VB.net GPIB Termination character problem

Question

This is my first question here. I have a problem with the termination character when sending a message on the GPIB Default character is line feed and my instrument needs a carriage return.

I ́v tried to change it but when I sniffing at the bus it is still line feed. Anyone knows what I ́m doing wrong?

EDIT: As I understand instrEprobe.IO.TerminationCharacter only affects the receiving message from instrument but I need to send message with carrage return and not line feed

BR Niklas

Public Function InitEprobe(ByVal strGpib As String, ByVal Type As String)
 ioMgr = New Ivi.Visa.Interop.ResourceManager
 instrEprobe = New Ivi.Visa.Interop.FormattedIO488
 Try
 Dim Out As String = ""
 instrEprobe.IO = ioMgr.Open("GPIB0::" & strGpib) 'set GPIBport
 instrEprobe.IO.TerminationCharacter = 13 ' set termination character
 instrEprobe.IO.TerminationCharacterEnabled = True
 instrEprobe.WriteString("I") 'Send command to instrument
 Wait(500)
 Out = instrEprobe.ReadString 'Read command from instrument
 Return Out
 
 Catch exp As Exception
 Return exp.ToString
 End Try
 End Function

• Jimi: Is instrEprobe.IO.TerminationCharacter supposed to be an integer, or a char or string?
• Niklas A: It shall be an integer. I can in debug mode see that the varible is set to 13, but still line feed when using N/I io trace
• djv: This looks like a similar issue stackoverflow.com/q/32120946/832052
• Niklas A: Unfortaintly, I dont find a solution in that issue