Lowrance electronic LMS-334c iGPS - Manual (Page 163)

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Map orientation (left) is shown in north up and track up (right).
This is fine if you're always traveling due north. What you see to your
left corresponds to the left side of the map, to your right is shown on
the right side of the map, and so on. However, if you travel any other
direction, the map doesn't line up with your view of the world.
To correct this problem, a track-up mode rotates the map as you turn.
Thus, what you see on the left side of the screen should always be to
your left, and so on. Another option is course-up mode, which keeps the
map at the same orientation as the initial bearing to the waypoint.
When either the track-up or course-up mode is on, a "N" shows on the
map screen to help you see which direction is north.
Map Menu (left). Map Orientation menu with
the North Up map orientation option selected (right).
To change map orientation: from the Map Page, press MENU |
↓ to
M
AP
O
RIENTATION
| ENT . Use
↑ ↓ to select the desired mode, then press
ENT .
Press EXIT | EXIT to return to the main page display.
In Track Up mode, map shows "N" and arrow to indicate north.