Raymarine SL520 GPS Receiver User Manual


 
Chapter 6: Installation 6-17
Integrated Systems
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 6-23.
Power for External Equipment
External equipment cannot be powered from the displaysSeaTalk
interface. It must be powered from the ships supply or via a SeaTalk bus.
Ensure correct polarity of the SeaTalk connection.
For systems where the ships 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: DC-DC Converter for External Equipment
Input 21 to 32 V DC
Output 13.6 V DC, isolated
Load Continuous current rating, in excess of required load