Using Zoom Range; Using Bottom-Lock - Humminbird Platinum ID 600 Operation Manual

6. Using Zoom Range;

Factory Setting: OFF
Zoom Range provides an up-close view. To
activate it, select ZOOM RANGE and press ONOFF. The
Zoom view begins initially at the surface; press the UP or
DOWN arrow to adjust Zoom depth. The range of the
display is shown when Zoom is on.
The Zoom range depends on the current Depth
Range: 7 l/2' in the 15' and 30' Depth Ranges; 15' feet in
the 60', 120' and 180' Depth Ranges; and 30' in the 240',
360' 480', and 600' Depth Ranges
You can adjust zoom depth before activating
zoom, in which case the zoom range will be shown with
horizontal dotted lines.

7. Using Bottom-Lock;

Factory setting: OFF
Bottom-Lock provides an up-close view like Zoom
Range, except that in this case the zoomed view
automatically moves up or down to stay on the bottom. To
use this feature, select BOTTOM LOCK and press ON-
OFF. The range of the display is shown when Bottom-
Lock is on.
This is an ideal feature for finding structure or
locating fish near the bottom.
Remember: If Bottom-Lock is the last function you
selected, you can use the ON-OFF button to switch
Bottom-Lock on and off without having to press SELECT
first.