MDC-2900 Series
Chapter 1 Prior to installation
0092629012-07
1-3
1.4.2 Display unit and Operation unit
(1)
The orientation of the Display unit shall be such that the user is looking ahead, the lookout
view is not obscured and there is minimum ambient light on the display viewing surface.
(2)
Choose the best location from humidity, spray, rain, and direct sunlight.
(3)
Keep sufficient maintenance area. Especially sufficient space is required near the back panel
where cables are concentrated.
(4)
Keep as far as possible from other radio devices.
(5)
Keep a safe distance from the magnetic compass.
Table1.2 Safety distance of compass from Display unit
Display unit type
Standard compass
Steering compass
MRD-105
1.90 m
1.20 m
MRM-105
0.60 m
0.45 m
MRO-105
1.65 m
1.10 m
1.5 Cable wiring and interconnection
1.5.1 Antenna-Scanner unit
(1)
The connecting cable between the Antenna-Scanner unit and the Display unit should run apart
from any other radio antenna cable or power cables of the other devices. Do not lay the radar
cable in parallel to the sea surface together with other cables. These considerations are
effective to prevent random radio interference between systems. When these measures
cannot be applied because of space limitations, use metal pipes for each cable or other
suitable ways to shield.
(2)
In order to maximize the performance of the radar, the antenna cable and the power cable
should be as short as possible, and should be laid within the nominal length
(3)
Connect the shielded braided wire of the antenna cable to the grounding terminal inside the
Antenna unit.
1.5.2 Display unit
(1)
Ground the braided wire of a cable firmly with the cable clamp fixing screw to the back panel.
(2)
The Display unit housing should be grounded to the ship ground by using the ground terminal
of the back panel.