Simrad NX45 Specifications download pdf (Page 74)

Simrad NX40/45 Installation and Operation Manual74

If you are in Range Rider mode when you adjust the sea

clutter level, the sea clutter mode does not change to

manual but the setting is stored and used automatically

whenever you use the same range again.

To change the sea clutter level

> Adjust Radar > Sea Clutter Level >

18-6-5 Changing the rain clutter

Rain clutter consists of random dots that can merge into

badly-dened echoes on your radar screen.

The random signals are returned from rain, hail, sleet, or

snow and can result in a confusing display.

If the rain clutter is set too low, there will be excessive

rain clutter shown whenever it’s raining. If the rain clutter

is set too high, very large targets such as the coastline

will appear to be hollow.

To change the rain clutter setting

> Adjust Radar > Rain clutter >

18-6-6 Changing the threshold level

Use this to dene the threshold level of the weakest echo

that you want to show on the radar screen. The threshold

level is shown as a percentage.

100% is the maximum threshold level, meaning that only

the strongest echoes are shown. 0% is the minimum

threshold level, meaning that all echoes are shown.

To change the threshold level

> Presentation > Threshold >

18-7 Changing the echo expansion setting

If you have several small targets in view and want to

make them easier to see, use the echo expansion

option.

Note that the resolution decreases as the target size

increases, so use this option only when target detection

and visibility is more important that the quality of the

display.

To change the echo expansion setting

> Presentation > Echo Expansion

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Simrad NX45 Specifications Page 74