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National Instruments SCXI-1161 - page 1
SCXI ™ -1161 User Manual 8-Channel Power Relay Module SCXI-1161 User Manual March 1999 Edition Part Number 320514C-01 © Copyright 1993, 1999 National Instruments Corporation. All Rights Reserved. ...
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National Instruments SCXI-1161 - page 2
Worldwide Technical Support and Product Information www.natinst.com National Instruments Corporate Headquarters 11500 North Mopac Expressway Austin, Texas 78759-3504 USA Tel: 512 794 0100 Worldwide Offices Australia 03 9879 5166, Austria 0662 45 79 90 0, Belgium 02 757 00 20, Brazil 011 284 5011, Canada (Ontario) 905 785 0085, Canada (Québec) 514 ...
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National Instruments SCXI-1161 - page 3
Important Information Warranty The SCXI-1161 is warranted against de fects in materials and wor kmanship for a period of on e year from the date of shipment, as evidenced by receipts or other documentati on. National Instruments will, at its option, repair or replace equipment that pro ves to be d efective duri ng th e warrant y pe riod. This warra ...
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National Instruments SCXI-1161 - page 4
© National Instruments Corporation v SCXI-1161 User Manual Table of Contents About This Manual Organization of This Manual .............. ........... .............. ............... ........... .............. ......... ix Conventions Used in This Manual .......................... ........... .............. .............. ............ ... x National ...
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National Instruments SCXI-1161 - page 5
T able of Contents SCXI-1161 User Manual vi © National Instruments Corporation Chapter 3 Signal Connections Screw Terminal Connections ........... ............... .............. ........... .............. .............. ........ 3-1 Contact Protection for Inductive Load Connections .................................................... 3-1 Signal Co ...
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National Instruments SCXI-1161 - page 6
T able of Contents © National Instruments Corporation vii SCXI-1161 User Manual Figure 3-3. SCXI-1161 Rear Signal Connector Pin Assignment ............................. 3-5 Figure 4-1. SCXI-1161 Block Diagram ............. ........... .............. .............. ............ ... 4-2 Figure 4-2. Digital Interface Circuitry Block Diagram ......... ...
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National Instruments SCXI-1161 - page 7
© Na ti ona l I nst ru men ts Co rpo ra tio n ix SCXI-1161 User Manual About This Manual This manual describes the electrical and me chanical aspects of the SCXI-1161 and contain s information concernin g its operation and programming. Th e SCXI-1161 is a member of the National Instruments Signal Conditioning eXtensions for Instrumentation (SCXI) ...
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National Instruments SCXI-1161 - page 8
About This Manual SCXI-1161 User Manual x © National Instruments Corporation • Appendix C, Customer Communication , contains forms you can use to request help from National Instruments or to comment on our products. •T h e Glossary cont ains an alphabetical list and descript ion of terms used in this manual, in cluding abbrevi ations, acronyms ...
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National Instruments SCXI-1161 - page 9
About This Manu al © Na ti ona l I nst ru men ts Co rpo ra tio n xi SCXI-1161 User Manual monospace Lowercase text in this font denotes te xt or characters that are to be literally input fro m the keyboard, sections of code, p rogramming examples, and syntax examples. This font is also used for the proper names of disk drives, paths, directories, ...
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National Instruments SCXI-1161 - page 10
About This Manual SCXI-1161 User Manual xi i © National Instruments Corporation documentation sets and the NI-DAQ documentation. After you set u p your hardware system, use either the application software (LabVIEW or LabWindows/CVI) or the NI-DAQ documentatio n to help you write your ap plication. If you hav e a large, complicated system, it is wo ...
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National Instruments SCXI-1161 - page 11
© Na ti ona l I nst ru men ts Co rpo ra tio n 1- 1 SCXI-1161 User Manual Chapter 1 Introduction This chapter describes the SCXI-1161; lists the contents of your SCXI-1161 kit; descri bes the optional softwar e, optional equip ment, and custom cables; and expl ains how to unpack the S CXI-1161 kit. About the SCXI-1161 The SCXI-1161 consists of ei g ...
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National Instruments SCXI-1161 - page 12
Chapter 1 Introduction SCXI-1161 User Manual 1-2 © National Instruments Corporation Software Programming Choices There are several options to choose from when programming your National Instruments DAQ or SCXI hardware. Yo u can use LabVIEW, LabWindows/CVI, ComponentWorks, VirtualBench, NI-DAQ, or register-level programming. National Instruments Ap ...
