Installation Guide

First InterComm ™ System Installation Guide
A29799 Page v
November 2007
EMC Installation Guidelines
The design and manufacture of the VCA100 conforms to the appropriate Electromagnetic
Compatibility (EMC) standards, but correct installation is required to ensure that performance is not
compromised. Although every effort has been taken to ensure that it will perform under all conditions, it is
important to understand what factors could affect the operation of the product.
The guidelines given here describe the conditions for optimum EMC performance, but it is recognized
that it may not be possible to meet all of these conditions in all situations. To ensure the best possible
conditions for EMC performance within the constraints imposed by any vehicle, always ensure the
maximum separation possible between different items of electrical equipment.
For optimum
EMC performance, it is recommended that wherever possible:
The equipment and cables connected to it are:
• At least 3 ft. (1 m) from any equipment transmitting or cables carrying radio signals
• The cables specified in this manual are used. Cutting and rejoining these cables can
compromise EMC performance and must be avoided.
• 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.
General Precautions
• DC Power – Ensure that power into the First InterComm™ System does not exceed 24VDC.
• Explosive Environments
– Ensure the First InterComm™ System is turned off before entering a
blasting area, or in areas posted “T
URN OFF TWO-WAY RADIO”. Sparks in a potentially explosive
atmosphere can cause an explosion or fire resulting in bodily injury or death.