National-instruments SCXI-1120 User Manual

© Copyright 1992, 1994 National Instruments Corporation.All Rights Reserved.SCXI-1120User ManualEight-Channel Isolated Analog Input Module for Signal

© National Instruments Corporation xi SCXI-1120 User ManualAbout This Manual

SCXI-1120 Cabling Appendix ESCXI-1120 User Manual E-2 © National Instruments CorporationTable E-1 lists the pin equivalences of the MIO-16 board and t

Appendix E SCXI-1120 Cabling© National Instruments Corporation E-3 SCXI-1120 User Manual5. Connect the loose end of the cable assembly to the MIO-16 b

SCXI-1120 Cabling Appendix ESCXI-1120 User Manual E-4 © National Instruments CorporationLab boards full access to the digital control lines and analog

Appendix E SCXI-1120 Cabling© National Instruments Corporation E-5 SCXI-1120 User Manual6. For an SCXI-1341, connect the loose end of the ribbon cable

SCXI-1120 Cabling Appendix ESCXI-1120 User Manual E-6 © National Instruments CorporationTable E-3. SCXI-1342 Pin Translations (Continued)PC-LPM-16 Pi

Appendix E SCXI-1120 Cabling© National Instruments Corporation E-7 SCXI-1120 User Manual1. Make sure that the computer and the SCXI chassis are turned

SCXI-1120 Cabling Appendix ESCXI-1120 User Manual E-8 © National Instruments CorporationFront Panel ConnectorFront PanelFront Threaded StripRibbon Cab

Appendix E SCXI-1120 Cabling© National Instruments Corporation E-9 SCXI-1120 User Manual50-Pin ConnectorGrounding ScrewThumbscrew CutoutStep 1Step 2In

SCXI-1120 Cabling Appendix ESCXI-1120 User Manual E-10 © National Instruments CorporationSCXI-1351 InstallationFollow these steps to install the SCXI-

Appendix E SCXI-1120 Cabling© National Instruments Corporation E-11 SCXI-1120 User Manual5. Connect another ribbon cable or cable assembly to the chas

About This ManualSCXI-1120 User Manual xii © National Instruments Corporation• Appendix D, SCXI-1120 Front Connector, describes the pinout and signal

SCXI-1120 Cabling Appendix ESCXI-1120 User Manual E-12 © National Instruments CorporationTable E-4. SCXI-1343 Pin ConnectionsRear Signal Connector Pi

© National Instruments Corporation F-1 SCXI-1120 User ManualAppendix FRevision A and B Photo and Parts LocatorDiagrams

Revision A and B Photo and Parts Locator Diagrams Appendix FSCXI-1120 User Manual F-2 © National Instruments CorporationFigure F-2. Revision A and B

Appendix F Revision A and B Photo and Parts Locator Diagrams© National Instruments Corporation F-3 SCXI-1120 User ManualFigure F-3. Revision A and B

© National Instruments Corporation G-1 SCXI-1120 User ManualAppendix GCustomer Communication

Technical Support Form___________________________________________________ Photocopy this form and update it each time you make changes to your softwar

SCXI-1120 Hardware Configuration Form

Documentation Comment Form

© National Instruments Corporation Glossary-1 SCXI-1120 User ManualGlossary

GlossarySCXI-1120 User Manual Glossary-2 © National Instruments CorporationDD*/A Data/Address signalD/A digital-to-analogDAQD*/A Data Acquisition Boar

About This Manual© National Instruments Corporation xiii SCXI-1120 User ManualSCXIbus descriptor may be omitted when the meaning is clear.Descriptions

Glossary© National Instruments Corporation Glossary-3 SCXI-1120 User ManualMm metersM megabytes of memoryMCH#+ Positive Analog Output Channel Number s

GlossarySCXI-1120 User Manual Glossary-4 © National Instruments Corporationsec secondsSERCLK Serial Clock signalSERDATIN Serial Data In signalSERDATOU

SCXI-1120 User Manual Index-1 © National Instruments CorporationIndex

Index© National Instruments Corporation Index-2 SCXI-1120 User ManualSCXI-1120 and MIO-16 boardpinout equivalences, E-2SCXI-1341cable assembly, E-3 to