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National Instruments SCXI-1161 - page 13
Chapter 1 Introduction © Na ti ona l I nst ru men ts Co rpo ra tio n 1- 3 SCXI-1161 User Manual NI-DAQ Driver Software The NI-DAQ driver software is included at no charge with all National Instruments DAQ hard ware. NI-DAQ is not packaged wit h SCXI or accessory products, except for the SCXI-1200. NI-DAQ has an extensive library of functions t hat ...
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National Instruments SCXI-1161 - page 14
Chapter 1 Introduction SCXI-1161 User Manual 1-4 © National Instruments Corporation Figure 1-1. The Relationship between the Programming Environment, NI-DAQ, and Your Hardware Register-Level Programming The final option for p rogramming any Nat ional Instruments DAQ hardware is to write register-level software. Writing register-level programming s ...
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National Instruments SCXI-1161 - page 15
Chapter 1 Introduction © Na ti ona l I nst ru men ts Co rpo ra tio n 1- 5 SCXI-1161 User Manual Optional Equipment National Instrument s offers a variety of products t o use with your SCXI-1611, including cab les and other accessories as follows: • Cables and cable assemblies • Multichassis adapter • One-slot cable extender For more specific ...
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National Instruments SCXI-1161 - page 16
Chapter 1 Introduction SCXI-1161 User Manual 1-6 © National Instruments Corporation Unpacking Your SCXI-1161 module is shipped in an antistatic package to prevent electrostatic damage to the module. Electrostatic di scharge can damage several components on the module. To avoid such damage in handling the module, take the following precauti ons: ? ...
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National Instruments SCXI-1161 - page 17
© Na ti ona l I nst ru men ts Co rpo ra tio n 2- 1 SCXI-1161 User Manual Chapter 2 Configuration and Installation This chapter describes the SCXI-1161 jumper configurations, installation of the SCXI-1161 into the SCXI chassis, signal connections to the SCXI-1161, and cable wiring. Module Configuration The SCXI-1161 includes five ju mpers, shown in ...
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National Instruments SCXI-1161 - page 18
Chapter 2 Configuration and Installation SCXI-1161 User Manual 2-2 © National Instruments Corporation Figure 2-1. SCXI-1161 General Parts Locator Diagram Thumbscrew Tightening Strain Relief Thumbscrew Arc Suppressor Product Name Assembly Number Screw W3 Serial Rear Connector Signal Connector SCXIbus Grounding Screw FRONT REAR Number Pads Screws Re ...
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National Instruments SCXI-1161 - page 19
Chapter 2 Configuration and Installation © Na ti ona l I nst ru men ts Co rpo ra tio n 2- 3 SCXI-1161 User Manual Caution: DO NOT OPERATE THE DEVICE IN AN EXP LOSIVE ATMOSPHERE OR WHERE THERE MAY BE FLAMMABL E GASES OR FUMES. KEEP AWAY FROM LIVE CIRCUITS. Do not remove equipment covers or shields unless you are trained to do so. If signal wires ar ...
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National Instruments SCXI-1161 - page 20
Chapter 2 Configuration and Installation SCXI-1161 User Manual 2-4 © National Instruments Corporation Connect the signal wires to the screw terminals by inserting the stripped end of the wire full into the terminals. Tighten the terminals to a torque of 5 to 7 in.-lb. Connections, including power signals to ground and vice versa, that exceed any o ...
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National Instruments SCXI-1161 - page 21
Chapter 2 Configuration and Installation © Na ti ona l I nst ru men ts Co rpo ra tio n 2- 5 SCXI-1161 User Manual Jumper Use Use the jumpers as follows: • Jumper W1 connects a pullup resistor to the SERDATOUT signal on the rear signal connector. • Jumper W2 carries the SCXIbus MISO line, after buffering, to the SERDATOUT signal on the rear sig ...
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National Instruments SCXI-1161 - page 22
Chapter 2 Configuration and Installation SCXI-1161 User Manual 2-6 © National Instruments Corporation Jumper W2 Position 1 connects the SCXIbus MISO line, after buffering, to the SERDATOUT pin of the rear signal connector. This is the factory-default setting. In this setting, along wi th the proper setting of jumper W1, the data acq uisition board ...
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National Instruments SCXI-1161 - page 23
Chapter 2 Configuration and Installation © Na ti ona l I nst ru men ts Co rpo ra tio n 2- 7 SCXI-1161 User Manual Table 2-1. Configuration of Jumpers W1 and W2 Jumper Description Configuration W1 Parking position W1 Factory setting–Connects pullup to SERDATOUT W2 Parking position W2 Factory setting–Connects MISO to SERDATOUT 3 2 1 3 2 1 3 2 1 ...
