Hioki BT4560, Instruction Manual, Page: 51 / 62

48

External Trigger Measurement
Measures and imports based on external triggering (TRIG signal input), and saves measurements in a text file.
Private Sub MeasureTrigSubRS()
Dim recvstr As String 'Receiving character string
Dim i As Integer
MSComm1.CommPort = 1 'COM1 (Check a communication port)
MSComm1.Settings = "9600,n,8,1" 'Set a communication port (not required with USB)
MSComm1.PortOpen = True 'Open a port
Open App.Path & "¥data.csv" For Output As #1 'Open a text file for saving
MSComm1.Output = ":FUNC RV" & vbCrLf 'Select (R,X,V,T) measurement function
MSComm1.Output = ":MEAS:VAL 1" & vbCrLf ‘Output only the measurement value
MSComm1.Output = ":TRIG:SOUR EXT" & vbCrLf 'Select external triggering
MSComm1.Output = ":INIT:CONT OFF" & vbCrLf 'Continuous measurement OFF
For i = 1 To 10
MSComm1.Output = ":READ?" & vbCrLf 'Send “:READ?” to measure and import the measurement
recvstr = "" 'From here on, continue receiving until an LF code occurs
While Right(recvstr, 1) <> Chr(10)
recvstr = r MSComm1.Input
DoEvents
'After comfirming external trigger signal, measure once, and read the measurement value.
Wend
recvstr = Left(recvstr, Len(recvstr) - 2)
'Delete the terminator (CR+LF)
Print #1, Str(i) & "," & recvstr 'Write to the file
Next
Close #1
MSComm1.PortOpen = False
End Sub