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Fishfinder 350C Owner’s Manual 

 9

This is the temperature offset. Enter this value as a positive number if the 

sensor connected to the fishfinder measures the water temperature as being 

colder than it actually is. Enter this value as a negative number if the sensor 

connected to the fishfinder measures the water temperature as being warmer 

than it actually is.

Select 

MENU

 > 

Setup

 > 

Calibration

 > 

Temperature Offset

.

Use   and   to select positive (+) or negative (-), based on the value 

calculated in step 3.

Enter the value of the alarm setting.

Select 

ENTER

.

Check the temperature offset value to ensure you have entered the correct 

value.

Calibrating the Water Speed Sensor

Select 

MENU

 > 

Setup

 > 

Calibration

 > 

Calibrate Water Speed

.

Follow the on-screen instructions.

NOTE:

 Enter the top speed as measured by an external source, such as a GPS. Do 

not enter the water speed value shown on the calibrate water speed page.

Restoring the Original Factory Settings

NOTE:

 This procedure deletes all settings information you have entered.

Select 

MENU

 > 

Setup

 > 

System 

System Information

 > 

Factory Settings

 > 

Yes

.

Appendix

Specifications

Specification

Measurement

Temperature Range

From 5°F to 131°F (from -15°C to 55°C)

Power Source Voltage Range

8–28 Vdc

Rated Current

1 A

Fuse

AGC/3AG - 3.0 A

Freshwater Depth*

1500 ft. (457 m)

Saltwater Depth*

600 ft. (183 m)

* Depth capacity is dependent on water salinity, bottom type, and other water 

conditions.
The included transducer has beam angles of 15 and 45 degrees at 3 dB. However, 

when this transducer is used with the fishfinder device, it can detect the smallest 

signals up to 60 and 120 degrees. Shallow and deep water performance is 

maximized when this transducer and this fishfinder are used together because the 

fishfinder shows more fish in shallower water, and it shows more details in deeper 

water, such as structures and water bottom contours.

Cleaning the Outer Casing

NOTICE

Avoid chemical cleaners and solvents that can damage plastic components.

Clean the outer casing (not the screen) of the device using a cloth dampened 

with a mild detergent solution.

Wipe the device dry.

190-01440-00_0B.indd   9

3/21/2012   1:00:09 PM

Summary of Contents for 350C

Page 1: ...Fishfinder 350C Owner s Manual 1 Fishfinder 350C owner s manual 190 01440 00_0B indd 1 3 21 2012 1 00 05 PM...

Page 2: ...up and down and to highlight options Press SPAN to adjust the height of the water shown on the sonar view when you zoom Press SPAN twice to open the zoom menu which allows you to automatically adjust...

Page 3: ...left Turning On the A Scope The A Scope is a vertical flasher along the right side of the full screen sonar view This feature expands the most recently received sonar data so that it is easier to see...

Page 4: ...shows 200 kHz frequency sonar data Select Split Frequency NOTE You cannot press the keys twice to open the shortcut menu on the split frequency sonar view Opening the Log Page You can view a log of d...

Page 5: ...Automatically 1 Press GAIN twice TIP You can also select Menu Gain 2 Select an option To display the sonar view with higher sensitivity and to show weaker signals and more noise select Auto High To di...

Page 6: ...d Sonar Viewing the Sonar History 1 Select MENU Pause Rewind Sonar 2 Select an option To scroll the sonar view and move the vertical line select or To adjust the horizontal depth line select or Resumi...

Page 7: ...ection settings must be applied to the split frequency view separately from other sonar views Surface Noise Sets whether the device displays sonar returns near the surface of the water Hiding surface...

Page 8: ...option based on the location of the transducer and depth reading type If the transducer is installed at the water line and you want the depth reading to reflect the depth below the keel keel clearanc...

Page 9: ...eletes all settings information you have entered Select MENU Setup System System Information Factory Settings Yes Appendix Specifications Specification Measurement Temperature Range From 5 F to 131 F...

Page 10: ...de secrets of Garmin and or its third party providers and that the Software in source code form remains a valuable trade secret of Garmin and or its third party providers You agree not to decompile di...

Page 11: ...tact your local Garmin authorized dealer or call Garmin Product Support for shipping instructions and an RMA tracking number Securely pack the device and a copy of the original sales receipt which is...

Page 12: ...ansas 66062 USA Garmin Europe Ltd Liberty House Hounsdown Business Park Southampton Hampshire SO40 9LR UK Garmin Corporation No 68 Zhangshu 2nd Road Xizhi Dist New Taipei City 221 Taiwan R O C www gar...

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