21.13 Dual range radar operationThe Dual Range radar function enables you to view2 ranges at the same time in separate windows. Thefunction is available with SuperHD and HD radarscanners.Using your multifunction display and an HD orSuperHD radar scanner, you can view either a shortor a long range image in separate radar windows.The default setting is Long, which provides astandard scanner range.Limitations• Dual Range operation is not available if MARPAtargets are active.• You cannot acquire MARPA targets if Dual Rangeis enabled.• Radar/chart sync and radar/chart overlay aretemporarily disabled when Dual Range is enabled.Dual range radar compatibilityThe range covered by the short Dual Range optiondepends on the radar scanner you are using, andthe software version it is using.ScannerDual rangemode*Rangecovered bysoftwareversions1.xx to 2.xxRangecovered bysoftwareversions3.xxonwards4 Kw HDOpen ArrayLong (1) 1/8 nm to 72nm1/8 nm to 72nmShort (2) 1/8 nm to 3nm1/8 nm to 72nm4 KwSuperHDOpen ArrayLong (1) 1/8 nm to 72nm1/8 nm to 72nmShort (2) 1/8 nm to 3nm1/8 nm to 72nm12 Kw HDOpen ArrayLong (1) n/a 1/8 nm to 72nmShort (2) n/a 1/8 nm to 72nm12 KwSuperHDOpen ArrayLong (1) 1/8 nm to 72nm1/8 nm to 72nmShort (2) 1/8 nm to 3nm1/8 nm to 72nmScannerDual rangemode*Rangecovered bysoftwareversions1.xx to 2.xxRangecovered bysoftwareversions3.xxonwardsHD Radome Long (1) 1/8 nm to 48nm1/8 nm to 48nmShort (2) 1/8 nm to 48nm1/8 nm to 48nmLimitations of software version 1.xx and 2.xx• The value for the short range setting must be lessthan or equal to the long range setting.• With Dual Range On and a short range windowactive Expansion control shall be disabled in theEnhance Echoes menu.Using Dual Range with SuperHD scannersDual range radar operation with SuperHD scanners.When using the short Dual Range option, a SuperHDscanner operates in HD mode only. When using thelong Dual Range option, a SuperHD radar operatesin SuperHD mode.Scanner DualRangemode Operating mode4 Kw SuperHDOpen ArrayLong SuperHDShort HD12 Kw SuperHDOpen ArrayLong SuperHDShort HDEnabling Dual Range radar operationIn the radar application.1. Select Menu.2. Select Presentation.3. Select Dual Range so that On is highlighted.Selecting Dual Range will switch between dualrange On and Off.Selecting range operationWith Dual Range set to on and the radar applicationscreen displayed:1. Select Menu.2. Select Presentation.3. Select Dual Range Channel to switch between1 or 2, as appropriate.Radar application 325
