At the company I work for, one of the tasks I had to complete was to finish building a lateral compression tester used in our lab to test the firmness of breast implants. This second fixture was to be shipped to our R&D team based in California so that they could also run the same tests as us instead of shipping implants to us solely to get test data for. The staff engineer on our team made this device from scratch several years ago from which the second testing fixture was modeled off a few months ago. Once the fixture was built and wired exactly, all I had to do was perform V&V testing to ensure that the testing fixture was communicating to the custom made LabView program. The labview program read force values in lbf units from a force gauge sensor, which was connected to a load cell on the testing fixture. I assumed since everything was built to be exactly like the original testing fixture and that the wiring followed the wiring diagram to the dot that there would be no issues. Of course when one assumes this, usually circumstances will prove them wrong. The fixture wasn’t communicating to the computer and it took me some time to figure out that I just had to reassign COM ports to the USB connections so that LabView can read them and also that I had to change the force gauge sensor settings to communicate via RS232 instead of USB. It was a simple fix but making sure all the settings matched up to the original testing fixture from the beginning would have saved me a lot of time in the long term because the fixture was delayed from being shipped out by 2 weeks!