Example: Cable Reference Direction - No Installation

Consider an example where a cable path is created, but with no geometry present in the model.

The Cable reference direction is defined normal to a fictitious ground (in the “up” direction). No twist angle is defined along the cable path.

Figure 1. Specify Cable reference direction with no geometry in the model.
The cable cross section orientation is indicated by:
  • dotted green line: v vector
  • dotted blue line: u vector
  • solid dark blue line: cable reference direction
Note: CADFEKO tries to orientate the v vector at the start of the cable path to align with the cable reference direction automatically using the constraint that the u and v vector must be perpendicular to the cable path.
When using the cable reference direction with no installation present, the following is required in the cable harness and schematic view:
  • No bonding impedances are allowed in the harness, for example, no termination / interconnect circuit connections to the installation.
  • All paths should at least have two signals in the outermost problem to create a return path.
  • All paths in the harness should have an orientation vector defined (if that path does not have any nearby geometry / installation).

Figure 2. Cable harness and schematic view with cable reference direction set.