Icom MR-1220 Instruction Manual - Page 45

MENU SCREEN 8 Menu items ■■Video TUNE Sets the tuning method to Auto or Manual. "TUNE (Auto)" or "TUNE (Man)" is displayed in the upper right corner of the screen. Manual TUNE Sets the tuning value when the "Tune" is set to "Manual." Dynamic Range Sets the dynamic range of the Plain Position Indicator (PPI). •• Narrow: Even weak reflections are displayed as strong reflections. •• Middle: Middle dynamic range. •• Wide: You can easily distinguish between weak reflections and strong reflections. Interference Reduction (IR) Function Sets the interference reduction type to OFF (Disabled), 1 (Low), or 2 (High). LLWhen this function is enabled, or is displayed in the upper right of the screen. Echo Stretch Function Selects whether or not to use the Echo Stretch function. LLWhen this function is enabled,"ES" is displayed in the upper left of the screen. Pulse Width Setting Sets the transmitting pulse width to Short (narrow) or Long (wide). LL is displayed in the upper left of the screen when using the Long pulse. SEA Curve Level The SEA knob can be used to fine tune the sea clutter of the display after one of 4 main levels (1 ~ 4) is selected, based on the sea conditions. Antenna Height Sets the antenna height from the surface of the sea, according to your antenna installation. Options: 5, 10, 15, 20, 30, 40, or 50 (m) 3D - Transparent Sets whether or not to transparent the PPI in the 3D view. ■■System 1 2 Key Beep Sets whether or not to sound a beep when a key is 3 pushed. Key Backlight Sync 4 Sets whether or not to synchronize the brilliance of the display and the key backlights. 5 Temporarily Hide Line 6 Selects the action during [MENU (HL-OFF)]/ [ ( )] is held down. 7 •• Only Heading Line: Hides only heading line. •• All: Hides the heading line, range 8 rings, and other objects. Zone Alarm 1, Zone Alarm 2 9 Sets the type of the zone alarms. •• Enter: An alarm sounds when the target comes into 10 the zone. •• Exit: An alarm sounds when the target goes out of 11 the zone. Zone Alarm Level 12 Selects the target detection parameter of zone alarms from Low, Middle, or High. 13 OFF Center Function 14 Sets the setback ratio when the OFF Center function is ON. 15 •• 25 %, 50 %, 75 %: Your own ship position in the screen moves 16 backward at the set ratio, and the bow view increases. 17 •• Cursor: Your own ship position in the screen moves to the cursor, and the opposite view increases. 18 Save Time 19 Selects the standby time during the save mode from 1, 6, 15 or 30 minutes. 20 LLThe radar for a TX interval scan is fixed at 10 revolutions. Bearing Type 21 Selects the displayed bearing type, regardless of the bearing data format (NMEA, N+1, AUX, GPS, or GPS-L). •• True: True North bearing. •• Magnetic: Magnetic North bearing. 40