When it comes to testing a cabling installation, there are essentially three choices–verification, qualification and certification. Verification is great for troubleshooting as it will tell you if your cabling is connected correctly and can help you find breaks, connectors and splices. Qualification lets you know if your cable under test will support a specific application, making it great for small moves, adds and changes or determining if an existing cable plant can support an application. But only certification will tell you if the cable plant fully meets industry standards – it’s the only test that measures across predefined ranges and compares the results to TIA, ISO and IEEE specifications to determine if a link is compliant with a specific category or class of cable and able to support the application. Certification is also what most cable manufacturers require for a warranty.