Yacht Devices YDNG-03, Руководство пользователя, Страница: 11 / 48

— 11 —
The network backbone (between 2 and 2 at Figure 3) has two data lines (called CAN HIGH and CAN LOW)
and two power lines. Power lines should be connected to a 12-Volt power supply (see 3 at Figure 3).
Low-powered devices, like our Gateway, take power directly from the network backbone.
Data lines are “terminated” at both ends with a 120-Ohm resistor (see 2 at Figure 3). Therefore, resistance
between CAN lines is between 60 and 120 Ohms. Devices can be connected to any place of backbone
(between terminators). The cable from network backbone to the Device is called a drop cable (see 4
at Figure 1). Our devices can be connected directly to a backbone.
All the above does mean that you can not simple connect the Gateway to a NMEA 2000 port of your chart
plotter to connect a NMEA 0183 sensor to it. You should establish a simple NMEA 2000 network first.
Many manufacturers offer a “Starter Kit” which contains all that is necessary to establish a basic network
and connect two devices:
• for Raymarine SeaTalk NG, see Raymarine part number T70134;
• for NMEA 2000, see Garmin part number 010-11442-00.