Air Brakes and Train Handling Rules - Alaska Railroad

68.8.1 EOT Unit Identification68 EOT Telemetry DevicesSet the five thumbwheel switches on the LCU to the same 5-digit IDnumber used by your train’s EOT unit. If you set an incorrect IDnumber, the LCU and EOT unit cannot communicate with eachother.68.8.2 Pressure Display (Normal Display)Once the LCU turns on and receives a valid report from the EOTunit, the LCU shows the normal display. The normal display givesthe air pressure in psi using up to three digits on the right side of thedisplay.[ 123]68.8.3 Odometer FunctionA. Understanding Odometer OperationThe odometer function allows the engineer to obtain a reading of thedistance traveled by the locomotive. The odometer function uses thedistance and calibration buttons.The odometer function on the LCU operates as follows:1. When the LCU is first turned on, the odometer is set for alocomotive wheel size of 38 inches. After the odometer iscalibrated, the LCU will give the correct distance for wheel sizesfrom 36 to 42 inches.2. After the odometer display shows 9999 feet, it starts over at0000 feet.CAUTION: The odometer cannot distinguish betweenforward and reverse movement. If the train stops and movesin reverse, the odometer will continue to increase.3. When the odometer display is in use, messages and alarms aresuppressed as follows:June 1, 1996 ARRC Air Brakes and Train Handling Manual 68-23