HP Drive manual Type dmm.Close, Type dmm.Trigger.Delay =

Page 89

Set the Trigger Delay

Set the trigger delay to 0.01 seconds.

Type: dmm.Trigger.Delay = 0.01

Display the Reading

Set the reading timeout to 1 second and display the reading.

1Return to the form view and click the Label Button in the Toolbox to create a label.

2Drag it to the form and drop it.

3Change the Name to lblResult in the Properties list at right.

4Remove the text under Caption.

5In the code after the trigger delay command, type lblResult.Caption = dmm.Measurement.Read(1000)

Close the Session

Type dmm.Close

Your final program should contain the code below.

Option Explicit

Dim dmm As New Agilent34401

Private Sub btnTest_Click()

dmm.Initialize “GPIB::23”, False, True, “Simulate=True” dmm.Function = Agilent34401FunctionDCVolts dmm.DCVoltage.Configure 1.5, 0.001 dmm.Trigger.Delay = 0.01

lblResult.Caption = dmm.Measurement.Read(1000) dmm.Close

End Sub

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Using IVI with Visual Basic 6.0 • 89

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Contents Getting Started Guide Page Contents Using IVI with LabVIEW Using IVI with Visual C# and Visual Basic .NETUsing IVI with LabWindows/CVI Using IVI with Paws Using IVI with MatlabUsing IVI with Measure Foundry Using IVI with Agilent VEE Pro Using IVI with Visual Basic 6.0Advanced Topics Purpose Why Use an Instrument Driver?Chapter Introduction Why IVI? Class IVI Driver Why Use an IVI Driver? Shared Components Download and Install IVI DriversFlavors of IVI Drivers Examples Familiarizing Yourself with the DriverIntroduction Chapter Download and Install the Driver Chapter Using IVI with Visual C++Using IVI-COM in C++ Environment\Program Files\Ivi\Bin Create a New Project and Import the Driver Type LibrariesUsing IVI with Visual C++ Set the Trigger Delay Configure the InstrumentDmm-ConfigureIviDmmFunctionDCVolts, 1.5 Dmm-Trigger-Delay =Close the Session Set the Reading Timeout/Display the ReadingError Checking Exit1 IAgilent34401Ptr dmmuuidofAgilent34401 try Using IVI-C in Visual C++Build and Run the Application $VXIPNPPATHWinNT\include \Program Files\IVI\Lib\msc\Program Files\IVI\include Chapter Error = Define Error CheckingGoto Error else error = error #endif #ifndef checkErr #define checkErrfCallIf session Hp34401aClosesession Set the Trigger and Trigger DelayCheckErr hp34401aRead session, 1000, &reading Build and Run the Application Further Information Chapter Using IVI with Visual C# Visual Basic .NET Create a New Project and Reference the Driver Create an Instance of the Driver Using Agilent.Agilent34401.InteropType dmm.Initialize GPIB23, false, true, simulate=true Dmm.Trigger.Delay = Dmm.DCVoltage.Configure1.5Type double reading Dmm.CloseAgilent34401Class dmm = new Agilent34401Class TipsOption Explicit On Imports Agilent.Agilent34401.InteropConsole.WriteLineThe reading is 0, reading Console.ReadLine Chapter Using IVI-C Chapter Using IVI with LabVIEWTMCreate a Project and Access the Driver Using IVI with LabVIEW Take the Reading Run the Application Add Error CheckingDisplay the Reading Using IVI-COM Setting a Property in an IVI-C DriverUsing IVI with LabVIEW Initialize the Instrument Configure the Instrument Close the Driver and Automation Sessions Run the Application Chapter Create a New Project and Add Instrument Driver Files Chapter Using IVI with LabWindowsTM/CVITM#include hp34401a.h Using IVI with LabWindowsTM/CVITM Configure the Instrument Set the Reading Timeout GPIB023INSTR, Vifalse Printf %f, reading Chapter Development Environment Chapter Using IVI with MatlabTopics Configure the IVI DriverUsing IVI with Matlab DMM in the Driver session field Generate an Instrument Wrapper Configure and Control the InstrumentCreate an Instance of the Instrument Connect to the InstrumentDisplay Reading Set Reading TimeoutDisconnect from the Instrument Remove the Driver from MemoryMatlab is a registered trademark of The MathWorks, Inc Chapter Chapter Using IVI with Measure Foundry Data Source Using IVI with Measure Foundry Control Source Using IVI with Measure Foundry Close Session Data SinkCompile and Run Using IVI with Measure Foundry Chapter Chapter Using IVI with Paws Prepare the Paws Environment CNX HI X20-2 LO NOM 0 V UL 0.5 V LL -0.5VDC $ Cnx hi DMM-Hi, lo DMM-LoAdd the Wcem Interface Functions Connect to the IVI-COM Driver #include DMM.h #include DMM.h Extern CComPtrIAgilent34401 driverExtern Hresult hr Hr = driver-getDCVoltage&pDMMDCVolt Variantfalse VarianttrueHr = pDMMTrig-ConfigureAgilent34401TriggerSourceImmediate Display\0333041m Bad return from Close method\033m\n Build the Project IEEE-488 Bus Configuration File ChannelPrepare the Run-Time System Environment MLALoad and Run the Project Chapter Chapter Using IVI with Visual Basic Add a Button Dim dmm As New Agilent33401 Option ExplicitType 1.5 Type dmm.Close Type dmm.Trigger.Delay =Tips Further Information Chapter Launch the Instrument Manager and Select the Driver Chapter Using IVI with Agilent VEE ProChapter Using IVI with Agilent VEE Pro Initialize the Instrument Configure the Instrument Tips Another Method to Display the Reading Further Information Chapter Driver API Chapter Advanced TopicsIVI Architecture Driver Types Advanced Topics Interchangeability Instrument I/OAdvanced Topics IVI Configuration Store Advanced Topics Chapter IIviSessionFactory factory = new IviSessionFactoryClass IVI-COMString identifier = driver.Identity.Identifier Driver.InitializelogicalName, true, trueConsole.WriteLineIdentifier 0, identifier IIviDmm dmm = IIviDmmfactory.CreateDriverlogicalNameIVI-C IVI Drivers in Action Editing the Configuration StoreFuture Development Advanced Topics Chapter

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