E r a t i o n T h e o r e m, A/D Conversion | HP 9112 instruction

4

O p e r a t i o n T h e o r e m

The operation theorem of the functions on PCI-9112 card is described in this chapter. The functions include the A/D conversion, D/A conversion, Digital I/O and counter / timer. The operation theorem can help you to understand how to manipulate or to program the PCI-9112.

4.1A/D Conversion

Before programming the PCI-9112 to perform the A/D conversion, you should understand the following issues:

ØA/D front-end signal input connection

ØA/D conversion procedure

ØA/D trigger mode

ØA/D data transfer mode

ØSignal Connection

4.2Analog Input Signal Connection

The PCI-9112 provides 16 single-ended or 8 differential analog input channels. The analog signal can be converted to digital value by the A/D converter. To avoid ground loops and get more accuracy measurement of A/D conversion, it is quite important to understand the signal source type and how to choose the analog input modes : signal -ended and differential. The PCI-9112 offers jumpers to select 16 single-ended or 8 different analog inputs.

28 ∙ Operation Theorem

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HP 9112 manual E r a t i o n T h e o r e m, A/D Conversion, Analog Input Signal Connection, 28 ∙ Operation Theorem

Contents

Page ALL Rights Reserved Trademarks Adlink Technology Inc Detailed Company InformationQuestions Page Contents Conversion Conversion Digital Input and Output9112DO 9112DA 9112ADSetChannel 9112ADSetRange 9112DblBufferTransfer 9112GetOverrunStatus Appendix A. Demo. Programs Product Warranty/Service What do you need VR Assignment AdjustmentSoftware Utilities PCI Scan Utility How to Use This Guide Features T r o d u c t i o nIntroduction ∙ Specifications ApplicationsAnalog Input A/D Analog Output D/A General Specifications Digital I/O DIOProgrammable Counter Software Supporting Programming LibraryPCIS-LVIEW LabVIEW Driver PCIS-VEE HP-VEE Driver DAQBenchTM ActiveX ControlsDASYLabTM PRO PCIS-DDE DDE Server and InTouchTM Installation ∙ InstallationWhat You Have Device Installation for Windows Systems Installation ∙Unpacking PCB Layout PCI-9112 LayoutConverter PCI -Bus Controller CPCI-9112 Layout PCB Layout of the PCI-9112 Jumper Settings Analog Input Channel Configuration10 ∙ Installation Clock Source Setting D/A Reference Voltage Setting Internal Reference Voltage Setting 12 ∙ Installation Connectors Pin Assignments CN 3 Analog Input / Output & Counter/TimerPin Assignments of PCI-9112 CN 1 Digital Signal Input DI 0 CN 2 Digital Signal Output do 014 ∙ Installation Pin Assignments of cPCI-9112 Hardware Installation Outline 16 ∙ Installation Daughter Board Connection Connect with ACLD-8125Connect with ACLD-9137 Connect with ACLD-9182 18 ∙ Installation Connect with ACLD-9185Connect with ACLD-9138 and ACLD-9188 G i s t e r s F o r m a t I/O Registers MapRegisters Format ∙ A/D Data Registers 20 ∙ Registers Format D/A Output Register A/D control Register Mode22 ∙ Registers Format Auto-Scan Bit MUX Register Bit8 ~ Bit5 24 ∙ Registers Format A/D Status Register Software Trigger Register Digital I/O register 26 ∙ Registers Format Internal Timer/Counter Register High Level ProgrammingLow Level Programming Analog Input Signal Connection E r a t i o n T h e o r e mA/D Conversion 28 ∙ Operation Theorem Single-ended Mode Differential input modeOperation Theorem ∙ 4 Floating source and differential input 30 ∙ Operation Theorem 1 A/D Conversion Procedure Timer Pacer Trigger2 A/D Trigger Modes Software trigger 3 A/D Data Transfer Modes External TriggerSoftware Data Transfer Drdy Interrupt Transfer Intx D/A Conversion DMA Transfer Dmax Digital Input and Output 34 ∙ Operation Theorem Timer/Counter Operation Counter General Purpose Timer/ Counter Pacer Trigger SourceAddress 36 ∙ Operation Theorem Control Byte Mode Definitions 38 ∙ Operation Theorem Libraries Installation + + L i b r a r y++ Library ∙ Programming Guide Naming ConventionData Types 40 ∙ C/C++ Library 9112Initial SyntaxArgument Return Code 9112DI 9112DI ChannelDescription 42 ∙ C/C++ Library 9112DO 9112DA 44 ∙ C/C++ Library 9112ADSetChannel 9112ADSetRange 46 ∙ C/C++ Library 10 9112ADSetMode Cardnumber the card number of PCI-9112 11 9112ADSetAutoscan 48 ∙ C/C++ Library 12 9112ADSoftTrig 13 9112ADAquire 50 ∙ C/C++ Library 14 9112ADDMAStart 52 ∙ C/C++ Library 15 9112ADDMAStatus 16 9112ADDMAStop 54 ∙ C/C++ Library 17 9112ContDmaStart 18 9112CheckHalfReady 56 ∙ C/C++ Library 19 9112DblBufferTransfer 20 9112GetOverrunStatus 21 9112ContDmaStop 58 ∙ C/C++ Library 22 9112ADINTStart 23 9112ADINTStatus 60 ∙ C/C++ Library 25 9112ADTimer 24 9112ADINTStop 2MHz / c1 * c2 62 ∙ C/C++ Library 26 9112TIMERStart 27 9112TIMERRead 28 9112TIMERStop 29 9112AllocDMAMemArgument cardnumber countervalue 64 ∙ C/C++ Library 30 9112FreeDMAMem 32 9112GetSample 66 ∙ C/C++ Library Calibration What do you needCalibration ∙ A/D Adjustment VR AssignmentBipolar Calibration Unipolar Calibration D/A Adjustment Reference Voltage Calibration2 D/A Channel Calibration Software Utilities Software Utility70 ∙ Software Utility System Configuration Running the UtilityCalibration Software Utility ∙ Functional Testing PCI Scan Utility72 ∙ Software Utility P e n d i x a . D e m o O g r a m s DOS SoftwareWindows 95 DLL Appendix a Demo Programs ∙ 74 ∙ Appendix a Demo Programs Product Warranty/Service Product Warranty/Service ∙