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Sept. 2022 Cabling Proposal

Executive summary: I think at 100kHz we can keep roughly the same number of nodes that we have in the FEE alcove.

100kHz data volumes:

- wave8: 8waveforms*256samples/sample*2bytes/sample*0.1MHz = 400MB/s
  need to add FEX data too
- piranha: 2048px*2bytes/px*0.1MHz=410MB/s
- hsd full wf: 60000samples*2bytes/sample*0.1MHz = 12GB/s
  max waveform length appears to be ~60000 samples looking at xtc2 file?
  FEX needs to reduce it to 4GB/s (3x)
- bld: 336bytes/event*0.1MHz = 33MB/s
  (from xtcreader -f /cds/data/psdm/prj/public01/xtc/tmoc00118-r0222-s008-c000.xtc2)
- timing: 309bytes/event*0.1MHz = 31MB/s

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