipment National Instruments offers a v ariety of product s you can use with R Series devices, including cables, connector bloc ks, and other accessories listed in Table 1-2. Refer to Appendix B, Connecting I/O Signals , for m ore information ...
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National Instruments NI 781xR - page 17
Chapter 1 Introduction NI 781x R User Manual 1-8 ni.com Safety Information The following section contains important safety info rmation that you must follow when installi ng and using the NI 781 x R. Do not operate the NI 781 x R in a manner not specifi ed in this document. Misuse of the NI 781 x R can result in a hazard. Y ou can compromise the sa ...
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National Instruments NI 781xR - page 18
Chapter 1 Introduction © National Instruments Corpor ation 1-9 NI 781x R User Manual Operate the NI 781 x R at or below the measurement category 1 li sted in the Environmental section of Append ix A, Specifications . Measurement circuits are subjected to working voltages 2 and transient stresses (overv oltage) from the circuit to which they are co ...
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National Instruments NI 781xR - page 19
© National Instruments Corpor ation 2-1 NI 781x R User Manual 2 Hardware Over view 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 Configuration Configuration Control Connector 0 (DIO) Connec ...
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National Instruments NI 781xR - page 20
Chapter 2 Hardware Overview of the NI 781x R NI 781x R User Manual 2-2 ni.com NI 7811R Over view The NI 7811R has 160 bidirectional DIO lines and a one million gate FPGA. NI 7813R Over view The NI 7813R has 160 bidirectional DIO lines and a three million gate FPGA. Digital I/O You can configure the NI 781 x R DIO lines i ndividually for eith er inp ...
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National Instruments NI 781xR - page 21
Chapte r 2 Hardware Ov erview of the N I 781x R © National Instruments Corpor ation 2-3 NI 781x R User Manual Caution Exceeding the maximum input voltag e ratings listed in T able B-2, NI 7 81x R I/O Signal Summa ry , can damage the NI 781 x R and the computer . NI is not liable for an y damage resulting from such si gnal connections. Caution Do n ...
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National Instruments NI 781xR - page 22
Chapter 2 Hardware Overview of the NI 781x R NI 781x R User Manual 2-4 ni.com Figure 2-2 shows DIO<0..3> conf igured for digital input and DIO<4..7> configured for digital ou tput. Digital input appli cations include recei ving TTL, L VTTL, CMOS, or L V CMOS si gnals and sensing external de vice states, such as the state of the switc h ...
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National Instruments NI 781xR - page 23
Chapte r 2 Hardware Ov erview of the N I 781x R © National Instruments Corpor ation 2-5 NI 781x R User Manual lines are labeled R TSI/TRIG<0..6> and R TSI/OSC. On th e NI PXI-781 x R, the R TSI trigger lines are labeled PXI/TRIG<0..7 >. In addition, the NI PXI-781 x R can use the PXI star trigger line to send or receiv e triggers from ...
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National Instruments NI 781xR - page 24
Chapter 2 Hardware Overview of the NI 781x R NI 781x R User Manual 2-6 ni.com Caution Do not driv e the same PXI local bus line with the NI PXI-781 x R and another device simultaneously . Such signal dri ving can damage both devices. NI is not liable for any damage resulting from such signal driving. The NI PXI-781 x R local bus lines are compatib ...
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National Instruments NI 781xR - page 25
Chapte r 2 Hardware Ov erview of the N I 781x R © National Instruments Corpor ation 2-7 NI 781x R User Manual Figure 2-3. Switch Location on the NI PXI-781 x R NI PXI- 7811R Reconfigurable I/O CONNECTOR 2 (DIO) CONNECTOR 3 (DIO) SW1, SW2, SW3 ...
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National Instruments NI 781xR - page 26
Chapter 2 Hardware Overview of the NI 781x R NI 781x R 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 123 ON a. Normal Operation (Default) 123 ON b. Prevent VI From Loading ...
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National Instruments NI 781xR - page 27
Chapte r 2 Hardware Ov erview of the N I 781x R © National Instruments Corpor ation 2-9 NI 781x R User Manual Complete the following steps to pr e vent a VI stored in flash memory from loading to the FPGA: 1. Power of f and unplug the PC or the PXI/CompactPCI chassis. 2. Remov e the NI 781 x R from the PCI or PXI/CompactPCI chassis. 3. Move SW1 to ...
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National Instruments NI 781xR - page 28
© National Instruments Corpor ation A-1 NI 781x R 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 .................. ................ ....... TTL D ...
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National Instruments NI 781xR - page 29
Appendix A Specifications NI 781x R 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 ............ .............. ...............11,520 NI 7813R ............ .............. .. ...
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National Instruments NI 781xR - page 30
Appendix A Specifications © National Instruments Corpor ation A-3 NI 781x R User Manual Power Requirement +5 VDC (±5%) NI 7811R ............ .............. ............... 9 mA (t yp ), 50 mA (max) 1 NI 7813R ............ .............. ............... 9 mA (t yp ), 50 mA (max) 1 +3.3 VDC (±5%) NI 7811R ............ .............. .............. ...
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National Instruments NI 781xR - page 31
Appendix A Specifications NI 781x R 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................. .........10% to 90%, noncondensing, tested i ...
