Raymarine hsb2 PLUS Owner's Handbook Manual page 61

Chapter 2: Installation
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
Plus Series display NMEA In connection, or alternatively, for connecting
hsb 2
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. Use a multimeter to check the connections.
Figure 2-17 shows how to connect the junction box; Appendix B provides
connection details for specific Raymarine, Apelco and Autohelm GPS and
Beacon Receiver systems.
To Display Unit
SeaTalk Socket
12V
Power
Supply
Fused
Figure 2-17: Using the Auxiliary Junction Box
Cable Core
SeaTalk Black (screen)
Red
Yellow
Power Black (screen)
Red
GPS Black (screen)
Red
Yellow
To GPS
Power Out: 1 & 2
Power In: 1 & 3
Spare
Input
Terminal Function
1 0V
2 +12v
3 SeaTalk
1 0V
2 +12V
1 0V
2 +12V
3 SeaTalk
2-27
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