Raymarine C120W, Installation Manual

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High alarm loads and third party alarms
You can use the alarm output to switch a relay. This may be useful
for connecting high loads such as third party alarm sounders or
inductive loads to the C-Series multifunction display. If you are in
any doubt as to how to make such connections please consult an
authorized installer.
The C-Series multifunction display has a positive switched alarm
output. The following circuit shows the arrangement for connection
of a relay switch.
Alarm output configured to switch a relay
High current load
Battery +
Battery --
0v return
Relay
Suppression
diode
Alarm out
(+ve)
D1
1
591-1
Note: When connecting the output to a relay or other inductive
device you should fit a spike suppression diode e.g. 1N4001.
3.8 GPS connection
Depending upon your GPS type it may be either connected via
SeaTalk or NMEA 0183.
See also
• For SeaTalk connection refer to: 3.6 SeaTalk connection .
• For NMEA 0183 connection refer to: 3.5 NMEA 0183 connection .
Cables and connections 35