Hello sir, we are currently dealing with the same problem you experinenced years ago. Could you help us figuring out how to set the connection between tti 1906 multimeter and computer. We need to see the measurements on computer taken from the multimeter. We have a bunch of the same model multimeters. However, we could not find any code for the computer interface and could not make the multimeter worked in accordance to our needs. Could you share your knowledge if you had solved this problem. That would be very nice if you see and answer this post. Thank you in advance.