The six-slot Model 707B and single-slot Model 708B switch mainframes extend Keithley's decades-long commitment to innovation in switch systems optimized for semiconductor test applications. These large-format mainframes build upon the strengths of their popular predecessors, the Models 707/707A and 708/708A, adding new features and capabilities designed to speed and simplify system integration and test development. New control options and interfaces offer system builders even greater flexibility when configuring high performance switching systems for use in both lab and production environments. Just as important, both new mainframes are compatible with the most popular large-format switch cards developed for the Models 707A and 708A, simplifying and minimizing the cost of switch system migration.