Eagle Electronics FISHMARK 640C - Manual (Page 69)

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Sonar Page menu (left) with Depth Cursor command selected. Sonar
chart (right) with the depth cursor active. The school of fish is 31.91
feet deep.
The cursor can be moved to any location on the screen, letting you pin-
point the depth of a target.
1. From the Sonar Page, press MENU |
↓ to
D
EPTH
C
URSOR
| ENT .
2. The depth cursor appears. Press
↓ to lower the cursor line; press ↑ to
raise the cursor line.
3. To clear the depth cursor, press EXIT .
Depth Range - Automatic
When turned on for the first time, the bottom signal is automatically
placed in the lower half of the screen. This is called Auto Ranging and
is part of the units automatic function. However, depending upon the
bottom depth and the current range, you can change the range to a dif-
ferent depth. To do this:
1. From the Sonar Page, press MENU |
↓ to
D
EPTH
R
ANGE
| ENT .
Cursor line
Depth box