Icom MR-1220 Instruction Manual - Page 33

AIS RECEIVER 5 AIS settings ■■AIS menu You can customize the settings in the AIS menu. [MENU]/[ ] > AIS Display AIS Targets Sets whether or not to display AIS symbols when the radar is in transmitting (TX) mode. LLRegardless of this setting, AIS information is displayed when an AIS target reaches the CPA and TCPA limits. Display Tracks Sets whether or not to display the tracks of up to 5 dots for each AIS symbol. You can set the interval of the track in "Track interval" in the Target menu. [MENU]/[ ] > Target > Track interval Display Target's Name Sets whether or not to display the names of targets. OFF: Does not display the Target name. Selected: Displays only the name of the selected target. Active Targets: Displays all the name of active targets. Auto Activate Function Sets whether or not to automatically activate a sleeping AIS target when the target comes into the specified area. You can specify the area in the "Distance (Auto Activate)" and "Angle (Auto Activate)" settings. Distance (Auto Activate) Sets the maximum range for the Auto Active function by distance. Range: 0.1 ~ 10.0 (NM), 0.2 ~ 18.5 (km), or 0.1 ~ 11.5 (SM). LLThe distance unit varies, depending on the "Unit (Distance)" setting in the Initial menu. Angle (Auto Activate) Sets the maximum range for the Auto active function by angle. Range: 5° ~ 180° in 5° steps New Target Warn (Auto Activate) Sets whether or not to alert you when an AIS target has automatically been activated. Display Range Sets the range for displaying the AIS targets All range from your vessel. •• 0.1 ~ 36.0 (NM), 0.2 ~ 66.7 (km), or 0.1 ~ 41.4 (SM): Sets the distance from your vessel by 0.1 steps. Maximum Targets 1 Sets the maximum number of AIS targets that radar displays to between 10 and 100. 2 Slow Warn Function 3 Selects whether or not to use the Slow Warn function. Since AIS units cannot rely on COG (Course Over 4 Ground) data for vessels that are anchored or drifting, CPA (Closest Point) and TCPA (Time to CPA) may 5 not be calculated correctly. If a vessel stays in your alarm zone, the collision warning may sound multiple times with unreliable data, even if there is no actual 6 danger. To prevent this, if the SOG (ground speed) of the vessel is lower than this setting, the Slow Warn 7 function considers as the vessel's COG is fixed toward your vessel. 8 Speed (Slow Warn) 9 Sets the range of the target vessel's speed in 0.1 steps to activate the Slow Warn function. 10 Range: 0.1 ~ 5.0 (kn), 0.2 ~ 9.3 (km/h), or 0.1 ~ 5.8 (mph). 11 Clear Lost Targets Clears all of the Lost Targets. 12 Select and Push [ENTER]/[ ] to clear the Lost targets. 13 Display Safety Message 14 Sets whether or not to display a message when it is received. 15 ■■Related settings 16 DDTarget menu 17 You can change the target settings for AIS operation. 18 The settings of the Target menu are commonly used for the ARPA and AIS operations. See page 39 for the 19 Target menu details. These are the Target menu items and their default 20 settings. • Vector Mode: True 21 • Vector Time: 6 min • Track Interval: 1 min • CPA Limit: 1.0 NM • TCPA Limit: 1 min • CPA/TCPA Alarm: ON LLCPA (Closest Point of Approach) and TCPA (Time to Closest Point of Approach) limits are set to give a warning when a target or targets enter those limits around your own vessel. 28