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3.6 ELECTRICAL CONNECTION
3.6.1 DC POWER CABLE
The RADAR 1000 MK2 will work with any electrical supply within the 10.2
to 16 V range, since it contains a power regulator circuit. Connect the power
cable to a DC source capable of supplying at least 3 A. The power cable should
normally be wired through a circuit breaker. The red lead wire of the power
cable must be connected to the positive source terminal and the black lead to
the source negative terminal. The shielded wire is be connected to Boat Main
ground. Should the power connections be inadvertently reversed, a protective
fuse will blow. In this event, check the input power leads for correct polarity
with a VOM and reconnect the leads in their correct polarity. Replace the fuse.
The fuse is located in the power cable. [NORMAL-BROW FUSE (5 A)
SHOULD BE SPECIFIED]
3.6.2 EXTERNAL SYSTEM INTERFACE
The RADAR 1000 MK2 will interface with any NAV-AID (GPS or LORAN)
and compass with the standard NMEA0182 or NMEA0183 output. The inputs
from the NAV-AID must be digital data conforming to the NMEA0183 formats
to drive various radar features such as waypoint mode. If more than one data
type is present at the radar input (for example; compass and NAV-AID) a prior-
ity system has been established in the radar’s software to respond to the inputs
in driving the features. The assigned priorities are set in this manner:
HEADING: 1. Compass (NMEA0183 “HDG,HDM,HDT,VHW”)
2. NAV-AID (NMEA0183 “RMC,RMA,VTG”)
POSITION: 1. NAV-AID (NMEA0l83 “RMC,RMA,GLL,GTD”)
SPEED: 1. NAV-AID (NMEA0183 “RMC,RMA,VTG”)
2. Compass (NMEA0183 “VHW”)
WAYPOINT: 1. NAV-AID (NMEA0183 “RMB,BWC”)
Using the outline of FIG 3-7 as a guide, connect the RADAR 1000 MK2 to
your NAV-AID and compass.
INSTALLATION