Agilent/HP E5255A multiplexer cards for use with E5250A mainframe(pictured above).
6 low-current (triaxial) inputs; 3 dc-bias (coaxial) inputs per card
Modular design supports x24, x48, x72,and x96 triaxial output configurations
Can gang up to four E5250A mainframes together to support up to 384 output channels