JRC JMA-3400 Series, Инструкция по эксплуатации, Страница: 242 / 314

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Chapter 9 TRUE OR FALSE EHOS ON DISPLAY
If radar equipment causing an interference pattern and this radar are of the same model, their
transmitting repetition frequency is nearly the same. As a result, interference patterns may be displayed
concentrically.
In this case, the interference patterns cannot be eliminated by using only the interference reflector
function, so press the [TX/PRF] key several times to fine-tune the transmitting repetition frequency.
An interference suppressing effect can be heightened by applying a different transmitting repetition
frequency to the interference pattern source radar and this radar.
9.5 DISPLAY OF RADAR TRANSPONDER (SART)
The SART (Search and rescue Radar Transponder) is a survival device authorized by the GMDSS
(Global Maritime Distress and Safety System), which is used for locating survivors in case that a
distress accident occurs at sea. The SART is designed to operate in the 9 GHz frequency band. When
receiving the 9 GHz radar signal (interrogating signal) transmitted from the radar equipment on a rescue
ship or search aircraft, the SART transmit a series of response signals to inform the distress position to
the rescue and search party.
Perform the following settings to display SART on the radar screen.
(1) Range : 6 NM or 12 NM
(2) [SEA] control : Turning to the minimum position (counterclockwise fully)
(3) Automatic sea clutter
suppression function
: Off (Set to manual sea clutter suppression.)
(4) Tuning function : Off (for less clutter)
(5) IR : Off
(6) Processing : Off
When performing the settings (1) to (6) above to display the SART signal, targets
around own ship will disappear from the radar display. T h u s , it is necessary
to exercise full surveillance over the conditions around own ship by visual watch in
order to avoid any collision or stranding.
If two or more sets of radar equipment are installed on own ship, use one set of 9
GHz band radar for detection of the SART signal and operate others
as normal radars for avoiding collision, monitoring targets around own ship, and
checking on own ship's position and avoidance of stranding.
After the detection of SART signal, the radar adjustment is required for general
navigation.
Note: