NorthStar Navigation Echo Sounder 491 User Manual
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491 Echo Sounder Operations Manual
Figure 5: 957/958 echo sounder menu structure
STAR key
Auto
Picture
Frequency
Zoom
Depth
More
ECHO
SCREEN
Gain
Clutter
Noise Limiter
Hue
Signal level
Return
Shift
Range
Bottom box
Return
Alarms
Advance Speed
Video
A-Scope
Data
Return
Fish alarm
Bottom alarm
Temp alarm
Return
Temp box
Temp graph
Bottom box
Speed
Return
Picture settings
Depth settings
More settings
Alarm settings
Data on-screen
Video on
Return
Video setup