IndexSCXI-1120 User Manual Index-3 © National Instruments Corporationregister selection and writeprocedure, 5-2DIG GND signal, 2-25, B-2digital contro

Index© National Instruments Corporation Index-4 SCXI-1120 User ManualSCXI-1328 terminal block, 2-23SCXI-1340, E-2 to E-3SCXI-1341, E-4 to E-5SCXI-1342

IndexSCXI-1120 User Manual Index-5 © National Instruments CorporationNNI-DAQ software, 1-2 to 1-3nulling the offset, 3-11OONCE bit, 4-7operating envir

Index© National Instruments Corporation Index-6 SCXI-1120 User Manualreference-mode selection (jumper W46),2-7registersprogramming considerations, 5-1

IndexSCXI-1120 User Manual Index-7 © National Instruments CorporationConfiguration Register, 2-30 to 2-31,3-7, 4-3 to 4-4Module ID Register, 2-31, 3-8

Index© National Instruments Corporation Index-8 SCXI-1120 User Manualtemperature sensor connection, 2-15rear signal connectoranalog output signalconne

© National Instruments Corporation 1-1 SCXI-1120 User ManualChapter 1Introduction

IndexSCXI-1120 User Manual Index-9 © National Instruments Corporationanalog and timing circuitry, 3-8 to 3-13analog input block diagram, 3-9analog inp

Introduction Chapter 1SCXI-1120 User Manual 1-2 © National Instruments CorporationWhat Your Kit Should ContainThe contents of the SCXI-1120 kit (part

Chapter 1 Introduction© National Instruments Corporation 1-3 SCXI-1120 User ManualYou can also use the SCXI-1120, combined with the NB Series data acq

Introduction Chapter 1SCXI-1120 User Manual 1-4 © National Instruments CorporationCustom CablesThe SCXI-1120 rear signal connector is a 50-pin male ri

© National Instruments Corporation 2-1 SCXI-1120 User ManualChapter 2Configuration and Installation

Configuration and Installation Chapter 2SCXI-1120 User Manual 2-2 © National Instruments CorporationFigure 2-1. SCXI-1120 General Parts Locator Diagr

Chapter 2 Configuration and Installation© National Instruments Corporation 2-3 SCXI-1120 User ManualFigure 2-2 shows a detailed parts locator diagram

National Instruments Corporate Headquarters6504 Bridge Point ParkwayAustin, TX 78730-5039(512) 794-0100Technical support fax: (800) 328-2203(512) 794-

Configuration and Installation Chapter 2SCXI-1120 User Manual 2-4 © National Instruments CorporationThe jumpers are used as follows:• Fixed jumpers- O

Chapter 2 Configuration and Installation© National Instruments Corporation 2-5 SCXI-1120 User ManualJumper W44On Revision A and B modules, position 1

Configuration and Installation Chapter 2SCXI-1120 User Manual 2-6 © National Instruments Corporationacquisition board, those different modules will ha

Chapter 2 Configuration and Installation© National Instruments Corporation 2-7 SCXI-1120 User ManualTable 2-1. Digital Signal Connections, Jumper Set

Configuration and Installation Chapter 2SCXI-1120 User Manual 2-8 © National Instruments CorporationTable 2-2. Jumper W46 SettingsJumper Description

Chapter 2 Configuration and Installation© National Instruments Corporation 2-9 SCXI-1120 User ManualTable 2-3. Jumper W41 SettingsJumper Description

Configuration and Installation Chapter 2SCXI-1120 User Manual 2-10 © National Instruments CorporationTable 2-5. Gain Jumper PositionsGain Setting Jum

Chapter 2 Configuration and Installation© National Instruments Corporation 2-11 SCXI-1120 User ManualHardware InstallationYou can install the SCXI-112

Configuration and Installation Chapter 2SCXI-1120 User Manual 2-12 © National Instruments CorporationFront ConnectorFigure 2-3 shows the pin assignmen

Chapter 2 Configuration and Installation© National Instruments Corporation 2-13 SCXI-1120 User ManualFront Connector Signal DescriptionsPin Signal Nam

Limited WarrantyThe SCXI-1120 is warranted against defects in materials and workmanship for a period of one year from the date ofshipment, as evidence

Configuration and Installation Chapter 2SCXI-1120 User Manual 2-14 © National Instruments CorporationIVsVcmHigh CMVVout+-+-+-+ModuleFigure 2-4. Groun

Chapter 2 Configuration and Installation© National Instruments Corporation 2-15 SCXI-1120 User ManualIVsVout+-+-RbiasVcmHigh CMV+-+ModuleFigure 2-7.

