Features Key features of the Model 7174A Low Current Matrix Card include: • Eight row by twelve column (8×12) switching matrix configuration, with signal and guard switched at each crosspoint • Paths have offset currents of less than 100fA with typical offset currents of 50fA • Maximum Leakage Currents: Pin to Ground -- 0.01 pA/V Pin to Pin -- 0.005 pA/V • 3-lug Triaxial Connectors (Signal, Guard, Chassis) for all row and columns allow guarding of each signal path- way, minimizing effects of stray capacitance, leakage current, and leakage resistance • Model 7174A cards can be connected together internally using the supplied SMB to SMB cables (jumpers) to expand the number of columns in the matrix.