Sea Tel 9797A-27, Installation And Operation Manual

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Installation 9797A-27 C-Band TXRX
4-6
installation of the cooling unit and any associated intake and exhaust diffusion ducting.
4.6. Install BDE Equipment
4.6.1. ACU & TMS
Refer to the Antenna Control Unit manual for installation of the ACU and the Terminal Mounting Strip.
4.6.2. Other BDE Equipment
Refer to the vendor supplied manuals for installation of the other below decks equipment.
4.7. Cable Terminations
4.7.1. At The Radome
The TX and RX, or TVRO IF, cables must be inserted through the cable strain reliefs at the base of the
radome. Apply RTV to the strain relief joints and tighten the compression fittings to make them watertight.
Attach the pedestal cable adapters to the TX and RX, or TVRO IF, cables from below decks. Refer to the
System Block Diagram.
AC Power cable for the Antenna Pedestal and RF Equipment is routed into the AC Power Breaker box
and connected to the breaker terminals.
Sea Tel recommends that separate, dedicated, AC Power be provided for the Marine Air Conditioner (Do
NOT combine with the AC Power provided for the Antenna Pedestal and RF Equipment). This AC Power
cable is routed into the Marine Air Conditioner and terminated to the AC terminals inside.
4.7.2. GPS
The cable from the GPS engine may be routed into the radome or directly to below decks depending on
where the GPS engine is mounted. Whenever possible route the GPS Cable directly to the below decks
equipment.
If the GPS Cable is not long enough, route it into the radome to a terminal strip and connect an additional
cable routed to the below decks equipment to the terminal mounting strip. Both the entry and exit cables
must be inserted through strain reliefs at the base of the radome. Apply RTV to the strain relief joints and
tighten the compression fittings to make them watertight.
4.7.3. ACU & TMS
To Connect AC Power, GPS connection, Gyro Compass Connection and IF Input refer to the Antenna
Control Unit manual. Installation of optional (remote) Pedestal, and /or Radio, Monitor & Control
connection(s) from a PC Computer are also contained in the ACU manual.
4.7.4. Other BDE Equipment
Refer to the vendor supplied manuals for installation of the other below decks equipment.
4.8. Final Assembly
4.8.1. Mount RF Equipment (TXRX Only)
Install the RF equipment on the elevation beams (TXRX Systems ONLY) Connect the TXIF & RXIF
cables, RF Transmit and Receive waveguide sections from the appropriate feed (C-Band or Ku-Band) to
the appropriate SSPA or TWTA and Radio package (C-Band Pair or Ku-Band pair) according to the block
diagram.
4.8.2. Remove Stow Braces/Restraints