Furuno 841 MARK-2 manual Display Unit Installation, Mounting considerations

Models: 841 MARK-2

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7.Pass the cable through the hole at the bot- tom of the radome base.

8.Secure the cable with the cable clamping plate and gasket. Ground the shield and vi- nyl wire by one of the screws of the cable clamping plate.

9.Connect the wire to the RF unit.

to one of the screws

of the cable clamping plate

9-pin connector:

to J801 on MD-9208

4-pin connector:

to J802 on MD-9208

13-pin connector: to J611 on IF-9214

Figure 5-7 Signal cable, antenna unit side

J802

J801MD-9208

Cable entry

PTU-9335

J611

IF-9214

Figure 5-8 RF unit

10.Attach the EMC core supplied as shown below.

J801 J802

J804

Cable entrance

Cable clamping plate

J805 MD9208

J806

J803

Motor

EMC core E04SS251512 (Above cable J1 clamping

plate)

PTU-9335

J613

J611 IF9214

Figure 5-9 How to attach EMC core

11. Fix the shield cover. Do not pinch the cable.

12.Attach the radome cover, aligning triangle mark on radome cover with that on radome base.

Radome cover

Radome base

Figure 5-10 How to position the radome

cover

13.Loosely fasten the radome fixing bolts. You will tighten them after confirming magne- tron heater voltage.

5.2 Display Unit Installation

Mounting considerations

When selecting a mounting location for the display unit keep in mind the following points.

The display unit is designed and con- structed to be splashproof, thus it can be installed outdoors. You can even hose it down after a day’s outing. If it is to be in- stalled outdoors, we recommend installing it an enclosed cabinet, for maximum pro- tection against the marine environment.

The temperature and humidity of the mounting location should be stable and moderate. No LCD can provide adequate contrast if the ambient temperature is too extreme.

The display unit consumes only a moder- ate amount of power, so there is no need for forced air ventilation. However, you should provide adequate space behind and around the unit to permit circulation of air and to provide convenient access to the rear connectors.

Even though the picture is quite legible even in bright sunlight, keep the display unit out of direct sunlight or at least shaded because of heat that can build up inside the cabinet.

Locate the display unit in a position where you can view and operate it conveniently but where there is no danger of salt or fresh water spray or immersion.

The orientation of the display unit should be so the radar screen is viewed while the operator is facing in the direction of the bow. This makes determination of your position much easier.

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Furuno 841 MARK-2 manual Display Unit Installation, Mounting considerations