Operation Manual

8120 Installation and Operation Manual73
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Connections
18-3 Installation: The display unit
Start by selecting a suitable mounting
position for the 8120 display unit:
• Consider the best possible position for
viewing and operating the 8120. This will
generally be a relatively shaded area free
from obstructions.
• At least 4” (100 mm) away from the
compass, at least 12” (300 mm) away from
any radio transmitter and at least 4 ft (1.2
m) away from any antenna.
• For optimum performance and reliability
consider mounting the unit where it will
not be unnecessarily exposed to direct
sunlight, water and protected from other
physical damage which could occur
during rough sea passages.
• If bracket mounting chose a flat area
where the display will not be subjected
excessive vibration.
• Select an area with adequate clearance for
cabling and access to the power source.
• Before drilling any holes ensure that
the drill area is free from cables or other
obstructions.
 Sonar Sonar Transducer
 Video in Video Input (Analogue composite [NTSC-
PAL])
 Comms Not Used
 GPS NAVMAN 1240 GPS Antenna
 Fuel/Nav - NAVMAN Fuel TXD
- Diesel Fuel TXD
- Smartcraft Gateway
 Not Used
 Power/data cable
Wire Function
Black Ground: power negative, NMEA ground
(Connect both black wires to ground)
Brown Not Used
White NMEA out
Blue NavBus-
Red Positive power in, 10 to 35 V DC
Orange NavBus+
Yellow Auto power - Connect to red wire (positive
power in) to enable Auto power
No Auto power - Leave disconnected or
ground
Green External Alarm output or light out, switches
to ground during alarm condition, 200 mA
maximum.