I have been using a PE 1600 connected to a computer running Spectrum for over 2 years. Recently the PC and FTIR lost communication. The FTIR works fine, I just can no longer communicate with the PC. I have tried deleting and reloading the software, switching com port, with no success. The company that sold us the PC and Spectrum software is at a los to help. So I am reaching out to cyberspace for help.