Out-panel Overview - cont.
20 96-channel Readout Cards (ROCs) perform analog processing and communicate with LVL1.
20 Transition Cards (TCs) (1 per ROC) allow input signals to enter from backplane.
Passthrough backplanes on P1 and P2 connect each TC to its ROC.
Modified VME backplane for ROC/FEM communication, geographical addressing and power distribution.