Swivel mounting bracket to adjust
the angle of the display unit
The gimbal mount allows the display unit to swivel aroundwhen desktop mounted. You can adjust the angle of the display
to get the optimum viewing angle.

5.7" COLOR LCD FISH FINDERSPECIFICATIONS OF FCV-688

5.7" color LCD
87.1 (W) x 116.2 (H) mm
640 x 480 (VGA)
Single frequency (50 or 200 kHz),
Dual-frequency, Zoom, Nav data,
A-scope, Marker zoom, Bottom zoom,
Bottom-lock, Bottom Discrimination,
ACCU-FISH™
2-1200 m*

DISPLAY UNIT
Bracket Mount 1.3 kg 2.9 lb
4-ø6The FCV-688 provides valuable information
to help you locate rich fishing grounds
and boost your catch!

122 4.8"

R103*m, ft, fm, HR, pb can be selected in the menu

431.7"

Alarm60

132 5.2"

˚60

˚106 4.2"
54 2.1"170 6.7"

˚

90

207 8.2"

170 6.7"

Bottom, Fish (Normal), ACCU-FISH™,Fish (B/L), Bottom Discrimination, Fish
Level, Temperature, Speed, Arrival andBattery
Language
CV-688C: Chinese, English
CV-688E: English, French, Spanish,Thai, Vietnamese, Indonesian, BurmeseRange Phasing
up to 1200 m
Expansion Range
Bottom-lock expansion: 2-10 m
Sectional expansion: 2-1200 m
Picture Advance Speed 8 steps: stop, 1/16, 1/8, 1/4, 1/2,1, 2, 4
Pulselength & PRR
0.1-3.0 ms, Max 3,000 pulse/min
Interface(Input) BWC, GGA, GLL, GNS, HDG,HDT, MDA, MTW, MWV, RMA, RMB,RMC, VHW, VTG, XTE, ZDA(Output) DBS, DBT, DPT, MTW*, RMB*,
VHW*, TLL* by key operation

Model

219 8.6"

Basic Range

Transducers (Specify when ordering)520-5PSD (Plastic thru-hull), 520-5MSD (Bronze thru-hull),
525STID-MSD (Bronze thru-hull with a speed/temp sensor),
525STID-PWD (Plastic transom with a speed/temp sensor)

50 and 200 kHz
600 W

622.4"

GENERAL
Frequency
Output PowerDISPLAY
Display Type
Effective Display Area
Pixel Number
Display

INTERCONNECTION DIAGRAM* External data required.

GPSNavigator

ENVIRONMENT
Temperature-15°C to +55°C
Waterproofing
IP55
POWER SUPPLY
12-24 VDC, 13W
EQUIPMENT LIST
Standard
1. Display Unit
CV-688E/688C (for Chinese)
2. Installation Materials and Standard Spare PartsOption
1. Speed/Temperature Sensor
ST950 (Thru-hull, bronze/plastic)
2. Connector Kit for Connection of Speed& Temperature Sensor or Temperature Sensor
3. NMEA+Power Cable

Beware of similar products

NMEA0183

12/24 VDC

Transducer

FURUNO DANMARK A/SFURUNO FRANCE S.A.S.

FURUNO SHANGHAI CO., LTD.

FURUNO U.S.A., INC.

FURUNO SVERIGE AB

FURUNO ESPAÑA S.A.

FURUNO CHINA CO., LTD.

FURUNO PANAMA S.A.

FURUNO FINLAND OYFURUNO ITALIA S.R.L.

FURUNO SINGAPOREFURUNO (UK) LIMITEDFURUNO POLSKA Sp. Z o.o.

FURUNO HELLAS S.A.

FURUNO NORGE A/SFURUNO DEUTSCHLAND GmbHFURUNO (CYPRUS) LTD

U.S.A. | www.furunousa.com

Republic of Panama | www.furuno.com.pa
U.K. | www.furuno.co.uk

Norway | www.furuno.noOption

All brand and product names are registered trademarks,
trademarks or service marks of their respective holders.

