Garmin Colorado 400c Quick Reference Manual Download Page 2

The Flasher screen (dual beam transducer only) provides 

an almost instantaneous return of what is below your 

boat. The depth scale is organized as a ring that starts 

at the top, or 12:00, and progresses clockwise. Sonar 

information flashes on the ring when it is received at the 

depth indicated on the inside ring. Like the regular graph, 

The colors indicate different strengths of the sonar return.
On the Home screen, highlight 

Flasher

, and press 

SELECT

.

Flasher ring

Depth

Use the Split Freq screen (dual frequency transducer 

only) to view both the 50kHz and 200kHz frequencies on 

the same screen.
On the Home screen, highlight 

Split Freq

, and press 

SELECT

.

Depth, 

temperature, 

and speed

Range

Frequencies

Understanding the Split Freq Screen

Understanding the Flasher Screen

Understanding the Split Zoom Screen

Press 

HOME

 from any screen to return to the Home 

screen.
Press 

MENU

 from any of the main screens to access 

advanced settings.
Press and release the   

POWER

 key to adjust the 

display settings.

Please visit 

www.garmin.com

 for additional documentation  

and information.

Tips and Shortcuts

Use the Split Zoom screen to view the full sonar data 

from the graph as well as a zoomed in portion on the 

same screen. 
On the Home screen, highlight 

Split Zoom

, and press 

SELECT

Depth, temperature, 

and speed

Range

Zoom 

window

Zoomed 

depth scale

Transducer mode

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