Simrad AP20 Autopilot
74
20220505H
4.24
External Alarm
The external alarm circuit has an open collector output for an
external alarm relay or buzzer. The operating voltage for the
circuit is the main supply voltage. Max. load on external alarm
output is 0.9 Amp.
Ext.
alarm
TB6
J300X/J300X-40 JUNCTION UNIT
POWER PCB
TB7
TB8
TB9
Figure 4-23 External alarm connection
4.25
NI300X NMEA Interface Unit
The NI300X is normally installed inside a console or locker
close to Nav receivers, radar and instruments to keep cables
short. The unit does not have controls that need to be operated
during installation or use, but you should be able to take the lid
off for inspections, to view LED indication of received signals. It
should be installed with the cable inlet and the Robnet
connectors facing down. The NI300X is designed to operate in a
location that provides ambient temperatures below +55°C
(+130°F). It is fastened to the panel/bulkhead by the external
mounting brackets.
Note !
The NI300X is not weatherproof, and must be installed in a dry
location!
The NI300X NMEA Interface (expansion) Unit is designed to
handle installations where more NMEA lines have to be tied into
the system. Four NMEA ports are available. An additional
output data-port with DATA/CLOCK signal is capable of
generating heading data in the format used by some radar
displays made by Anritsu and Furuno. This feature is thus added
to the system if a J3000X Junction Unit is installed (J3000X has