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National Instruments SCXI-1161 - page 24
Chapter 2 Configuration and Installation SCXI-1161 User Manual 2-8 © National Instruments Corporation Jumpers W3, W4, and W5 You can use two types of data acquisition boar ds with the SCXI-1161-DIO-type boards and MIO-type boards. All th ree jumpers have labels indicat ing the DIO and the MIO configurations. If you want to use the SCXI-1161 with a ...
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National Instruments SCXI-1161 - page 25
Chapter 2 Configuration and Installation © Na ti ona l I nst ru men ts Co rpo ra tio n 2- 9 SCXI-1161 User Manual Hardware Installation You can install the SCXI-1161 in any availa ble SCXI chassis. After you have made any necessary changes and have verified and recorded the jumper settings on the form in Appendix C, Customer Communication , you ar ...
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National Instruments SCXI-1161 - page 26
© Na ti ona l I nst ru men ts Co rpo ra tio n 3- 1 SCXI-1161 User Manual Chapter 3 Signal Connections This section descri bes the signal connections to the SCXI-1 161 board via the SCXI-1161 screw terminals and rear signal connector, and includes specifications and connection instructions for the SCXI-1161 connector signals. Screw Terminal Connect ...
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National Instruments SCXI-1161 - page 27
Chapter 3 Signal Connections SCXI-1161 User Manual 3-2 © National Instruments Corporation Figure 3-1. Contact Protection Using a Flyback Diode for DC Inductive Loads In addition, the module has pads o n which you can place an arc suppressor protection circuit t o limit the voltage spike generated during the switching of inductive loads. These pads ...
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National Instruments SCXI-1161 - page 28
Chapter 3 Signal Connections © Na ti ona l I nst ru men ts Co rpo ra tio n 3- 3 SCXI-1161 User Manual Figure 3-2 shows how to connect a transient voltage suppressor for AC and DC inductive loads. Figure 3-2. Arc Suppresso r Pad Locations Table 3-2. Arc Suppressor Placement, COM to NC COM to NC Channel Num ber Transient Voltage Suppressor Reference ...
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National Instruments SCXI-1161 - page 29
Chapter 3 Signal Connections SCXI-1161 User Manual 3-4 © National Instruments Corporation Signal Connection To connect the signal to the screw terminals, use the following procedure: 1. Remove the grou nding screw of the top co ver. 2. Snap out the top cover o f the shield by pl acing a screwdriver i n the groove at the bott om of the module. 3. I ...
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National Instruments SCXI-1161 - page 30
Chapter 3 Signal Connections © Na ti ona l I nst ru men ts Co rpo ra tio n 3- 5 SCXI-1161 User Manual Figure 3-3 shows the pin assignments for the SCXI-1161 rear signal connector. Figure 3-3. SCXI-1161 Rear Signal Connector Pin Assignment (DIO) SERDATOUT (MIO) SERCLK (DIO) SERCLK SLOT0SEL* DAQD*/A SERDATIN DIG GND (DIO) SERDATOUT (MIO) DIG GND (MI ...
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National Instruments SCXI-1161 - page 31
Chapter 3 Signal Connections SCXI-1161 User Manual 3-6 © National Instruments Corporation Rear Signal Connector Signal Descriptions Table 3-3 shows the rear signal connector signal description s. Table 3-3. Rear Signal Connector Signal Descriptions Pin Signal Name Description 24 or 50 DIG GND Digital Ground—Sup plies the reference for data acqui ...
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National Instruments SCXI-1161 - page 32
Chapter 3 Signal Connections © Na ti ona l I nst ru men ts Co rpo ra tio n 3- 7 SCXI-1161 User Manual All other pins are not connected. Digital I/O Signal Connections When you configure the SCXI- 1161 for an MIO-ty pe board, the digital I/O signals of the SCXI-116 1 match the digital I/O lines o f the MIO-type board. When you use t he SCXI-1161 wi ...
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National Instruments SCXI-1161 - page 33
Chapter 3 Signal Connections SCXI-1161 User Manual 3-8 © National Instruments Corporation Table 3-4 lists the pin equivalences. For more i nformation, consult the installation guide of your cable. Table 3-4. SCXIbus to SCXI-1161 Rear Signal Connector to Data Acquisition Board Pin Equivalences SCXIbus Line SCXI-1161 Rear Signal Connector MIO Boards ...
