62 GPSMAP 400/500 Series Owner’s Manual
Using Sonar
Split Zoom—displays the Split Zoom screen (page 58).
Noise Reject (available only when Gain is set to Manual)—reduces
on-screen visual clutter (usually from electrical sources) on the
screen. Select the top slider bar to manually adjust the value of noise
rejection. Manually adjusting the amount of noise that is rejected
helps ne-tune the sonar to show the most detail with the least noise.
When Frequency is set to Dual (and Gain is set to Manual), you
can individually adjust noise rejection for each frequency.
•
To Next Page
Loading...
