Sailor SC4000 Iridium, Техническое руководство

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12
Installation IRIDIUM
0514
Precautions
In order to avoid interference or any other kind of
disturbances from other systems on board, there are a
few precautions to take note of:
Radars
According to any installation guide for radars it is of vital
importance that any other units are kept outside the
radiation beam of the radar. Please consult the illustration
down below, showing what area to avoid:
36622A
10°
e.g. from the radar
Avoid interference
10°
10°
Unobstructed view until
10° below the horizon
GPS
Tests have shown that only in case very old GPS equipment
is used, a user may expect a minor influence on the GPS
originated from the Iridium equipment. This can be avoided
by ensuring a distance of at least 1 m between the two
antennas.
Inmarsat equipment
The operating frequency bands of the iridium and Inmarsat
systems are neighbours, and it is not in any way by any
technical solution possible to completely separate these
bands. This means that interference from Inmarsat can
be expected, especially if the antennas are placed near
each other. The distance between the antennas Should
be as far as possible.
If in any way the user experiences trouble using Iridium
because of Inmarsat, a filter can be provided as an option.
This filter is placed in a suitable place between the
antenna and the transceiver. The filter is a passive type
not requiring external power. Please contact your dealer
for further information.