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To activate the interference rejector;
1. Press the [RADAR MENU] key. The following appears.
[FUNCTIONS (1)]
1 TARGET TRAILS
2 TARGET ALARM (1 or 2)
3 ORIGIN MARK (1 to 10)
4 INDEX LINES
5 ZOOM
6 PULSE WIDTH
7 INT REJECT
8 ARPA
9 VIDEO PLOT
0 [FUNCTIONS (2)]
Figure 1-18 RADAR menu
2. Press the [7] key to select INT REJECT.
3. Successive presses of the key increase the effect of interference rejection, up to level
3. A fourth press deactivates the interference rejector. Switch off the interference rejec-
tor when no interference exists; otherwise weak targets may be lost.
Note: For stable reception of certain types of radar beacons (Racons) or SART (Search
and Rescue Radar Transponder) as required by SOLAS 1974 as amended 1988 (GMDSS),
it is recommended to turn the interference rejector off.
1.17 Measuring the Range
Use the fixed range rings to obtain a rough estimate of the range to a target. They are the
concentric solid circles about own ship, or the sweep origin. The number of rings is auto-
matically determined by the selected range scale and their interval is displayed at the
upper-left position of the screen.
1.17.1 Adjusting range ring briliance
1. Press the [RADAR MENU] key to display the FUNCTIONS 1 menu.
2. Press the [0] key to display the FUNCTIONS 2 menu.
3. Press the [9] key to display the BRILLIANCE 1 menu.
[BRILLIANCE (1)]
1 [FUNCTIONS (2)]
2 RINGS BRILL OFF/DIM/M1/M2/BRT
3 EBL BRILL DIM/M1/M2/BRT
4 VRM BRILL DIM/M1/M2/BRT
5 +CURSOR BRILL OFF/DIM/M1/M2/BRT
6 CHAR BRILL DIM/M1/M2/BRT
7 MARK BRILL DIM/M1/M2/BRT
8 TRAIL BRILL DIM/M1/M2/BRT
9 HL BRILL DIM/M/BRT
0 [BRILLIANCE (2)]
Figure 1-19 BRILLIANCE 1 menu