■Connecting the units
NMEA1 connection NMEA2 connection
■Power source requirement
DDC power source
The radar is designed for connection to any power
source if the voltage is 10.2–42 V DC, so that a 12, 24,
or 32 V DC battery can be used without a DC-DC con-
verter, or any internal modifications.
• DC power cable connection
Connect the supplied DC power cable as shown in the
diagram.
■Ground connection
To prevent electrical shocks and other problems, ground the display unit through the [GND] terminal on the unit’s
rear panel. For best results, connect a heavy gauge wire or strap to the nearest grounding point on the boat. The
distance between the [GND] terminal and the ground point should be as short as possible.
CAUTION:Incorrect cable connection may dam-
age the radar.
DC input Ground
q N TXT
(NMEA 2 output)
w RXD
i GND u N.C
y AUX input (–); CLOCK
or N+1(–) data input
t AUX input (+); CLOCK
or N+1(+); data input
r NMEA 1 input (–)
or AUX input (–); DATA
e NMEA 1 input (+)
or AUX input(+); DATA
NMEA1:
Bearing data input
NMEA2:
NMEA 0183 data input
Speed sensor input
+
Ground
Power supply
10.2 to 42 V DC
Red: Black: _
PWR
GND
NEVER connect any-
thing other than the sup-
plied scanner unit.
Supplied scanner unit
9INSTALLATION AND CONNECTIONS
24
q NMEA 2
output (+)
w NMEA 2
output (–)
e NMEA 2
input (+)
u GND (Speed sensor)
y Speed sensor
input
t Regulated 12 V output.
(20 mA Max.)
r NMEA 2 input (–)
MR-1000R2_T2.qxd 04.2.24 10:22 Page 24