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National Instruments SCXI-1161 - page 34
© Na ti ona l I nst ru men ts Co rpo ra tio n 4- 1 SCXI-1161 User Manual Chapter 4 Theory of Operation This chapter contai ns a functional overview of the SCXI-1161 module and explains the o peration of each functional uni t making up the SCXI-1161. Functional Overview The block diagram in Figure 4-1 shows the key functional components of the SCXI ...
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National Instruments SCXI-1161 - page 35
Chapter 4 Theory of Operat ion SCXI-1161 User Manual 4-2 © National Instruments Corporation Figure 4-1. SCXI-1161 Block Diagram NC(6) COM(6) NO(6) NC(1) COM(1) NO(1) NC(0) COM(0) NO(0) NC(7) COM(7) NO(7) Arc Suppressor Pads Relays 0 through 7 Data Register Module ID Register Digital Interface SCXIbus Connector Rear Signal Connector ...
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National Instruments SCXI-1161 - page 36
Chapter 4 Theory of Operation © Na ti ona l I nst ru men ts Co rpo ra tio n 4- 3 SCXI-1161 User Manual The major components of the SCXI-1161 are as follows: • The digital interface • The digital control circui try • The relay channels The SCXI-1161 module is dedicated t o switching and control ling power signal sources. The theory of operati ...
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National Instruments SCXI-1161 - page 37
Chapter 4 Theory of Operat ion SCXI-1161 User Manual 4-4 © National Instruments Corporation signals from the data acqu isition board and t he SCXIbus and sends signals back and forth between the data acquisition board and the SCXIbus. Digital Control Circuitry Figure 4-3 diagrams the SCXI-1161 digital control. Figure 4-3. SCXI-1161 Digital Control ...
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National Instruments SCXI-1161 - page 38
Chapter 4 Theory of Operation © Na ti ona l I nst ru men ts Co rpo ra tio n 4- 5 SCXI-1161 User Manual Relay Channels The SCXI-1161 has eight indepen dent one form C (single-pol e double-throw) relays. Each relay has three connections at the front screw terminals–the common (COM), the normally closed (NC), and the normally open (NO) positions. E ...
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National Instruments SCXI-1161 - page 39
© National Instruments Corporation A-1 SCXI-1161 User Manual Appendix A Specifications This appendix lists t he specifications for the SCXI- 1161. These are typical at 25° C and 50% humidity unless otherwise stated. The operating temperature range is 0° to 50° C. Channel Rating Maximum switching capacity (resistive load) 1 AC .................. ...
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National Instruments SCXI-1161 - page 40
Appendix A Specifications SCXI-1161 User Manual A-2 © National Instruments Corporation Operate time ....................................... 15 msec Release time ....................................... 15 msec Physical Dimensions ........................................ 1.2 by 6.8 by 8.0 in. Connectors ......................................... 50-p ...
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National Instruments SCXI-1161 - page 41
© National Instruments Corporation B-1 SCXI-1161 User Manual Appendix B Contact Protection This appendix contains technical data on contact p rotection whe n you are switching inductive loads. 1 1 Copyright © Aromat Corporation, 1991. Reprinted with permission of copyright owner. All rights reserved. Aromat Corporation. 1991 Relay Technical D ata ...
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National Instruments SCXI-1161 - page 42
Appendix B Contact Protection SCXI-1161 User Manual B-2 © National Instruments Corporation ...
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National Instruments SCXI-1161 - page 43
Appendix B Contact Protection © National Instruments Corporation B-3 SCXI-1161 User Manual ...
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National Instruments SCXI-1161 - page 44
Appendix B Contact Protection SCXI-1161 User Manual B-4 © National Instruments Corporation ...
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National Instruments SCXI-1161 - page 45
Appendix B Contact Protection © National Instruments Corporation B-5 SCXI-1161 User Manual ...
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National Instruments SCXI-1161 - page 46
Appendix B Contact Protection SCXI-1161 User Manual B-6 © National Instruments Corporation ...
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National Instruments SCXI-1161 - page 47
© National Instruments Corporation C-1 SCXI-1161 User Manual Appendix C Customer Communication This appendix describes the comprehensiv e resources av ailable to you in the T echnical Support section of the National Instruments W eb site and provides technical support telephone numbers for you to use if you have trouble connecting to our W eb site ...
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National Instruments SCXI-1161 - page 48
Software-Related Resources • Instrument Driver Network —A library with hundreds of instrument dri v ers for control of standalone instruments via GPIB, VXI, or serial interfaces. Y ou also can submit a request for a particular instrument dri ver if it does not already appear in the library . • Example Programs Database —A database with nume ...
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National Instruments SCXI-1161 - page 49
Technical Support Form Photocopy this form and update it each time you make changes to your software or hardw are, and use the completed copy of this form as a reference for your current configuration. Completing this form accurately before contacting National Instruments for technical support helps our applications engineers answer your questions ...
