To Change The Chart Mode Color Scheme; Sonar Page & Sonar Chart Display Options; Full Sonar Chart - Eagle FISHMARK 640C Installation And Operation Instructions Manual

To change the chart mode color scheme:

1. From the Sonar Page, press |↓ to | .
MENU S F ENT
ONAR EATURES
2. Press → to
| .
S C M ENT
ONAR HART ODE
3. Press ↓ or ↑ to Mode Name|
.
ENT
4. Press | to return to the Sonar Page.
EXIT EXIT
Sonar Page & Sonar Chart Display Options
The Pages Menu offers three chart display options. To access them, press
↑ or ↓ to Option Name|
.
PAGES EXIT
Pages Menu showing sonar chart display options.

Full Sonar Chart

This is the default mode used when the unit is turned on for the first
time or when it's reset to the factory defaults.
The bottom signal scrolls across the screen from right to left. Depth
scales on the right side of the screen aid in determining the depth of
targets. The line at the top of the screen represents the surface. The
bottom depth and surface temperature (if equipped with a temperature
sensor or a transducer with a temp sensor built in) show at the top left
corner of the screen.
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