Raymarine SL70RC PLUS Series User Manual page 200

Chapter 8: Installation
SeaTalk
The SeaTalk standard was originally developed by Autohelm (part of
Raymarine), and allows compatible instruments to be connected by a single
cable carrying power and data in/out. This means that additional instruments
and functions can be added to a SeaTalk system, simply by plugging them into
the network.
SeaTalk is a precise, high-speed, bi-directional protocol which is flexible
enough to adapt to any number of instruments, without a central processor.
SeaTalk equipment can also communicate with non-SeaTalk equipment via
the NMEA standard.
SeaTalk Connection
SeaTalk data, if present, is the primary source for all navigational data except
heading.
The SeaTalk input/output should be connected at the rear SeaTalk 3-pin
connector. This appears as follows, when viewed from outside:
SeaTalk In/Out
Figure 8-12: SeaTalk Connector
Table 8-4:
Pin No.
1
2
3
Note:
1. If you use the SeaTalk connector you must fit the supplied ferrite to the cable
for EMC CE conformance. The ferrite must be clipped to the cable as close to
the connector as possible.
2. The display does not supply 12 V via the SeaTalk connector, neither does the
SeaTalk connector require 12 V to operate.
12 V is required for other SeaTalk units.
3. If you are connecting an active compass to the radar, the NMEA input has
Sea Talk Connections
Function Color
+12 V Red
0 V Shield
Data Yellow
1. Red (No internal connection)
2. Screen (0V)
3. Yellow (Data)
8-23
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