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National Instruments SCXI-1161 - page 50
SCXI-1161 Hardware and Software Configuration Form Record the settings and revisions of your hardware and software on the line to the right of each item. Complete a new copy of this form each time you revise your software or hardware configuration, and use this form as a reference for your current configuration. Completing this form accurately befo ...
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National Instruments SCXI-1161 - page 51
Documentation Comment Form National Instruments encourages you to comment on the documentation supplied with our pro ducts. This information helps us provide quality products to meet your needs. Title: SCXI ™ -1161 User Manual Edition Date: March 1999 Part Number: 320514C-01 Please comment on the completeness, clarity, and organization of the man ...
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National Instruments SCXI-1161 - page 52
© National Instruments Corporation G-1 SCXI-1161 User Manual Glossary Numbers/Symbols ° degrees Ω ohms +5 V (signal) +5 VDC Source A A amperes AC alternating current A/D analog-to-digital AWG America n Wire Gauge Prefix Meaning Value p- pico- 10 –12 n- nano- 10 –9 µ- micro- 10 –6 m- milli - 10 –3 k- kilo- 10 3 M- mega- 10 6 ...
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National Instruments SCXI-1161 - page 53
Glossary SCXI-1161 User Manual G -2 © National Instruments Corporation C CC e l s i u s CHS Chassis CHSGND Chassis Ground COM common cpm cycles per minute D D/A digital-to-analog D*/A Data/Address DAQD*/A Data Acquisitio n Board Data/Address Line DC direct current DIG GND Digital Ground DIO digital I/O F FIFO first-in-first-out ft feet H hex hexad ...
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National Instruments SCXI-1161 - page 54
Glossary © National Instruments Corporation G-3 SCXI-1161 User Manual I I/O input/output I I input current leakage I in input current in. inches INTR* Interrupt I out output current L LSB least significant bit M M megabytes of memory m meters MIO multifunction I/O MISO Master-In-Slave-Out MOSI Master-Out-Slave-In MOV metal oxide varistor MSB most ...
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National Instruments SCXI-1161 - page 55
Glossary SCXI-1161 User Manual G -4 © National Instruments Corporation R RAM random-access memory RESET* reset RMA Return Material Authorization rms root mean square RTSI Real-Time System Integration S SCXI Si gnal Conditioning eXt ensions for Instrumentati on (bus) SDK Software Developer’s Kit sec seconds SERCLK Serial Clock SERDATIN Serial Dat ...
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National Instruments SCXI-1161 - page 56
Glossary © National Instruments Corporation G-5 SCXI-1161 User Manual V Vv o l t s V+ Positive Analog Su pply V– Negative Analog Supply VAC volts alternating current VDC volts direct current V IH volts input high V IL volts input low V in volts in V OH volts out put high V OL volts out put low V out volts out V rms volts, root mean square W Ww a ...
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National Instruments SCXI-1161 - page 57
© Na ti on al I ns tr ume nt s Cor por at io n I- 1 SCXI-1161 U ser Manual Index A arc suppressor pad locations (figure), 3-3 arc suppressor placement COM to NC (table), 3-3 COM to NO (table), 3-2 B bulletin board support, C-1 C cables, custom, 1-5 channel rating specifications, A-1 to A-2 ComponentWorks software, 1-2 configuration, 2-1 to 2-8 jum ...
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National Instruments SCXI-1161 - page 58
Index SCXI-1161 User Manual I- 2 © National Instruments Corporation flyback voltage. See contact protection for inductive load connections. FTP support, C-1 H hardware installation, 2-9 I inductive load connections, contact protection for. See contact protection for inductive load connections. installation hardware, 2-9 unpacking the SCXI-1161, 1- ...
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National Instruments SCXI-1161 - page 59
Index © Na ti on al I ns tr ume nt s Cor por at io n I- 3 SCXI-1161 U ser Manual S safety cautions, 2-3 to 2-4 screw terminal connections, 3-1 SCXI-1161 block diagram, 4-2 custom cables, 1-5 optional equipment, 1-5 overview, 1-1 parts locator diagram, 2-2 requirements for getting started, 1-1 software programming choices, 1-2 to 1-4 National Instr ...
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National Instruments SCXI-1161 - page 60
Index SCXI-1161 User Manual I- 4 © National Instruments Corporation functional overview, 4-1 to 4-3 relay channels, 4-5 SCXI-1161 block diagram, 4-2 V VirtualBench software, 1-2 ...
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