Garmin 100 User Manual

Using the echo 100 and echo 150

You can set an alarm to sound when the battery reaches a specified low 

voltage.
1.  From the Sonar screen, select MENU > Setup > Alarms > Battery > 

On.

2.  Select the low battery voltage that triggers the alarm.
The alarm setting appears on the Alarms screen.

You can set an alarm to sound when the device detects a suspended target.
  From the Sonar screen, select MENU > Setup > Alarms > Fish > On.

You can set the rate at which the sonar scrolls from right to left.
Use a higher scroll speed to see more detail, especially while moving or 

trolling. Use a lower scroll speed to display the sonar information on the 

screen longer.
1.  From the Sonar screen, select MENU > Setup > Sonar > Scroll.
2.  Select a scroll speed.

When using a dual frequency transducer, you can select a frequency for the 

echo 150 Sonar screen when using a dual frequency transducer.
NOTE: The echo 100 operates only at 200 kHz.
You can show data from a 200 kHz sonar signal or data from a 77 kHz sonar 

signal. The 200 kHz frequency shows better detail, has a narrower beam, and 

is typically used in shallower waters. The 77 kHz frequency penetrates deep 

water more effectively and has a wider beam, so it can be used to cover a 

larger area.
1.  From the Sonar screen, select MENU > Setup > Sonar > Frequency.
2.  Select a frequency.

You can set how the sonar interprets suspended targets.
1.  From the Sonar screen, select MENU > Setup > Sonar > Fish ID.
2.  Select an option:

•  To show suspended targets as symbols, select  .
•  To show suspended targets as symbols with target depth information, 

select  .

•  To show suspended targets as symbols with background sonar 

information, select  .

•  To show suspended targets as symbols with background sonar 

information and target depth information, Select  .