Raymarine E90W, User Reference Handbook

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9.6 Dual range radar operation
The Dual Range radar function enables you to view 2 ranges at the
same time in separate windows. The function is only available with
HD and SuperHD radar scanners.
Using your multifunction display and an HD or SuperHD digital
radar scanner, you can view either a short or a long range image in
separate radar windows.
The default setting is Long, which provides a standard scanner
range.
Limitations
• Dual Range operation is not available if MARPA targets are active.
• You cannot acquire MARPA targets if Dual Range is enabled.
• Chart-sync and chart overlay are temporarily disabled when Dual
Range is enabled.
Dual range radar compatibility
The range covered by the short Dual Range option depends on the
radar scanner you are using, and the software version it is using.
Scanner
Dual range
mode
Range
covered by
software
versions 1.xx
to 2.xx Range
covered by
software
versions 3.xx
onwards
4 Kw HD Digital
Open Array Long 1/8 nm to 72 nm 1/8 nm to 72 nm
Short 1/8 nm to 3 nm 1/8 nm to 72 nm
4 Kw SuperHD
Digital Open
Array Long 1/8 nm to 72 nm 1/8 nm to 72 nm
Short 1/8 nm to 3 nm 1/8 nm to 72 nm
12 Kw SuperHD
Digital Open
Array
Long
1/8 nm to 72 nm 1/8 nm to 72 nm
Short 1/8 nm to 3 nm 1/8 nm to 72 nm
HD Digital
Radome Long 1/8 nm to 72 nm 1/8 nm to 72 nm
Short 1/8 nm to 72 nm 1/8 nm to 72 nm
Using Dual Range with SuperHD scanners
Dual range radar operation with SuperHD scanners.
When using the short Dual Range option, a SuperHD scanner
operates in HD mode only. When using the long Dual Range option,
a SuperHD radar operates in SuperHD mode.
Using radar
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