The 3488A Switch/Control Unit brings versatile, HP-IB programmable switching to tests requiring multi-channel measurements. The unit provides signal switching with the integrity and isolation needed for high-performance production test systems. It also offers a flexible, low-cost interconnection for automating experiments on the bench and for developing tests in the lab. Manufacturer's Options Option 010 = 10-Channel Relay Multiplexer Module (44470A) Option 011 = 10-Channel General Purpose Relay Module (44471A) Option 012 = Dual 4-Channel VHF Switch Module (44472A) Option 013 = 4 x 4 Matrix Switch Module (44473A) Option 014 = 16-Bit Digital Input/Output Module (44474A) Option 015 = Breadboard Module (44475A) Option 016 = Microwave Switch Module (44476A) Option 017 = Form-C Relay Module (44477A) Option 018 = Microwave Switch Module (44476B) Option 019 = 1.3GHz 50 Ohm Mux (44478A) Option 020 = 1.3GHz 50 Ohm Mux (44478B) Option 401 = Side Handle Kit Option 907 = Front Handle Kit Option 908 = Rack Flange Kit Option 909 = Rack Flange with Handles