Viewing history
Whenever the cursor is shown on the Echosounder panel, the scroll bar is shown at the top
of the panel. The scroll bar shows the image you are currently viewing in relation to the total
Echosounder image history stored.
If the scroll bar is on the far right side, it indicates that you are viewing the latest soundings. If
you position the cursor to the left side of the screen, the history bar starts scrolling towards
the left, and the automatic scrolling as new soundings are received is turned off.
You can view echosounder history by panning the image.
To resume normal scrolling, select the Clear cursor menu option.
Setting up the image
Use the Echosounder menu options to set up the image. When the cursor is active, some
options on the Echosounder menu are replaced with cursor mode features. Select Clear
cursor to return to the normal Echosounder menu.
The range
The range setting determines the water depth that is visible on the screen.
Frequency
The unit supports several transducer frequencies. Available frequencies depend on the
transducer model that is connected.
You can view two frequencies at the same time by selecting dual Echosounder panels from
the Home page.
Frequency is the ‘tone’ the transducer transmits. Transducers are designed to operate on
different frequencies as the various frequencies have different qualities.
• A low frequency, for example 50 kHz, will go deep. It generates a wide cone but is
somewhat more sensitive to noise. It is good for bottom discrimination and wide area
search.
• A high frequency, for example 200 kHz, offers higher discrimination and is less sensitive to
noise. It is good for separating targets and for higher speed vessels.
Color and gain settings
Gain and Color control images are located in the left side of the Echosounder panel. You
activate the control by tapping the image or by pressing the rotary knob on a remote
controller. Active control expands and displays its name in full. You can then adjust the value
by using the slide bar or by turning the rotary knob on the remote controller.
You can also adjust the image settings from the Echosounder menu.
Echosounder | NSO evo2 Operator Manual
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