Garmin AIS 800 Technical Reference for Garmin NMEA 2000 Products - Page 8
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NMEA 2000 Fundamentals Linear Backbone Construction Use the NMEA 2000 T-connectors to construct your NMEA 2000 backbone, and extend the backbone with appropriate lengths of backbone cable if necessary. Use one T-connector per device. Use the sides of the T-connector to construct the backbone of the NMEA 2000 network, and use the top of the T-connector to attach a NMEA 2000 device. By using only the sides of the T-connectors to construct the backbone, you create a linear construction to your NMEA 2000 network. T-connectors can be separated by backbone cables or connected directly together. Although the male and female connectors on the T-connectors and backbone cables will fit on all sides of a T-connector, it is very important to use the top of the T-connector only to attach NMEA 2000 devices, not to attach other T-connectors or backbone cables. To NMEA 2000 devices and power Female terminator CORRECT Backbone extension cable Male terminator T-connector installed incorrectly Male terminator (also installed incorrectly) Correct Linear Backbone Construction To NMEA 2000 devices and power INCORRECT Backbone extension cable Male terminator Incorrect Linear Backbone Construction 4 Technical Reference for Garmin NMEA 2000 Products