Setting Up The Image; Advanced Options - Simrad NSO evo3S MPU Operator's Manual

Setting up the image

Source
Ú Note:
Available only if multiple sources with the same capability are available.
Used to specify the source for the image in the active panel.
You can display different sources simultaneously, using a multi-panel page configuration.
Menu options for each panel are independent.
Ú Note:
Using transducers at the same frequency can cause interference.
For source setup information, refer to the NSO evo3S MPU Installation Manual.
Range
The range setting determines the distance out to the left and right of the center.
Preset range levels
Select a preset range level manually from the menu.
Auto range
In auto range, the system automatically displays the whole range from the water surface to
the bottom.
Auto is the preferred setting for fish finding.
Select the range option and then the auto option in the menu.
Frequencies
Two frequencies are supported. 800 kHz provides the sharpest image without sacrificing
range. While 455 kHz can be used in deeper waters, or for expanded range capabilities.
Contrast
Determines the brightness ratio between light and dark areas of the screen.
Ú Note:
We recommend that you use the auto contrast option.
Palettes
Used for selecting the image's color palette.

Advanced options

TVG
Wave action and boat wakes can cause onscreen clutter near the surface. The TVG (Time
Variable Gain) option reduces surface clutter by decreasing the sensitivity of the receiver near
the surface.
Flipping the image left/right
If required, flips the left/right side of the image to match the direction of the transducer
installation.
Vertical enhancement
This option stretches the data so that the differences between depths are greater on the
panel, which help you to see the changes in depth in relatively shallow areas.
Target sensitivity
This setting adjusts how many and what intensity points are included in the water column.
Turn it down to see less noise or things you don't want to see, and turn it up to see more
information.
3D Sonar | NSO evo3S MPU Operator Manual
83