Raymarine H6, Owner'S Manual, Page: 94 / 192

80 Raymarine H6 - Owner’s Manual
To adjust the range:
You can change the range by clicking the softkeys in the tool box.
Click this button to move the range OUT and see a larger
area.
Click this button to move the range IN and see a smaller
area.
Operating frequency
The sonar uses dual frequency - 50 kHz and 200 kHz - to provide the optimum
image at different depths and can be used in either auto or manual modes. The
frequency setting is indicated in the status bar.
In Auto frequency the sonar automatically selects the appropriate frequency,
based on the current display range. As the depth increases, the sonar switches
from 200 kHz to 50 kHz at 250 ft. (80m). As the depth decreases, the sonar
switches from 50 kHz to 200 kHz at 150 ft. (50m). This affects all sonar widows.
The Auto frequency setting is useful for automatically searching for the bottom.
In Manual frequency the following options are available:
• Single frequency mode.
In which you select the sonar frequency that is displayed in all sonar pages.
• Dual frequency mode.
In which the transducer operates in both 50 kHz and 200 kHz frequencies at
the same time and you select the frequency that is displayed in each page.
This mode allows you to view both frequencies simultaneously using multi-
ple sonar pages.
50 kHz frequency
When using this frequency, the transducer scans a wide area. The signal
penetrates water well, so is good for use in deep water.
200 kHz frequency
When using this frequency, the transducer scans a narrower area, but produces a
more detailed view. The signal is good for finding fish that are near the bottom or
close together and is better for use in shallow water.
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