Sea Tel ST88-21 C/Ku-Band TVRO, Installation And Operation Manual

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ST88-21 C/Ku-Band TVRO Installation
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3.15.3. Other BDE Equipment
Refer to the vendor supplied manuals for installation of the other below decks equipment.
3.16. Final Assembly
3.16.1. Remove Stow Braces/Restraints
Remove the restraints from the antenna and verify that the antenna moves freely in azimuth, elevation, and
cross level without hitting any flanges on the radome.
3.16.2. Verify all assembly and Wiring connections
Verify that all pedestal wiring and cabling is properly dressed and clamped in place.
3.17. Power-Up The ADE
Turn Pedestal AC power breaker ON.
3.17.1. Initialization
Turn the pedestal power supply ON. The PCU will initialize the stabilized portion of the mass to be level with
the horizon and at a prescribed Azimuth and Elevation angles. The antenna will go through the specific
sequence of steps to initialize the level cage, elevation, cross-level and azimuth to predetermined starting
positions. Each phase must complete properly for the antenna to operate properly (post-initialization). Refer
to the initialization text in the Troubleshooting section in this manual. Observe the Initialization of the
antenna pedestal.
If any of these steps fail, or the ACU reports model "xx97", re-configure the PCU as described in the Setup
section of this manual. If initialization still fails, this indicates a drive or sensor problem, refer to the
Troubleshooting section.
3.17.2. Home Flag Position
Note the approximate position of the antenna relative to the bow of the ship while it is at the home switch
position. This information will be used later to calibrate the relative position display of the antenna.
3.17.3. BDE
Turn Power ON to the ACU. Record the power-up display, Master (ACU) Model & Software version and the
Remote (PCU) Model & Software version.
3.17.4. Balancing the Antenna
The antenna and equipment frame are balanced at the factory however, after disassembly for shipping or
maintenance, balance adjustment may be necessary. The elevation and cross-level motors have a brake
mechanism built into them, therefore,
power
must be ON to release the brakes and
DishScan® and
antenna drive must be OFF to balance the antenna. . Do NOT remove any of the drive belts . Balancing
is accomplished by adding or removing balance trim weights at strategic locations to keep the antenna from
falling forward/backward or side to side. The antenna system is not pendulous so 'balanced' is defined as the
antenna remaining at rest when left in any position.
The “REMOTE BALANCE” parameter (located at the end of the Remote Parameters after REMOTE TILT) of the
ACU. When enabled, Remote Balance Mode temporarily turns DishScan, Azimuth, Elevation and Cross-Level
drive OFF. This function is required when trying to balance antenna systems that have a built-in brakes on
the elevation and cross-level motors.
Assure that Antenna power is ON and that the antenna has completed initialization.
At the ACU:
1. From the ACU - REMOTE BALANCE parameter: Enable balance mode (refer to your ACU manual).
The screen should now display “REMOTE BALANCE ON”.
At the Antenna:
2. At the Antenna: Balance the antenna with the elevation near horizon (referred to as front to back
balance)
by adding, or subtracting, small counter-weights
.