ps2000Handle = ps2000_open_unit()
        ps2000Handle2 = ps2000_open_unit

        If ps2000Handle = 0 Then
            Console.WriteLine("Device not opened.")
            Exit Sub
        End If

        Dim deviceId1 As String = getDeviceInfo(ps2000Handle)
        Dim deviceId2 As String = getDeviceInfo(ps2000Handle2)
        deviceId1 = deviceId1.Replace("/", "_")
        deviceId2 = deviceId2.Replace("/", "_")