FURUNO ELECTRIC CO., LTD.
Japan | www.furuno.com

GPSPlotter

Denmark | www.furuno.dk
Sweden | www.furuno.se
Finland | www.furuno.fi

Poland | www.furuno.pl

Germany | www.furuno.deFrance | www.furuno.fr
Spain | www.furuno.es
Italy | www.furuno.it

Greece | www.furuno.gr

Cyprus | www.furuno.com.cy

China | www.furuno.com/cn

FURUNO ELECTRIC (MALAYSIA)
SND. BHD.
Malaysia | www.furuno.my

Hong Kong | www.furuno.com/cn
Singapore | www.furuno.sg

Non-CEMarking

PT FURUNO ELECTRIC INDONESIA

Indonesia | www.furuno.id

C-2302LB
Catalogue No. CA000002007

Auto Tuning(Sensitivity)

FURUNO Digital
Filter

BottomDiscrimination

ACCU-FISH

www.furuno.com

The FCV-688 knows fish size and bottom structure under your boat!
▲

Equipped with Furuno’s latest technology: the Bottom Discrimination Function - Analyze bottom structure*Provides an at-a-glance recognition of bottom form with four types of graphical displays (Rocks/Gravel/Sand/Mud)when connected to required thru-hull or transom mount transducer.

Bottom Discrimination feature* Thru-hull or transom transducer mount required

The FCV-688’s Bottom Discrimination feature enables the fish finder to indicate if a major
component of the bottom is mud, sand, gravel or rocks.
The Bottom Discrimination feature provides you with valuable information to locate richfishing grounds, while boosting your catch of the day.

•▲ ▲ACCU-FISH - A unique fish size analyzer based on the latest digital technology
White Line feature - Discriminate fish lying near the bottomTM••

The top edge of the sea floor is displayed in white to clearly show structures.
This feature helps to discriminate bottom fish distinctly.

▲ ▲

Rocks
GravelRocks
GravelSandMud▲

Configurable Alarm function (depth, fish echoes, etc.)
Post-processing Gain Control applied to all echoes
displayed on the screen
Share and display information on a chart plotter*
Furuno’s TLL (Target Lat/Lon) output allows you to interface the FCV-688
with your chart plotter so that you can mark fishing spots with various
information (L/L, Depth, Water Temp, Fish size, Bottom).

Sand
Mud

Probability mode

Graphic mode

The probability display mode shows the most probable bottom
composition in graph form.

The standard graphic display mode shows the most probable bottom
composition by graphic or four colors.

•Please keep the following in mind when using the Bottom Discrimination Sounder:▲

1) Use at a depth of 5 m - 100 m.

5) Enter the ship’s draft value.

* Required connection to chart plotter.

2) Use transducer in transom mount or thru-hull mount.

6) Use a ship speed of 10 kn or less.

Fast transmission rate of 3,000 PRR (Pulse Repetition Rate)
per minute (at 5 m depth range)

3) Set the transducer parallel to the bottom of the craft.

7) In some instances, bottom component indicated on the FCV-688 may differ from its actual
bottom structure. Please carefully read the operation manual prior to utilizing this feature.

4) To show a consistent display of the actual bottom, set therange display of the fish finder screen to “auto”.

White Line function distinguishes fish from bottom
The white line function helps you distinguish bottom fish from thebottom by changing the strongest signal color to white. This function is
not only useful discriminating bottom fish but is also valuable for judging
fish school density. The setting range is 0%-100%, in intervals of 1%.
The higher the value the thicker the line.

Field Test
“ACCU-FISH TM ” identifies individual fish with size and fish mark function

Screenshot from fish reef in lake:
Many fish marks appears on the screen in the thick weed
bed. The white line function helps distinguish bottom andweed from the actual fish.

Recognizes individual or multiple fish instantaneously
ACCU-FISH TM is a revolutionary fish size assessment function of the FCV-688. In order to assess
individual fish size, the echo strength from the fish needs to be computed and turned into fish size
display on the screen. It can detect the fish size of 10 to 199 cm, in the depth of 2 to 100 m.

