Sea Tel 9797A-27, Инструкция по установке и эксплуатации

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9797A-27 C-Band TXRX Installation
4-5
12
Gently restrain the antenna prior to lifting the ADE onto the ship to restrict movement inside the
radome during the lift.
4.4.2. Preparing the ADE for Lift
Install Stow Braces, or other restraints, on the Antenna Pedestal. Attach shackles and web type lifting
harness to the four lifting holes in the base-frame.
4.4.3. Assembling The GPS Engine
A Deck stub mast and a Hand-rail mount are provided. Assemble the GPS to the desired mounting and
attach the cable.
4.5. Installing The ADE
4.5.1. Hoist
WARNING: Hoisting with other than a webbed four-part sling may result in catastrophic
crushing of the radome. Refer to the specifications and drawings for the fully assembled
weight of your model Antenna/Radome and assure that equipment used to lift/hoist this
system is rated accordingly.
CAUTION: The antenna/radome assembly is very light for its size and is subject to large
swaying motions if hoisted under windy conditions. Always ensure that tag lines, attached
to the radome base frame, are attended while the antenna assembly is being hoisted to its
assigned location aboard ship.
1
Assure that the antenna is restrained before hoisting. Check that all nuts on the base frame
assembly are tightened according the torque values listed below:
2
Using a four-part lifting sling, and with a tag line attached to the radome base frame, hoist the
antenna assembly to its assigned location aboard ship by means of a suitably-sized crane or
derrick.
3
The radome assembly should be positioned with the BOW marker aligned as close as possible
to the ship centerline. Any variation from actual alignment can be compensated with the
AZIMUTH TRIM adjustment in the DAC-97 so precise alignment is not required.
4.5.2. Install Antenna/Radome/Baseframe
Bolt, or weld, the legs of the radome base frame directly to the ship's deck. If the deck is uneven or not
level, weld clips to the deck and attach them to the legs of the radome base frame. When completed the
radome base must be level.
4.5.3. Install GPS Engine
Install the GPS antenna and route the cable to the ACU directly, or to the radome (see GPS Cable
Terminations below).
4.5.4. Cooling Unit Assembly - TX SYSTEMS ONLY
If cooling unit is supplied, refer to the drawings provided for detailed instructions on assembly and