Garmin Fishfinder 320C, Owner'S Manual And Reference Manual

Page 1: ...owner s manual and reference guide Fishfinder 320C 320C Cover indd 1 3 11 2003 11 33 53 AM ...

Page 2: ...edium to be viewed and to print one copy of this manual or any revision hereto provided that such electronic or printed copy of this manual or revision must contain the complete text of this copyright notice and provided further that any unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited Information in this manual is subject to change without notice G...

Page 3: ...reached Monday Friday 8am to 5pm Central Standard Time By phone at 1 800 800 1020 or 913 397 8200 Online at http www garmin com contactUs techSupport jsp Check the Garmin Web Site www garmin com for links to Product Support and Product FAQ s Enjoy your new Fishfinder 320C and once again thank you for choosing Garmin Product Registration Help us better support you by completing our on line registrat...

Page 4: ...armin retains the exclusive right to repair or replace the unit or software or offer a full refund of the purchase price at its sole discretion SUCH REMEDY SHALL BE YOUR SOLE AND EXCLUSIVE REMEDY FOR ANY BREACH OF WARRANTY To obtain warranty service contact your local Garmin authorized dealer Or call Garmin Customer Ser vice at one of the numbers shown below for shipping instructions and an RMA tr...

Page 5: ... organization and code of the Software are valuable trade secrets of Garmin and that the Software in source code form remains a valuable trade secret of Garmin You agree not to decompile disassemble modify reverse assemble reverse engineer or reduce to human readable form the Software of any part thereof or create any derivative works based on the Software You agree not to export or re export the ...

Page 6: ... Optional Package 010 00289 01 includes Standard Package plus Dual Frequency 200 50kHz 10 40 Plastic Transom Mount Transducer with Depth and Temp Separate Speed Sensor Optional Package 010 00289 02 includes Standard Package plus Single Frequency 200kHz 20 Plastic Transom Mount Transducer with Depth and Temp Separate Speed Sensor Optional Accessories US A C PC Adapter EURO A C PC Adapter Cigarette ...

Page 7: ...ttom resolution and a smaller dead zone A variety of optional transducers are available from your local dealer or direct from Garmin 200 50kHz 12 45 plastic transom mount depth temp 200 50kHz 12 45 plastic transom mount depth temp speed 200 50kHz 12 45 bronze thru hull mount depth 200 50kHz 12 45 bronze thru hull mount depth temp speed 200 50kHz 12 45 bronze thru hull mount long stem depth temp sp...

Page 8: ...Color Bar 16 Temperature Graph 16 Temp Tab 16 Temperature Scale 16 Time Duration 16 Reset Auto Scale 16 Alarms Tab 17 Fish Alarm 17 Shallow Deep Water Alarms 17 Drift Alarm 17 Water Temperature Alarm 17 Battery Alarm 17 Timer Alarm 17 System Tab 18 Beeper 18 Language 18 Simulator 18 NMEA Input Output 18 Factory Settings 18 Software Version 18 Reset Odometer 18 Units Tab 18 Depth 18 Temperature 18 ...

Page 9: ...e heavy enough to support the unit and protect it from excessive vibration and shock NOTE The temperature range for the Fishfinder 320C is 5 F to 158 F 15 C to 70 C Extended exposure to temperatures exceeding this range in storage or operating condi tions may cause failure of the LCD screen This type of failure and related consequences are NOT covered by the manufacturer s limited warranty To surfa...

Page 10: ...Saw cut the mounting surface along the inside of the dashed line indicated on the template Be very careful when cutting this hole there is only a small amount of clearance between the unit and the Mounting Holes It may be prudent to cut slightly inside the indicated line and then sand or file the panel as needed to obtain the best fit 6 Install the four Mounting Studs into unit by screwing the short...

Page 11: ...lder Terminal 3 Install the Black wire on the Negative Fuse Holder Terminal 4 Install a 2 amp fuse in the Fuse Holder The Fishfinder 320C can be connected to another piece of NMEA compatible electronic equipment such as a Garmin GPS Global Positioning System If equipped with a capable transducer the Fishfinder 320C can send depth temperature and speed information It can also mark a location pg 13 th...

Page 12: ... waypoints The Fishfinder 320C does not store the actual waypoint Only the receiving device if capable will store the waypoint Note During a typical installation only the Red and Black wires are used The other wires do not have to be connected for normal operation of the unit Complete information concern ing National Marine Electronics Association NMEA format and sentences is available for purchase...

