This interposer module is fitted between the SBB canister and the backplane and allows precise switching of the power and low speed signals to the canister. The high speed lines are routed directly through allowing the canister to operate normally.
The canister can be electronically hot-swapped. Each line is connected at a set time (with pin bounce if necessary) allowing any possible hot-swap scenario to be tested.
Lines can also be manually mated and broken to simulate specific failures. This is ideal for creating bugged hardware and testing dual redundant components.