Synchronizing Acquisitions
10
Agilent InfiniiVision 7000A Series Oscilloscopes Programmer's Guide
777
Blocking Synchronization
Use the :DIGitize command to start the acquisition. This blocks subsequent
queries until the acquisition and processing is complete. For example:
'
' Synchronizing acquisition using blocking.
' ===================================================================
Option Explicit
Public myMgr As VisaComLib.ResourceManager
Public myScope As VisaComLib.FormattedIO488
Public varQueryResult As Variant
Public strQueryResult As String
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::130.29.69.12::inst0::INSTR")
myScope.IO.Clear
' Clear the interface.
' Set up.
' -----------------------------------------------------------------
myScope.WriteString ":TRIGger:MODE EDGE"
myScope.WriteString ":TRIGger:EDGE:LEVel 2"
myScope.WriteString ":TIMebase:SCALe 5e-8"
' Acquire.
' -----------------------------------------------------------------
myScope.WriteString ":DIGitize"
' Get results.
' -----------------------------------------------------------------
myScope.WriteString ":MEASure:RISetime"
myScope.WriteString ":MEASure:RISetime?"
varQueryResult = myScope.ReadNumber
' Read risetime.
Debug.Print "Risetime: " + _
FormatNumber(varQueryResult * 1000000000, 1) + " ns"
Exit Sub
VisaComError:
MsgBox "VISA COM Error:" + Err.Description
End Sub
Summary of Contents for InfiniiVision 7000A Series
Page 1: ...Agilent InfiniiVision 7000A Series Oscilloscopes Programmer s Guide...
Page 34: ...34 Agilent InfiniiVision 7000A Series Oscilloscopes Programmer s Guide 1 What s New...
Page 44: ...44 Agilent InfiniiVision 7000A Series Oscilloscopes Programmer s Guide 2 Setting Up...
Page 58: ...58 Agilent InfiniiVision 7000A Series Oscilloscopes Programmer s Guide 3 Getting Started...
Page 750: ...750 Agilent InfiniiVision 7000A Series Oscilloscopes Programmer s Guide 8 Error Messages...
Page 922: ...922 Agilent InfiniiVision 7000A Series Oscilloscopes Programmer s Guide Index...