Foreword
4 Communication equipment, installation
Communication equipment,
installation
IMPORTANT!
All installations of electronic communication equipment must be
performed by trained professionals and in accordance with Volvo
Construction Equipment instructions applicable to the specified
machine.
Protection from electromagnetic interference
The Volvo Motor Grader is equipped with multiple ECUs that were tested
for Electro Magnetic Compliance. This means that the ECUs are immune
to electromagnetic interference at the levels prescribed in the internation-
al standards. However, if improper installation and use of communication
equipment exceed the limits of these components, the machine may mal-
function. Therefore, it is very important that all non-approved electronic
accessories, such as communication equipment, be tested before the
machine is put into service.
Mobile telephones
To obtain the best functionality, mobile telephones should be permanent-
ly installed in the electrical system of the grader with a permanently fixed
antenna on the cab, installed as advised by the manufacturer.
If a portable mobile telephone is used, note that it can constantly transmit
information to its base station, even when the telephone is not used. For
this reason, it should not be located beside electronic equipment in the
machine, such as directly on a control panel, etc.
Guidelines
The following guidelines must be followed during installation:
– The antenna placement must be chosen to give good adaptation to
the surroundings.
– The antenna cable must be of the coaxial type. Be careful to ensure
the cable is undamaged, that the sheath and braid are not split at the
ends, and the braid covers the connector ferrules and has good gal-
vanic contact with them.
– The mating surface between the antenna mounting bracket and the
bodywork must have clean metal surfaces, with all dirt and oxide re-
moved. Protect the mating surfaces against corrosion after installation
to maintain good galvanic contact.
– Remember to separate interfering and interfered cables physically. In-
terfering cables consist of the communication equipment’s supply ca-
bles and antenna cable. Interfered cables are those which are
connected to electronic devices in the machine. Install the cables as
close as possible to grounded sheet metal surfaces, since the metal
has a shielding effect.
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