Post-Processing Gain Control

Displaying fish marks
The fish mark can be utilized to display on individual fish echoes
when detected. It helps beginners to identify the fish targets on thedisplay for a more fun fishing experience. Fish mark is selectablefrom two types of fish symbol, circle and square. The fish symbol,
displayed in two different sizes (Large: over 50 cm, Small: 10 to 49cm), is a great help for anglers to identify fish targets. Circle andsquare indentify targets without hiding fish echo.

StripedCircleSolidSquare

Gain: 4Displaying fish size or fish depth
Activating the ACCU-FISH from the menu, FCV-688 displays fish size on the individual fish echo.
When the ACCU-FISH TM is used concurrently with fish marks, it greatly helps anglers to identify fishtargets on the display. You may also select and display the target depth instead of fish size, whichhelps to see how far the fish is from the boat.
TMIn some instances, fish size indicated on the FCV-688 may differ from its actual size.
Please carefully read the operation manual prior to utilizing this feature.

Gain: 4

With conventional gain controls, changes are made for newechoes only when a change in the setting is applied. With theFCV-688’s Post-Processing Gain Control, changes in the gain
setting are applied to new echoes as well as all of the echoes
already on the screen. Because the changes are applied toboth new and existing returns, you will be able to quickly andeasily find the right gain setting for your conditions.

Gain: 2Fish Alarm function
Circles or squares with fish sizes are displayedon fish echoes. When in dual frequenciesmode, you can set the mark displayed on bothor either frequency screen.

When fish echoes come in the area which you set above the bottom, beeps sound and the alarm icon flashes at
the top right corner of the screen. Furthermore, an integrated alarm setting is also available that can be set by
every and each condition, including water depth, target depth, water temp, bottom component, etc.

Gain: 2

Conventional gain settingThe FCV-688 knows fish size and bottom structure under your boat!
▲

Equipped with Furuno’s latest technology: the Bottom Discrimination Function - Analyze bottom structure*
Provides an at-a-glance recognition of bottom form with four types of graphical displays (Rocks/Gravel/Sand/Mud)when connected to required thru-hull or transom mount transducer.

Bottom Discrimination feature* Thru-hull or transom transducer mount required

The FCV-688’s Bottom Discrimination feature enables the fish finder to indicate if a major
component of the bottom is mud, sand, gravel or rocks.
The Bottom Discrimination feature provides you with valuable information to locate richfishing grounds, while boosting your catch of the day.

•▲ ▲ACCU-FISH - A unique fish size analyzer based on the latest digital technology
White Line feature - Discriminate fish lying near the bottom
TM••

The top edge of the sea floor is displayed in white to clearly show structures.
This feature helps to discriminate bottom fish distinctly.

▲ ▲

Rocks
GravelRocks
GravelSandMud▲

Configurable Alarm function (depth, fish echoes, etc.)
Post-processing Gain Control applied to all echoes
displayed on the screen
Share and display information on a chart plotter*
Furuno’s TLL (Target Lat/Lon) output allows you to interface the FCV-688
with your chart plotter so that you can mark fishing spots with various
information (L/L, Depth, Water Temp, Fish size, Bottom).

SandMud

Probability mode

Graphic mode

The probability display mode shows the most probable bottom
composition in graph form.

The standard graphic display mode shows the most probable bottom
composition by graphic or four colors.

•Please keep the following in mind when using the Bottom Discrimination Sounder:▲

1) Use at a depth of 5 m - 100 m.

5) Enter the ship’s draft value.

* Required connection to chart plotter.

2) Use transducer in transom mount or thru-hull mount.

6) Use a ship speed of 10 kn or less.

Fast transmission rate of 3,000 PRR (Pulse Repetition Rate)
per minute (at 5 m depth range)

3) Set the transducer parallel to the bottom of the craft.

7) In some instances, bottom component indicated on the FCV-688 may differ from its actual
bottom structure. Please carefully read the operation manual prior to utilizing this feature.

