Sea Tel DAC-03, Инструкция по установке и эксплуатации

Страница: 11 / 80

DAC-03 Tracking Antenna Controller Operation
2-1
2. Operation
Operation of your system is accomplished from the Antenna Control Unit (ACU). There is no Operation of the
Radome or Antenna Pedestal, other than from the ACU.
When power is turned ON, the ACU Display will initially show “
SEA TEL INC - MASTER
” and the ACU software
version (ie DAC-03 VER 4.13 ). 10 seconds later, the display will switch to “ SEA TEL INC - REMOTE ” and
“ INITIALIZING ”, until the Pedestal Control Unit (PCU) completes initialization of the antenna pedestal. When
initialization is completed the PCU will report its Model & Software version (ie
9797A VER 1.51
). Initialization
takes approximately two minutes.
2.1. Quick Start Operation
If your system has been set up correctly, is using factory default parameters and the ship has not moved
since the system was used last … Quick start operation of the system from a cold start involves the following
steps.
1. Turn on the AC power switches for the Antenna Pedestal, Antenna Control Unit (ACU) and other
Below Decks Equipment.
2. Press SHIP to check the Latitude, Longitude and Heading values. Latitude and Longitude should still
be correct, but may be updated if necessary. Heading in most cases will be 000.0 and you will have
to enter the
initial value of the ships current heading. Press SHIP 3 more times to select ship's
heading (HDG) entry mode. Use the NUMBER keys to enter the current ships heading and press
ENTER . Entry of ships heading is not required when your system is connected to a 1:1 Synchro or
NMEA 0183 Heading Gyro Compass output.
3. You may wish to press SAT to view (or change) the Satellite longitude and the tracking receiver
tuning information OR press ANTENNA to monitor the antenna position information during
normal operation.
When Initialization is completed the ACU, target the desired satellite (SAT), the Search LED will flash while
the antenna is moving to the targeted AZ & EL position, then;
A. If no signal is found: The Tracking LED will flash for a short period of time (SEARCH DELAY) followed
by the Search LED coming ON . The ACU will automatically set the tracking threshold and move the antenna
in a spiral SEARCH pattern. The search movement will stop when the ACU receives a signal (AGC) value that
is greater than the threshold value. Tracking will take over (Tracking LED
ON
) and automatically peak the
antenna position for highest receive signal level from the satellite which has been acquired.
B. If a satellite signal is found: The ACU will be receiving a signal (AGC) value that is greater than the
threshold value. Tracking will take over (Tracking LED ON ) and automatically peak the antenna position for
highest receive signal level from the satellite which has been acquired.
Upon completion of the above , the system will continue to operate automatically indefinitely or until:
AC power to the system is interrupted
OR
The satellite signal is blocked
OR
The ship sails into an area of
insufficient satellite signal level.