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National Instruments NI 781xR - page 32
Appendix A Specifications © National Instruments Corpor ation A-5 NI 781x R User Manual Safety The NI 781 x R is designed to meet the requiremen ts of the following standards of safety for electrical e quipment for measurement, control, and laboratory use: • IEC 61010-1, EN 61010-1 • UL 61010-1, CAN/CSA-C22.2 No. 61010-1 Note Refer to the prod ...
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National Instruments NI 781xR - page 33
© National Instruments Corpor ation B-1 NI 781x R 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 w ith 40 DIO li nes per connector . Figure B-1 shows the I/O connector locations for the NI 781 x R. The I/O connecto ...
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National Instruments NI 781xR - page 34
Appendix B Connecting I/O Signals NI 781x R User Manual B-2 ni.com Figure B-1. NI 781 x R Connector Locations 1 Connector Ove rlay for the NI PXI-781 x 2 Connector Overlay for the NI PCI-781 x CONNECTOR 0 (DIO) CONNECTOR 1 (DIO) CONNECTOR 2 (DIO) CONNECTOR 3 (DIO) CONNECT OR 3 (DIO) CONNECT OR 2 (DIO) CONNECT OR 0 (DIO) CONNECT OR 1 (DIO) PCI-781xR ...
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National Instruments NI 781xR - page 35
Appendix B Connecting I/O Signals © National Instruments Corpor ation B-3 NI 781x R 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 T o access the signals on the I/O connect ors, you must connect a cable from the I/O connector to a signal ...
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National Instruments NI 781xR - page 36
Appendix B Connecting I/O Signals NI 781x R 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 outpu t signals on the NI 781 x R can damage the NI 781 x R and the computer . Maxi ...
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National Instruments NI 781xR - page 37
Appendix B Connecting I/O Signals © National Instruments Corpor ation B-5 NI 781x R 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 backpl anes for digital signal condit ioning. The NSC68-5050 cable is designed to connect the signals on th e NI 781 x R DIO c ...
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National Instruments NI 781xR - page 38
Appendix B Connecting I/O Signals NI 781x R 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 DIO18 DIO17 DIO16 DIO15 DIO14 DIO13 DIO12 DIO11 ...
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National Instruments NI 781xR - page 39
© National Instruments Corpor ation C-1 NI 781x R 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 shie lded connector block. The SCB-68 has 68 screw terminals for I/O signal connections. T o use the SCB-68 with the NI 781 x R, you must configu ...
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National Instruments NI 781xR - page 40
© National Instruments Corpor ation D-1 NI 781x R User Manual D T echnical Support and Professional Ser vices Visit the following sections of the National Instruments Web site at ni.com for technical support an d professional services: • Support —Online technical support resources at ni.com/support include the following: – Self-Help Resource ...
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National Instruments NI 781xR - page 41
Appendix D T echni cal Support and Profess ional Ser vices NI 781x R 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, contact your local off ice or NI corporat ...
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National Instruments NI 781xR - page 42
© National Instruments Corporation G-1 NI 781 x R User Manual Glossar y Symbol Pref ix V alue pp i c o 1 0 –1 2 µ micro 10 –6 m milli 10 –3 Mm e g a 1 0 6 A A Amperes. ASIC Applicat ion-Specific Integrated Circuit—A proprietary semiconductor component designed and manufactur ed to perform a set of specific functions. B bipolar A signal ra ...
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National Instruments NI 781xR - page 43
Glossary NI 781 x R User Manual G-2 © National Instruments Corporation CMRR Common-mode rejection ratio—A meas ure of an instrument’ s abilit y to reject interference from a common -mode signal, usually expressed in decibels (dB). common-mode vol t a ge Any v oltage present at the instrumenta tion amplifier inputs with respect to amplifier gro ...
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National Instruments NI 781xR - page 44
Glossary © National Instruments Corporation G-3 NI 781 x R User Manual E EEPR OM Electrically erasable programmabl e read-only memory—R OM that can be erased with an electrical signal and reprogrammed. F FPGA Field-Programmable Gate A rray . FPGA VI A configuration that is do wnloaded to the FPGA and that determines the functionality of the hard ...
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National Instruments NI 781xR - page 45
Glossary NI 781 x R User Manual G-4 © National Instruments Corporation M m Meter . max Maximum. MIMO Multiple inpu t, multiple ou tput. min Minimum. MIO Multifunction I/O. monotonicity A characteristic of a DA C in whic h the analog output always increases as the values of the digital code input to it increase. mux Multiplexer—A switching device ...
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National Instruments NI 781xR - page 46
Glossary © National Instruments Corporation G-5 NI 781 x R User Manual P PCI Peripheral Component Interconn ect—A high-performance expansion bus architecture originally de veloped b y Intel to replace ISA and EISA. It is achieving widespread acceptance as a st andard for PCs and workstations. PCI offers a theoretical maximum transfer rate of 132 ...
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National Instruments NI 781xR - 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 e xpr ess the rate at which a D A Q board samples an analog signal. signal conditioning The manipulation o f signals to prepare them for digitizing. slew rate The v oltage rate of change as a functio n of time. The maximu ...
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National Instruments NI 781xR - page 48
Glossary © National Instruments Corporation G-7 NI 781 x R User Manual V OH V olts, output high. V OL V olts, output low . V rms V olts, root mean square. W wa veform Multiple voltage readings taken at a specific sampling rate. ...
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