Humminbird HELIX 9 Operation Manual page 102

Set the Bearing North Reference
North Reference allows you to have the bearing displayed as True North or Magnetic North.
1. Main Menu: Press the MENU key twice. Select the Nav tab.
2. Select North Reference.
3. Select True North or Magnetic North.
Turn on/off Auto Zoom
Turn on Auto Zoom to zoom the Chart View automatically based on the speed of the boat. As the boat's speed increases, the chart
range will increase.
NOTE: The settings in this section do not apply to the Bird's Eye View.
1. Main Menu (Advanced User Mode): Press the MENU key twice. Select the Chart tab.
2. Select Auto Zoom.
3. Select On or Off.
Zoom In/Out: If Auto Zoom is turned on, you can press the +/– ZOOM keys to see more or less of the view, and Auto Zoom will
resume after 20 seconds. To use only the +/– ZOOM keys to adjust the chart range, turn off Auto Zoom.
Turn on/off Auto Range
Turn on Auto Range to set the chart scale to the lowest range so that only the boat icon and the next waypoint in the route are shown.
If Auto Range is turned on, Auto Zoom will be turned off.
NOTE: The settings in this section do not apply to the Bird's Eye View.
1. Main Menu (Advanced User Mode): Press the MENU key twice. Select the Chart tab.
2. Select Auto Range.
3. Select On or Off.
Zoom In/Out: If Auto Range is turned on, you can press the +/– ZOOM keys to see more or less of the view, and Auto Range will
pause. To resume using Auto Range, press and hold the +/- ZOOM keys.
Change the Chart Orientation and Motion Mode 102