From: wb8foz@panix.com

"The sense and braking unit (SBU) is a device placed on the
rear of the train and is connected to the train brake pipe. The
SBU senses train movement, monitors brake pipe pressure, and
sends the information to the locomotive, where it is displayed
in the cab. The SBU can also be used to initiate an emergency
brake application from the end of the train.  The SBU data
from MMA-002 were downloaded (Engineering Laboratory Report
LP132/2013). "

How different is this from a FRED?
Are the logs stored in the SBU or the cab?


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