The HP 87130A Attenuator/ Switch Driver simplifies the task of controlling and integrating up to 248 switches and/or step atten- uator sections into RF and micro- wave ATE systems. HP-ITG and HP-VEE software drivers speed system programming for the HP 87130A. Switch driver boards provide switching signals and verify switch positions. Additional driver boards, interconnect boards, and cables provide expanded capacity, remote switching and everything needed for simple device connection.