National Instruments has introduced the SwitchBlock for PXI, which is an expandable carrier that occupies four PXI slots and accommodates up to six relay cards.
The carrier has a high-voltage analogue bus which can be used to expand the relay cards into large matrices, with more than 2,000 crosspoints in a single carrier.
These can be further expanded and up to four SwitchBlock carriers can be combined to create internally routed matrices with as many as 8,832 crosspoints in a single PXI chassis.
The carrier offers a number of relay card options, including topologies and relay types to address a variety of large-matrix test needs.
It is possible to custom configure the SwitchBlock with different relay cards in a single.