Mappings
 
 
Electrodes hooked to FEM cards
Which FEM cards in each Sector
For one FEM card:
- Production serial number
 - Platform/Rack/Crate as applicable
 - Low Voltage supply
 - High Voltage supply (?)
 - Timing Fiber input
 - DCM Fiber output (“routing” FEM?)
 - Trigger Fiber output, if applicable
 - ARCnet node ID, subnet ID