Raymarine SL520 GPS Receiver User Manual


 
Chapter 6: Installation 6-21
Using the SeaTalk
Auxiliary Junction
Box
Figure 6-11: NMEA Input Connection
Using the SeaTalk Auxiliary Junction Box
A junction box (provided with the chartplotter display) is used to connect the
SeaTalk system to the display unit.This junction boxenables the SeaTalk bus,
power and GPS to be connected.
If power is not already available (via another SeaTalk instrument), the
junction box can be used to apply power to the SeaTalk bus for other
applications. The junction box may also be used for other purposes, e.g.
supplying power to a flux gate compass and routing the compass data to the
display NMEA In connection, or alternatively, for connecting a NMEA GPS
system.
The junction box includes:
SeaTalk cable and connector to attach to display unit
Power cable to connect to 12 V power (if required)
Input connections to connect SeaTalk cable from external equipment
Spare connections for another instrument
CAUTION:
Ensure correct polarity of the 12 V supply before applying SeaTalk
power. It is recommended that a multimeter is used to check the
connections.
Figure 6-12 shows how to connect the junction box; for details specific to
your GPS, refer to the handbook supplied.
+12 V
0V
+ NMEA Data (orange)
-- NMEA Data (yellow)
D3604-1
Red
Black
Yellow