Keysight P9241, Scpi Programmer'S Manual

Page: 1249 / 1344

Programming Examples
38
Keysight P9241/42/43A Oscilloscopes SCPI Programmer's Guide 1249
'
' Keysight VISA Example in Visual Basic
' -------------------------------------------------------------------
' This program illustrates a few commonly-used programming
' features of your Keysight oscilloscope.
' -------------------------------------------------------------------
Option Explicit
Public err As Long ' Error returned by VISA function calls.
Public drm As Long ' Session to Default Resource Manager.
Public vi As Long ' Session to instrument.
' Declare variables to hold numeric values returned by
' viVScanf/viVQueryf.
Public dblQueryResult As Double
Public Const ByteArraySize = 5000000
Public retCount As Long
Public byteArray(ByteArraySize) As Byte
Public paramsArray(2) As Long
Public Const DblArraySize = 20
Public dblArray(DblArraySize) As Double
' Declare fixed length string variable to hold string value returned
' by viVScanf/viVQueryf.
Public strQueryResult As String * 200
' For Sleep subroutine.
Private Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Long)
'
' Main Program
' -------------------------------------------------------------------
Sub Main()
' Open the default resource manager session.
err = viOpenDefaultRM(drm)
If (err <> VI_SUCCESS) Then HandleVISAError drm
' Open the session using the oscilloscope's VISA address.
err = viOpen(drm, _
"TCPIP0::10.112.94.136::hislip9-0.0::INSTR", 0, 15000, vi)
If (err <> VI_SUCCESS) Then HandleVISAError drm
' Set the I/O timeout to ten seconds.
err = viSetAttribute(vi, VI_ATTR_TMO_VALUE, 10000)
If (err <> VI_SUCCESS) Then HandleVISAError vi
' Initialize - start from a known state.
Initialize
' Capture data.
Capture
' Analyze the captured waveform.
Analyze