Switching systems are often needed to automate and speed up the testing of multiple devices in a production environment, and when making mixed signal measurements during R&D and production. Mixed signal measurements on multiple devices increases the importance of switching systems as a means of achieving high test system throughput. Still, there are a number of potential pitfalls in choosing and configuring the switch hardware and software for such a test system. These can lead to less than optimal speed, measurement errors, shortened switch life, and excessive system cost. This white paper explains how to avoid these problems.