When using the zoom feature (which also splits the screen into halves), both sides of the screen always display the same frequency.
Zooming in and out
Choosing the zoom scale
On the ECHO screen, the echo sounder’s zoom feature expands a portion of the echoes. You can examine closely any part of the water column, to determine the composition of the bottom or look at the echoes of fish, rocks, or wrecks. When fishing, the zoom function is useful for showing a detailed view of any echoes below the vessel.
Press IN to zoom in and increase the magnification of the echoes you see below the top edge of the marker. Press OUT to zoom out and increase the amount of water seen.
You can choose from any of six depth scales for the magnified echoes. These scales cover the same depths regardless of the scale of the original echoes.
The available scales are: 15’, 30’, 60’, 120’, 240’ and 480’ when using units of “feet.” Similar scales are available for the other depth units.
NOTE:
When zoom is in use, only a single frequency is displayed. Unzoomed echoes are on the right, and the same frequency is shown magnified on the left. Whatever frequency was previously shown on the left is replaced by a magnified view of the right side.
NOTE:
You cannot zoom out to a scale that shows more water than the original picture. For example, if the original picture is set to a scale of 50’, the only zoom scales available will be 15’ and 30’.
Choosing a zoom mode
Press ZOOM on the ECHO screen to cycle through the four zoom modes (and choose the one you want):
•bottom zoom
•bottom lock
•bottom lock/center
491 Echo Sounder Operations Manual | Page 19 |
