Maximum Trunk Line Length

Determine the Maximum Trunk Line Length:

  • Distance between two furthest points.
    • May not be the actual trunk line length.
  • Maximum allowable length is determined by data rate and cable.

To determine the network’s maximum trunk line length, you must measure the distance between the two furthest points. If the distance from the terminating resistor to the last drop line on one side is greater than the length of the last drop line, measure to the terminal resistor. If the distance between terminal resistor and drop line is less than the drop line itself, measure to the device at the end of the drop line. This comparison must be made at both ends of the trunk line.

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