Here is the DSOS 99 Channel Controller Unit.
Its thermistor inputs, split into 4 quadrants, enters via its front panel.  There are 10 (10) channel control boards in this unit, along with a Xilinx zero card.  All the unitŐs power supplies are house in here.  The indicator LEDs on the front panel light when the desired length change is acquired.  The output signals are routed out the rear of the Unit and connect to their respective Driver Units.
~Melanie Leong~