Configuration and Installation Chapter 2SCXI-1120 User Manual 2-16 © National Instruments CorporationConnector-and-Shell AssemblyTwo types of signal c

Chapter 2 Configuration and Installation© National Instruments Corporation 2-17 SCXI-1120 User ManualMounting ScrewLock WashersNutJack ScrewsGrounding

Configuration and Installation Chapter 2SCXI-1120 User Manual 2-18 © National Instruments CorporationThe following warnings contain important safety i

Chapter 2 Configuration and Installation© National Instruments Corporation 2-19 SCXI-1120 User ManualTo determine the temperature, use the following f

Configuration and Installation Chapter 2SCXI-1120 User Manual 2-20 © National Instruments CorporationTable 2-8. Jumper Settings on the SCXI-1328 Term

Chapter 2 Configuration and Installation© National Instruments Corporation 2-21 SCXI-1120 User ManualFigure 2-9. SCXI-1320 Parts Locator Diagram

Configuration and Installation Chapter 2SCXI-1120 User Manual 2-22 © National Instruments CorporationFigure 2-10. SCXI-1328 Parts Locator Diagram

Chapter 2 Configuration and Installation© National Instruments Corporation 2-23 SCXI-1120 User ManualTerminal Block InstallationTo connect the termina

© National Instruments Corporation v SCXI-1120 User ManualContents

Configuration and Installation Chapter 2SCXI-1120 User Manual 2-24 © National Instruments Corporation1 23 45 67 89 1011 1213 14

Chapter 2 Configuration and Installation© National Instruments Corporation 2-25 SCXI-1120 User ManualRear Signal Connector Signal DescriptionsPin Sign

Configuration and Installation Chapter 2SCXI-1120 User Manual 2-26 © National Instruments CorporationThe signals on the rear signal connector can be c

Chapter 2 Configuration and Installation© National Instruments Corporation 2-27 SCXI-1120 User ManualThe digital output signal is pin 26:• Pin 26 is S

Configuration and Installation Chapter 2SCXI-1120 User Manual 2-28 © National Instruments CorporationTiming Requirements and Communication ProtocolTim

Chapter 2 Configuration and Installation© National Instruments Corporation 2-29 SCXI-1120 User Manual0100 110 11Chassis ID = 9 Slot 11SERDATINSS*XChas

Configuration and Installation Chapter 2SCXI-1120 User Manual 2-30 © National Instruments CorporationTlowThighSERCLKSERDATINSERDATOUTTsetupTholdTdelay

Chapter 2 Configuration and Installation© National Instruments Corporation 2-31 SCXI-1120 User ManualSLOT0SEL*SERDATINSERCLKSS*01 00001100001111Figure

© National Instruments Corporation 3-1 SCXI-1120 User ManualChapter 3Theory of Operation

Theory of Operation Chapter 3SCXI-1120 User Manual 3-2 © National Instruments CorporationThe major components of the SCXI-1120 are as follows:• SCXIbu

ContentsSCXI-1120 User Manual vi © National Instruments CorporationDigital I/O Signal Connections ...

