Installation of the ADU (S1000 antenna)
98-175666-D Chapter 2: Installation 2-18
2.3 Installation of the ADU (S1000 antenna)
The following sections describe the installation and grounding of the ADU. The ADU is
shipped fully assembled. Install it on the mast and attach the ADU cable.
2.3.1 To install the ADU
Prerequisites
• Ensure that the crane hook has a closing mechanism to prevent accidental slippage
of the lifting straps.
• Mount the antenna as far away as possible from the ship’s radar and high power
radio transmitters, read more in Interference from radar, GPS/GNSS, L-band and
other transmitters on page 2-14.
• Install the ADU at a location where vibrations are limited to a minimum.
• Make sure that there is sufficient space underneath the ADU to open the service
hatch.
• Important: Maintain the vertical orientation of the ADU center line.
WARNING! Use a strong webbed sling with a belt to lift the ADU without
damaging the radome. Make sure that the sling can carry
105 kg.
WARNING! The ADU may be subject to swaying motions in windy
conditions. Always use tag lines to stabilize the ADU during
hoisting. It is the crane operator’s responsibility to
determine whether the environmental conditions are
suitable for a safe lift.
Figure 2-15: Use of strong sling with a belt and tag lines for safe hoisting
Webbed sling with belt
Tag lines
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