SeaTalk NG power connection point

The point along the backbone where the power connection should be made is based on the length of the backbone.

ConnectionsPowerSeaTalk NGPower

Note

  • A 12 V dc power supply must be connected to a white spur SeaTalk NG connection on the backbone.

  • Do NOT connect the power connection to a blue SeaTalk NG backbone connector.

  • With the exception of the iTC-5 and the backbone itself, do NOT connect the power supply directly to a product’s white SeaTalk NG spur connector.

Small systems

Backbone length, SeaTalk NG Network length, SeaTalk NGIf the backbone length is 60 m (197 ft) or less, the Power connection point power connection may be made at any point in the backbone.

Large systems

If the backbone length is greater than 60 m (197 ft), the power connection should be made at a point that creates a balanced current draw from each side of the backbone. Load equivalency number Load Equivalency Numbers (LEN) are used to determine the power connection point for the system.

In the example above, the system has an overall LEN of 16, so the optimum connection point would be to have a loading of 8 LEN either side of the connection point.