Lowrance electronic M68C IceMachine - Manual (Page 62)

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Sonar Features menu with Fish I.D. Depths selected. When the check
box to the left is checked, the feature is on. At right, Sonar Page show-
ing Fish I.D. symbols and FishTrack depths turned on.
HyperScroll

See the entry on Ping Speed, which controls the HyperScroll feature.
Noise Rejection
See the entry on Advanced Signal Processing in this section.
Overlay Data
To change the digital data shown on top of the sonar page:
1. Press
MENU |
↓ to
O
VERLAY
D
ATA
| ENT .
2. Press
↓ or ↑ to select Data Type|
ENT.
Overlay Data command on the Sonar Menu, at left. Overlay Data
Shown selection menu, right. In this example, we scrolled down the
data list to highlight "Ground Speed."
When selected, a check mark appears beside the data type. (If you wish,
you may now use
↓ or ↑ to select other Data Types for display.)
Symbols with
FishTrack depths