Page 13: ...transducer directly in the path of the prop The transducer can cause cavitation that may degrade the boat s performance and damage the prop Make sure that the transducer is below water level when the boat is on plane at high speed Apply marine sealant to all screw threads to prevent water from seeping into the transom Mount the transducer cable cover well above the waterline Transducer should exte...

Page 14: ...ny air bubbles laminates fillers or dead air space The location needs to be in an area of clean water at all speeds Do not place the transducer over any strakes or behind any obstruction on the hull that would create turbulence at speed NOTE Many modern hulls have a prelocated pocket for shoot thru hull transducer installation If you are unsure if your hull is equipped with a pre located pocket con...

Page 15: ...iately start showing the bottom Verify that the unit is not in the simulator mode If the unit is in the simulator mode make sure that the transducer is connected properly to the unit When you place your boat in the water CHECK FOR LEAKS around any screw holes that have been added below the water line DO NOT leave your boat in the water for an extended period of time without checking for leaks Begi...

Page 16: ...ect the desired setting ENTER Key selects a highlighted menu option When entering data it allows you to initiate entry and then accept the selected value s When paused in Pointer mode will create a waypoint at the Pointer posi tion if equipped with compatible NMEA GPS POWER BACKLIGHT Key press and hold to turn the unit on and off While the unit is on pressing and releasing will display the backlig...

Page 17: ...or a combination of these options see pg 11 For example you may choose to show dual frequency at a 2X zoom Dual 2X on one half and normal range dual frequency Dual returns on the other half The current display mode will be displayed at the bottom of each sonar display Sonar returns will show as red strongest then oranges strong yellows medium greens weaker and blues weakest The Fish Symbols option...

Page 18: ...e scale to show where the of Normal or default setting would appear Once set to Normal the setting bar will be replaced by the word Normal 3 Press ENTER or QUIT to accept the new setting and return to the sonar graph For users accustomed to other Garmin sonar products the current adjustment will appear in the upper left corner For fast adjustment from the Sonar Page press LEFT or RIGHT on the ARRO...

Page 19: ...y If the display is 2X or 4X split only the zoomed portion on the left side of the display will be affected by the change If the display is Bottom Split or Bottom Lock Span will adjust how far off the bottom the unit will display data Gain allows you to control the sensitivity of the unit s receiver This provides some flexibility in what is seen on the display To see more detail increase the receiv...

Page 20: ... the more likely the unit is to NOT show fish or structure Scroll adjusts the rate that the graph scrolls from right to left If you are sitting still or the graph is moving too fast slowing the scroll rate or pausing it can be beneficial Auto will automatically adjust the scroll rate according to the boat s speed See also Automatic Scroll Speed Limit on page 19 Size Split enables width adjustment of...

Page 21: ... stop Pointer mode 1 From the Sonar Page hold PAUSE for two seconds Use the ARROW KEYPAD to move the cursor around on the screen Press PAUSE again or QUIT to quit or 1 From a paused Sonar Page hold PAUSE for two seconds Press PAUSE or QUIT once to return to the paused display or twice to unpause and resume normal scrolling To mark an underwater waypoint 1 From the Sonar Page hold PAUSE to enter Po...

Page 22: ...p screen The left side of the screen will show the current Advanced display layout The right side will show available configuration options You may either directly edit an existing field on the left or choose the type of data you wish to add from the list on the right Highlighted items will appear with a black background and the associated field or data type will be outlined in yellow and red To modi...

Page 23: ...of the scrolling graph display and contains the unit settings that should not require frequent change The following settings are available Fish Symbols allows you to determine how the graph will display underwater targets and back ground information If Fish Symbols are set to Off the unit will display all of the available informa tion about the underwater environment If a fish symbol is selected th...

Page 24: ...l when using Fish Symbols Color Bar shows a gradient scale of the current Target Level setting see page 11 Temperature Graph toggles On or Off the display of a temperature graph on the Sonar Page Temp Temperature Tab Displays the water temperature log if equipped with a temperature transducer sensor The graph reads from right to left so that the most recent temperature measured is displayed on the...

Page 25: ... temperature either above below inside or outside the specified values System Battery sets an alarm to sound when the battery is reaching a critical state of discharge Timer allows you to choose between a Count Dn Down or Count Up timer You may specify a duration for the Count Dn Down Stop or Reset the timer To set an alarm 1 Use the ARROW KEYPAD to highlight desired submenu tab of the Alarms Tab 2...

