Installation of the ADU
3-18 Chapter 3: Installation 99-145912-A
3.3.1 To install the ADU
Prerequisites
• Check for potential interference, read more in Interference from
radar, GPS and other transmitters on page 3-13.
• Install the ADU at a location where vibrations are limited to a
minimum.
• Maximum allowed cable loss 20 dB at 1950 MHz. This is to ensure
optimum performance of the system.
Installation procedure
To install the ADU, do as follows:
1. Install the mast with the mast flange and have the 4 M12 bolts
ready.
2. Undo all shipping buckles, take off the wooden top and remove the
casing.
3. Unscrew the 4 bolts holding the ADU on the wooden platform.
4. Attach a webbed, four-part sling with a belt to all 4 lifting brackets.
5. Attach 2 tag lines of suitable length to 2 lifting brackets and man
them.
6. With a crane lift the ADU off the wooden platform and move it on
top of the ADU mast. It is important to maintain vertical
orientation of the ADU center line.
Figure 3-16: ADU installation, webbed sling attached to the 4 lifting brackets
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