Humminbird LCR 100, Operation Manual

3. Enabling Fish Alarm; 

Factory setting: OFF 
 
The Fish Alarm alerts you with a chirping sound whenever 
the LCR 100 detects fish (or another object not attached to 
the bottom). To activate it, select FISH ALM and press the 
ON-OFF button. A fish symbol reminds you that the alarm 
is on. 
 
The fish alarm is especially helpful in identifying targets 
near the bottom or structure that might not be apparent 
unless the zoom or bottom lock mode is selected. 
 
 
 
 
 
 
 
 
 

4. Using Zoom; 

Factory setting: OFF 
 
Zoom provides an up-close view. To activate it, select 
Zoom and press ON-OFF: The Zoom view initially 
begins at the surface; pressing the Up or Down arrow 
adjusts Zoom depth. The range of the display is shown 
when Zoom is on. 
 
The Zoom range depends on the current Depth Range: 
7 1/2' in the 15' and 30' Depth Ranges, 15' in the 60' 
and 120' Depth Ranges, and 30' in the 180' to 600' 
Depth Ranges. (Metric display: 3m in the 6m and 9m 
ranges, 5m in the 15m and 30m ranges, and l0m in the 
45m to 185m ranges.) 
 
Remember: If Zoom is the last function selected, you 
can use the arrow buttons to adjust the Zoom depth or 
ON-OFF to switch Zoom on and off without having to 
press SELECT first. The word zoom will be shown on 
the display when the zoom function is enabled.