Chapter 3 Theory of Operation© National Instruments Corporation 3-3 SCXI-1120 User ManualGUARDGUARDGUARDAB0-GUARDGUARDGUARDGUARDGUARDGUARDCHSGNDCHSGND

Theory of Operation Chapter 3SCXI-1120 User Manual 3-4 © National Instruments CorporationSCXIbus Connector Signal DescriptionsPin Signal Name Descript

Chapter 3 Theory of Operation© National Instruments Corporation 3-5 SCXI-1120 User ManualPin Signal Name Description (continued)A24 TRIG0 TRIG0 – Gene

Theory of Operation Chapter 3SCXI-1120 User Manual 3-6 © National Instruments CorporationDigital InterfaceFigure 3-3 shows a diagram of the SCXI-1120

Chapter 3 Theory of Operation© National Instruments Corporation 3-7 SCXI-1120 User ManualDigital Control CircuitryFigure 3-4 diagrams the SCXI-1120 di

Theory of Operation Chapter 3SCXI-1120 User Manual 3-8 © National Instruments CorporationThe Module ID Register connects to MISO on the SCXIbus. The

Chapter 3 Theory of Operation© National Instruments Corporation 3-9 SCXI-1120 User Manual+-+-+-+-+-+-+-+-MTEMPDTEMPInput Channel 0LPFI+LPF+-To Output

Theory of Operation Chapter 3SCXI-1120 User Manual 3-10 © National Instruments CorporationThe analog input consists of eight isolated single-ended non

Chapter 3 Theory of Operation© National Instruments Corporation 3-11 SCXI-1120 User ManualA multiranging 3 1/2-digit digital multimeter can provide yo

Theory of Operation Chapter 3SCXI-1120 User Manual 3-12 © National Instruments CorporationTable 3-2. Calibration Potentiometers Reference Designators

Contents© National Instruments Corporation vii SCXI-1120 User ManualSingle-Channel Measurements ...

Chapter 3 Theory of Operation© National Instruments Corporation 3-13 SCXI-1120 User ManualThe SCXI-1120 output circuitry consists of a buffered-output

Theory of Operation Chapter 3SCXI-1120 User Manual 3-14 © National Instruments Corporationdata acquisition board user manual, or your SCXI chassis use

Chapter 3 Theory of Operation© National Instruments Corporation 3-15 SCXI-1120 User Manualexcept during changes from one Slot 0 scan list entry to the

Theory of Operation Chapter 3SCXI-1120 User Manual 3-16 © National Instruments Corporationonto TRIG0 for the other modules and Slot 0, as shown in Fig

© National Instruments Corporation 4-1 SCXI-1120 User ManualChapter 4Register Descriptions

Register Descriptions Chapter 4SCXI-1120 User Manual 4-2 © National Instruments CorporationModule ID RegisterThe Module ID Register contains the 4-byt

Chapter 4 Register Descriptions© National Instruments Corporation 4-3 SCXI-1120 User ManualConfiguration RegisterThe Configuration Register contains 1

Register Descriptions Chapter 4SCXI-1120 User Manual 4-4 © National Instruments CorporationBit Name Description (continued)5 RTEMP Read Temperature –

Chapter 4 Register Descriptions© National Instruments Corporation 4-5 SCXI-1120 User ManualSlot 0 Register DescriptionsSlot 0 has three registers. Th

Register Descriptions Chapter 4SCXI-1120 User Manual 4-6 © National Instruments CorporationSlot-Select RegisterThe Slot-Select Register contains 16 bi

ContentsSCXI-1120 User Manual viii © National Instruments CorporationAppendix ESCXI-1120 Cabling...

Chapter 4 Register Descriptions© National Instruments Corporation 4-7 SCXI-1120 User ManualHardscan Control Register (HSCR)The HSCR contains eight bit

Register Descriptions Chapter 4SCXI-1120 User Manual 4-8 © National Instruments CorporationFIFO RegisterThe FIFO Register is used to add entries to th

© National Instruments Corporation 5-1 SCXI-1120 User ManualChapter 5Programming

Programming Chapter 5SCXI-1120 User Manual 5-2 © National Instruments CorporationTable 5-1. SCXI-1120 Rear Signal Connector Pin EquivalencesSCXIbus L

Chapter 5 Programming© National Instruments Corporation 5-3 SCXI-1120 User Manual7. Pull SLOT0SEL* low to deassert the SS* line, latch the data into t

Programming Chapter 5SCXI-1120 User Manual 5-4 © National Instruments CorporationMultiplexed OutputTo perform a direct multiplexed output measurement,

