Bedienungsanleitung Raymarine Dragonfly (Seite 21 von 118) (Englisch)

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3.8 Cable routing

Cable routing requirements for the transducer cable.

Important: To avoid interference, the cable must

be routed as far away from VHF radio antenna

cables as possible.

• The cable can be routed through or over the

transom.

• Check that the cable is long enough to reach

the equipment that it will be connected to. An

optional 4 m (13.1 ft) extension cable is available

if required.

• Ensure there is enough slack in the transducer

cable, at the transducer end, to allow the

transducer to pivot up and down.

• Secure the cable at regular intervals using the

supplied cable clips.

• Fill all transom mounting holes with marine-grade

sealant prior to tightening securing screws.

• Fill the transom cable hole with marine-grade

sealant after routing the cable (if routing through

the transom).

• Use the supplied escutcheon to cover over

the transom cable hole (if routing through the

transom).

• Any excess cable can be coiled up at a convenient

location.

3.9 Selecting a location for the display

General location requirements

When selecting a location for the unit it is important

to consider a number of factors.

Ventilation requirements

To provide adequate airow:

• Ensure that equipment is mounted in a

compartment of suitable size.

• Ensure that ventilation holes are not obstructed.

• Ensure adequate separation of equipment.

Mounting surface requirements

Ensure units are adequately supported on a secure

surface. Do NOT mount units or cut holes in places

which may damage the structure of the vessel.

Cable routing requirements

Ensure the unit is mounted in a location which allows

proper routing and connection of cables:

• Minimum cable bend radius of 100 mm (3.94 in) is

required unless otherwise stated.

• Use cable supports to prevent stress on

connectors.

Electrical interference

Select a location that is far enough away from

devices that may cause interference, such as

motors, generators and radio transmitters/receivers.

GPS location requirements

In addition to general guidelines concerning the

location of marine electronics, there are a number

of environmental factors to consider when installing

equipment with an internal GPS antenna.

Mounting location

• Above Decks mounting:

It is recommended that the display is mounted

above decks as this provides optimal GPS

performance.

• Below Decks mounting:

GPS performance may be less effective when

mounted below decks.

Vessel construction

The construction of your vessel can have an impact

on GPS performance. For example, the proximity

of heavy structures such as a structural bulkhead,

or the interior of larger vessels may result in a

reduced GPS signal. Before locating equipment

with an internal GPS antenna below decks, seek

professional assistance.

Prevailing conditions

The weather and location of the vessel can affect the

GPS performance. Typically calm clear conditions

provide for a more accurate GPS x. Vessels at

extreme northerly or southerly latitudes may also

receive a weaker GPS signal. GPS antenna mounted

below decks will be more susceptible to performance

issues related to the prevailing conditions.

Planning the installation

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