Page 26: ...ginal factory default values for the entire unit Software Version displays the unit s software version and electronic serial number Reset Odometer this will only appear if you are using a speed capable transducer sensor Resets the odometer field back to zero Units Tab Defines units of measure The following settings are available Depth lets you select the desired units of measure for depth in Feet ft...

Page 27: ...lly adjusts the Scroll rate see pg 12 to the speed of your vessel if equipped with a speed sensor or receiving GPS NMEA input Entering your maximum cruising speed will produce a 100 scroll rate when you reach that speed One half of that speed will produce a 50 scroll rate etc Keel Offset allows you to offset the surface reading for the depth of a keel This makes it possible to measure depth from t...

Page 28: ...eed you will see a Boat Is Not Moving Fast Enough To Calibrate message at the bottom of the display Check that the speed sensor wheel is moving or safely increase boat speed If there is a problem with the speed sensor unit or if a speed senor is not installed a Water Speed Sensor Is Not Working message will appear at the bottom of the display Check connections of speed sensor cables Time Tab Displ...

Page 29: ...a is displayed on the graph in the order that it is returned first returned first on the graph The diagram below demonstrates this by showing an underwa ter scene as it would be displayed on the graph Generally speaking if the only thing between the transducer and the bottom is water the first strong return will come from the bottom directly below the transducer The first strong return sets the bottom...

Page 30: ...imately covers the area of a 6 foot diameter circle at a 30 foot depth When using the Fishfinder 320C in Dual frequency mode the unit transmits both 50kHz and 200kHz signals at the same time The Dual frequency capability of the Fishfinder 320C allows the user to have a large coverage area and still retain good bottom resolution When in Dual frequency mode the unit uses the narrow cone angle 200kHz...

Page 31: ...side by side as shown in Example 1 However when we look at Example 2 we see that the fish can be several feet from the tree It is important to remember that the Fishfinder cannot determine where in the coverage area the tree or fish are only that the returns were received at the indicated depths in the same time frame Branches Fish Remember that the Fishfinder displays a 2 D picture of the underwater ...

Page 32: ...le to the right shows the bottom return with and without the whiteline activated Thermoclines One of the unique features offered by Garmin is See Thru technology See Thru technology allows the Fishfinder 320C to see through thermoclines and helps locate fish where they live and fish love thermoclines A rough definition of a thermocline is a break in water where the water temperature changes faster tha...

Page 33: ...r 320C is constructed of high quality materials and does not require user maintenance other than cleaning Clean the unit using a cloth dampened with a mild detergent solution and then wipe dry Avoid chemical cleaners and solvents that may damage plastic components WARNING The Fishfinder 320C lens is coated with a special anti reflective coating which is very sensitive to skin oils waxes and abrasive...

Page 34: ...his alarm does not display a message banner Running Simulator Unit is in Simulator Mode This message will reappear after 2 minutes of inactivity If the unit does not detect a transducer attached it will automatically enter Simulator Mode Shallow Water Alarm Shallow Water Alarm depth has been reached Sonar Failed Unit Needs Repair Internal problem with unit Contact your dealer or Garmin Product Sup...

Page 35: ...p Water Alarm Deep Water Alarm 17 17 Defaults Defaults 12 12 18 18 Depth Depth 9 9 10 10 13 13 15 15 18 18 Depth Line Depth Line 12 12 Depth Number Depth Number 16 16 19 19 Depth Units Depth Units 18 18 Distance Units Distance Units 18 18 Drift Alarm Drift Alarm 17 17 E E ENTER Key ENTER Key 8 8 F F Factory Settings Factory Settings 18 18 Fish Alarm Fish Alarm 17 17 Fish Symbols Fish Symbols 9 9 1...

Page 36: ... Storage Storage 25 25 System Tab System Tab 18 18 T T Table of Contents Table of Contents vi vi Target Level Target Level 11 11 Temperature Temperature 16 16 Temperature Graph Temperature Graph 16 16 Temperature Tab Temperature Tab 16 16 Temperature Units Temperature Units 18 18 Testing the Installation Testing the Installation 7 7 Thermoclines Thermoclines 24 24 Time Time 20 20 Timer Timer 17 17...

Page 37: ...320C Cover indd 3 3 11 2003 11 34 22 AM ...

Page 38: ...drangle Abbey Park Industrial Estate Romsey SO51 9DL U K Garmin Corporation No 68 Jangshu 2nd Road Shijr Taipei County Taiwan www garmin com Part Number 190 00261 00 Rev A For the latest free software updates excluding map data throughout the life of your Garmin products visit the Garmin web site at www garmin com 320C Cover indd 4 3 11 2003 11 34 22 AM ...