Chapter 5 Programming© National Instruments Corporation 5-5 SCXI-1120 User ManualTo measure one of the eight differential input channels to the SCXI-1

Programming Chapter 5SCXI-1120 User Manual 5-6 © National Instruments Corporation1. Data Acquisition Board Setup ProgrammingThe programming steps for

Chapter 5 Programming© National Instruments Corporation 5-7 SCXI-1120 User Manual• MC-MIO-16 User Manual- Multiple A/D Conversions with Continuous Cha

Programming Chapter 5SCXI-1120 User Manual 5-8 © National Instruments CorporationCounter 1 and SCANDIVAll MIO boards can operate their data acquisitio

Contents© National Instruments Corporation ix SCXI-1120 User ManualFiguresFigure 2-1. SCXI-1120 General Parts Locator Diagram ...

Chapter 5 Programming© National Instruments Corporation 5-9 SCXI-1120 User ManualSingle-Module Multiplexed Scanning (Direct)To perform simple channel

Programming Chapter 5SCXI-1120 User Manual 5-10 © National Instruments Corporationalso be able to send a SCANCLK*-compatible signal on TRIG0. See Cha

Chapter 5 Programming© National Instruments Corporation 5-11 SCXI-1120 User ManualTo program the hardscan circuitry, perform the following steps:1. Wr

Programming Chapter 5SCXI-1120 User Manual 5-12 © National Instruments Corporation4. Acquisition Enable, Triggering, and ServicingAt this point, you

Chapter 5 Programming© National Instruments Corporation 5-13 SCXI-1120 User Manual3. Follow the steps outlined in the section earlier in this chapter,

Programming Chapter 5SCXI-1120 User Manual 5-14 © National Instruments Corporation7. Follow the procedure given in the 4. Acquisition Enable, Triggeri

Chapter 5 Programming© National Instruments Corporation 5-15 SCXI-1120 User Manual13. Toggle SLOT0SEL*.14. Write XXXXX001 00000010 over MOSI.15. Toggl

© National Instruments Corporation A-1 SCXI-1120 User ManualAppendix ASpecifications

Specifications Appendix ASCXI-1120 User Manual A-2 © National Instruments CorporationRise time4 Hz 0.12 sec10 kHz 70 µsecSlew rate 0.15 V/µsecNoise (4

Appendix A Specifications© National Instruments Corporation A-3 SCXI-1120 User ManualNote: You can find the temperature T (°C) as follows:T (°C) = TK

ContentsSCXI-1120 User Manual x © National Instruments CorporationTablesTable 2-1. Digital Signal Connections, Jumper Settings...

© National Instruments Corporation B-1 SCXI-1120 User ManualAppendix BRear Signal Connector

Rear Signal Connector Appendix BSCXI-1120 User Manual B-2 © National Instruments CorporationRear Signal Connector Signal DescriptionsPin Signal Name D

Appendix B Rear Signal Connector© National Instruments Corporation B-3 SCXI-1120 User ManualSee the Timing Requirements and Communication Protocol sec

© National Instruments Corporation C-1 SCXI-1120 User ManualAppendix CSCXIbus Connector

SCXIbus Connector Appendix CSCXI-1120 User Manual C-2 © National Instruments CorporationGUARDGUARDGUARDAB0-GUARDGUARDGUARDGUARDGUARDGUARDCHSGNDCHSGNDC

Appendix C SCXIbus Connector© National Instruments Corporation C-3 SCXI-1120 User ManualSCXIbus Connector Signal DescriptionsPin Signal Name Descripti

SCXIbus Connector Appendix CSCXI-1120 User Manual C-4 © National Instruments CorporationPin Signal Name Description (continued)A24 TRIG0 TRIG0 – Gener

© National Instruments Corporation D-1 SCXI-1120 User ManualAppendix DSCXI-1120 Front Connector

SCXI-1120 Front Connector Appendix DSCXI-1120 User Manual D-2 © National Instruments CorporationFront Connector Signal DescriptionsPin Signal Name Des

© National Instruments Corporation E-1 SCXI-1120 User ManualAppendix ESCXI-1120 Cabling