Agilent Technologies InfiniiVision 5000 Series Manual de servicio descargar pdf (Pagina 188)

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188 Agilent InfiniiVision 5000 Series Oscilloscopes Programmer's Guide

5 Commands by Subsystem

Option Explicit

Public myMgr As VisaComLib.ResourceManager

Public myScope As VisaComLib.FormattedIO488

Public varQueryResult As Variant

Public strQueryResult As String

Private Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Long)

Sub Main()

On Error GoTo VisaComError

' Create the VISA COM I/O resource.

Set myMgr = New VisaComLib.ResourceManager

Set myScope = New VisaComLib.FormattedIO488

Set myScope.IO = myMgr.Open("TCPIP0::130.29.70.228::inst0::INSTR")

myScope.IO.Clear ' Clear the interface.

' Turn on segmented memory acquisition mode.

myScope.WriteString ":ACQuire:MODE SEGMented"

myScope.WriteString ":ACQuire:MODE?"

strQueryResult = myScope.ReadString

Debug.Print "Acquisition mode: " + strQueryResult

' Set the number of segments to 50.

myScope.WriteString ":ACQuire:SEGMented:COUNt 50"

myScope.WriteString ":ACQuire:SEGMented:COUNt?"

strQueryResult = myScope.ReadString

Debug.Print "Acquisition memory segments: " + strQueryResult

' If data will be acquired within the IO timeout:

'myScope.IO.Timeout = 10000

'myScope.WriteString ":DIGitize"

'Debug.Print ":DIGitize blocks until all segments acquired."

'myScope.WriteString ":WAVeform:SEGMented:COUNt?"

'varQueryResult = myScope.ReadNumber

' Or, to poll until the desired number of segments acquired:

myScope.WriteString ":SINGle"

Debug.Print ":SINGle does not block until all segments acquired."

Sleep 100 ' Small wait to prevent excessive queries.

myScope.WriteString ":WAVeform:SEGMented:COUNt?"

varQueryResult = myScope.ReadNumber

Loop Until varQueryResult = 50

Debug.Print "Number of segments in acquired data: " _

+ FormatNumber(varQueryResult)

Dim lngSegments As Long

lngSegments = varQueryResult

' For each segment:

Dim dblTimeTag As Double

Dim lngI As Long

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Agilent Technologies InfiniiVision 5000 Series Manual de servicio Pagina 188

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