Raymarine ST60 Specifications download pdf (Page 29)

Chapter 3: Installation 17

For optimum EMC performance, it is recommended that wherever

possible:

• Raymarine equipment and cables connected to it are:

• At least 3 ft (1 m) from any equipment transmitting or cables car-

rying radio signals e.g. VHF radios, cables and antennas. In the

case of SSB radios, the distance should be increased to 7 ft (2 m).

• More than 7 ft (2 m) from the path of a radar beam. A radar beam

can normally be assumed to spread 20 degrees above and below

the radiating element.

• The equipment is supplied from a separate battery from that used for

engine start. Voltage drops below 10 V in the power supply to our

products, and starter motor transients, can cause the equipment to

reset. This will not damage the equipment, but may cause the loss of

some information and may change the operating mode.

• Raymarine specified cables are used. Cutting and rejoining these

cables can compromise EMC performance and must be avoided

unless doing so is detailed in the installation manual.

• If a suppression ferrite is attached to a cable, this ferrite should not be

removed. If the ferrite needs to be removed during installation it must

be reassembled in the same position.

Suppression Ferrites

The following illustration shows typical cable suppression ferrites used

with Raymarine equipment. Always use the ferrites supplied by

Raymarine.

Connections to Other Equipment

IfyourRaymarineequipment istobeconnectedtoother equipmentusing

a cable not supplied by Raymarine, a suppression ferrite MUST always

be attached to the cable near the Raymarine unit.

D3548-2

81040_1.book Page 17 Thursday, November 7, 2002 10:21 AM

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Raymarine ST60 Specifications Page 29