Raymarine C140w User Reference Handbook page 168

Dual operation
For dual frequency operation you can set Frequency 2 for the
required preset operating modes.
Setting the fishfinder frequency
With the configure presets frequencies options you can:
• Specify one or two frequencies for each of the four presets.
• Edit preset names.
• Reset presets to factory defaults.
1. From the main fishfinder screen, press the MENU button.
2. Select Fishfinder Setup from the list of options.
3. Select Configure Preset Frequencies from the list of options.
4. Make the required changes for each preset mode (P1 to P4)
Changing fishfinder preset names
1. From the main fishfinder screen, press the MENU button.
2. Select Fishfinder Setup from the list of options.
3. Select Configure Preset Frequencies from the list of options.
4. Use the trackpad to select the required preset.
5. Press the EDIT NAME softkey
6. Use the rotary control and trackpad to change the name
7. Press OK when complete.
Transducer and DSM settings
Selecting the DSM and transducer settings
From the main fishfinder screen:
1. Press the MENU button.
2. Select Fishfinder Setup from the list of options.
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3. Select from the list of menu options:
• Transducer Settings
• DSM Settings
Fishfinder DSM Setup Menu Options
Nearby vessels equipped with a fishfinder, or certain physical
conditions (like hard seabeds), can affect the DSM. Its setup menus
enable you to change settings to allow for this.
Menu Item Description
DSM Reset Restore all settings
on the DSM to
factory default. When
performing a DSM
Reset, it is normal to
briefly loose connection
with the DSM.
Trip Counter Reset Resets the Trip Counter
of the DSM.
Removes spikes
SONAR Interference
Rejection caused by other
fishfinder-equipped
vessels.
2nd Echo Interference Adjusts the ping rate
Rejection in small increments,
according to the 2nd
echo level. This results
in better sensitivity of the
image.
Options
Yes, No
Yes, No
Auto, Low, Medium,
High
Off, Low, High
C-Series Widescreen user reference