Raymarine e7D, Руководство по установке и эксплуатации, Страница: 52 / 270

5.1 Selecting a location
Warning: Potential ignition source
This product is NOT approved for use in
hazardous/flammable atmospheres. Do NOT install in
a hazardous/flammable atmosphere (such as in an
engine room or near fuel tanks).
General location requirements
When selecting a location for your display it is important to consider
a number of factors.
Key factors which can affect product performance are:
• Ventilation
To ensure adequate airflow:
– Ensure that equipment is mounted in a compartment of suitable
size.
– Ensure that ventilation holes are not obstructed. Allow
adequate separation of equipment.
Any specific requirements for each system component are
provided later in this chapter.
• Mounting surface
Ensure equipment is adequately supported on a secure surface.
Do not mount units or cut holes in places which may damage the
structure of the vessel.
• Cable entry
Ensure the unit is mounted in a location which allows proper
routing and connection of cables:
– Minimum bend radius of 100 mm (3.94 in) unless otherwise
stated.
– Use cable supports to prevent stress on connectors.
• Water ingress
The display is suitable for mounting both above and below decks.
It is waterproof to IPX6 standard. Although the unit is waterproof,
it is good practice to locate it in a protected area away from
prolonged and direct exposure to rain and salt spray.
• Electrical interference
Select a location that is far enough away from devices that
may cause interference, such as motors, generators and radio
transmitters / receivers.
• Power supply
Select a location that is as close as possible to the vessel’s DC
power source. This will help to keep cable runs to a minimum.
Compass safe distance
To prevent potential interference with the vessel’s magnetic
compasses, ensure an adequate distance is maintained from the
display.
When choosing a suitable location for the multifunction display you
should aim to maintain the maximum possible distance between
the display and any compasses. Typically this distance should
be at least 1 m (3 ft) in all directions. However for some smaller
vessels it may not be possible to locate the display this far away
from a compass. In this situation, the following figures provide the
minimum safe distance that should be maintained between the
display and any compasses.
D 12203-1
2
00 m
m
(7.8
7 in)
350 m
m
(13.8
in)
300 m
m
(11.8
in)
700
mm
(27
.5 i
n)
500
mm
(19
.7 i
n)
250 m
m
(9.8
4 in)
1
2
3
4
5
6
Item
Compass position in
relation to display Minimum safe distance
from display
1 Top 200 mm (7.87 in.)
2 Rear 500 mm (19.7 in.)
3 Right-hand side
350 mm (13.8 in.)
4 Underside 300 mm (11.8 in.)
5 Front 700 mm (27.5 in.)
6 Left-hand side 250 mm (9.84 in.)
Viewing angle considerations
As display contrast, color and night mode performance are all
affected by the viewing angle, Raymarine recommends you
temporarily power up the display when planning the installation, to
enable you to best judge which location gives the optimum viewing
angle.
Viewing angle
000
000
000
000
000
000
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D 12268-1
A
B
C
D
e7 / e7D
e95 / e97 / c95 /
c97 e125 / e127 /
c125 / c127
A 70º 80º 80º
B 70º 80º 80º
C 70º 80º 80º
D 50º 60º 60º
Note: The angles stated are for a contrast ratio of equal to or
greater than 10.
52 e7 / e7D / e95 / e97 / e125 / e127 / c95 / c97 / c125 / c127