Raymarine RayTech RNS 5.0, User Manual

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Chapter 8: Using sonar 71
How do I get a closer view of an image?
Zoom enlarges all or part of the scrolling bottom display. You should select automatic
zoom if you want to keep the bottom in the lower half of the display page. Alternatively
you can select the level of zoom to a factor of x2, x4 or x6, proportional to the current
range. You can also split the sonar image vertically to show the zoomed area on the left
of the screen and the scrolling bottom on the right of the screen.
1. Click
Zoom
. The Zoom softkeys will be displayed.
2. Click
Zoom
to On. The Zoom image replaces the scrolling bottom image.
3. Click appropriate softkeys to set up zoom as required.
8.6 How do I mark a position on the screen?
You can use a sonar mark (sm) to indicate a position on the sonar image. The sm is
stored in the waypoint list so that you can name it, save it as a waypoint and return to
the same spot. A sm is displayed on the sonar image as a solid vertical line with the
label sm displayed at intervals along the line. The sm scrolls across the screen with the
image.
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