User's Manual

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Wiring | Halo pulse compression radar installation manual
NMEA 0183
The RI-12 has one NMEA 0183 (RS422) to accept heading and position information. The NMEA
0183 port accepts data at 4,800 baud.
Sentences used HDG, HDT, HDM, GGA, GLL, RMC, VTG. Heading should be at a minium of 10
Hz update rate.
NMEA 0183 RX_A
NMEA 0183 RX_B
RI-12 heading source selection:
The RI-12 receives heading via the NMEA 2000 network and transmits this data to the radar,
where MARPA processing is performed.
For Simrad installations with more than one heading source the RI-12 will use the Simrad group
source. The source used by the Simrad group can be viewed or changed via the multifunction
display in the Settings>Network>Sources… menu.
 Note: If an NMEA 0183 heading source is connected the RI-12 will use this. It will ignore a
NMEA 2000 heading source.
Antenna park
The Halo® Pulse Compression Radar has the ability to stop rotating the antenna and hold it
at a predetermined angle in relation to the ships heading line. The park angle is set in the
display (see “Adjust open array park angle” on page 28). In conjunction with this setting there
is a park angle retention feature which is a very low current electromagnet that will provide
resistance for the antenna to maintain a parked angle against wind and movement. The park
brake requires a continuous low current DC supply (10-32 V DC). This draws less than 100uA.
+
_
12 -24 V DC
Draft_08_April_2015