Integrated Systems - Raymarine SL70M Owner's Handbook Manual

Chapter 6: Installation

6.8 Integrated Systems

The displays can be linked to other equipment to transfer data as follows:
• Data can be received via SeaTalk or NMEA, some of which will increase
the functionality of the display. Other data can be viewed on the display.
• Data can be transmitted via SeaTalk and NMEA to enhance other equip-
ment.
• Some incoming data can be converted across the communication link and
re-transmitted - see Data Conversion on page 6-27.
Power for External Equipment
External equipment cannot be powered from the display's SeaTalk
interface. It must be powered from the ship's supply or via a SeaTalk bus.
Ensure correct polarity of the SeaTalk connection.
For systems where the ship's power source is 24 V only, you may need to
install a 24 V to 12 V DC converter. This is only necessary if the products
being connected to the display are:
• SeaTalk compatible (for example, compass, GPS and instruments), and
there is no existing SeaTalk bus
• NMEA compatible, but operate only from 12 V (for example, compass,
GPS and some navigators)
The DC~DC converter must conform to the following specification:
Table 6-2:
Input
Output
Load
DC-DC Converter for External Equipment
21 to 32 V DC
13.6 V DC, isolated
Continuous current rating, in excess of required load
6-21