4) To show a consistent display of the actual bottom, set therange display of the fish finder screen to “auto”.

White Line function distinguishes fish from bottom
The white line function helps you distinguish bottom fish from thebottom by changing the strongest signal color to white. This function is
not only useful discriminating bottom fish but is also valuable for judging
fish school density. The setting range is 0%-100%, in intervals of 1%.
The higher the value the thicker the line.

Field Test
“ACCU-FISH TM ” identifies individual fish with size and fish mark function

Screenshot from fish reef in lake:
Many fish marks appears on the screen in the thick weed
bed. The white line function helps distinguish bottom andweed from the actual fish.

Recognizes individual or multiple fish instantaneously
ACCU-FISH TM is a revolutionary fish size assessment function of the FCV-688. In order to assess
individual fish size, the echo strength from the fish needs to be computed and turned into fish size
display on the screen. It can detect the fish size of 10 to 199 cm, in the depth of 2 to 100 m.

Post-Processing Gain Control

Displaying fish marks
The fish mark can be utilized to display on individual fish echoes
when detected. It helps beginners to identify the fish targets on thedisplay for a more fun fishing experience. Fish mark is selectablefrom two types of fish symbol, circle and square. The fish symbol,
displayed in two different sizes (Large: over 50 cm, Small: 10 to 49cm), is a great help for anglers to identify fish targets. Circle andsquare indentify targets without hiding fish echo.

StripedCircle

SolidSquare

Gain: 4

Displaying fish size or fish depth
Activating the ACCU-FISH from the menu, FCV-688 displays fish size on the individual fish echo.
When the ACCU-FISH TM is used concurrently with fish marks, it greatly helps anglers to identify fishtargets on the display. You may also select and display the target depth instead of fish size, whichhelps to see how far the fish is from the boat.
TMIn some instances, fish size indicated on the FCV-688 may differ from its actual size.
Please carefully read the operation manual prior to utilizing this feature.

Gain: 4With conventional gain controls, changes are made for newechoes only when a change in the setting is applied. With theFCV-688’s Post-Processing Gain Control, changes in the gain
setting are applied to new echoes as well as all of the echoes
already on the screen. Because the changes are applied toboth new and existing returns, you will be able to quickly andeasily find the right gain setting for your conditions.

Gain: 2Fish Alarm function
Circles or squares with fish sizes are displayedon fish echoes. When in dual frequencies
mode, you can set the mark displayed on bothor either frequency screen.

When fish echoes come in the area which you set above the bottom, beeps sound and the alarm icon flashes at
the top right corner of the screen. Furthermore, an integrated alarm setting is also available that can be set by
every and each condition, including water depth, target depth, water temp, bottom component, etc.

Gain: 2

Conventional gain setting

Swivel mounting bracket to adjust
the angle of the display unit
The gimbal mount allows the display unit to swivel aroundwhen desktop mounted. You can adjust the angle of the display
to get the optimum viewing angle.

5.7" COLOR LCD FISH FINDERSPECIFICATIONS OF FCV-688

5.7" color LCD
87.1 (W) x 116.2 (H) mm
640 x 480 (VGA)
Single frequency (50 or 200 kHz),
Dual-frequency, Zoom, Nav data,
A-scope, Marker zoom, Bottom zoom,
Bottom-lock, Bottom Discrimination,
ACCU-FISH™
2-1200 m*

DISPLAY UNIT
Bracket Mount 1.3 kg 2.9 lb
4-ø6

The FCV-688 provides valuable information
to help you locate rich fishing grounds
and boost your catch!

122 4.8"

R103*m, ft, fm, HR, pb can be selected in the menu

431.7"

Alarm60

132 5.2"

˚60

˚106 4.2"
54 2.1"170 6.7"

˚90

207 8.2"

170 6.7"

Bottom, Fish (Normal), ACCU-FISH™,
Fish (B/L), Bottom Discrimination, Fish
Level, Temperature, Speed, Arrival andBattery
Language
CV-688C: Chinese, English
CV-688E: English, French, Spanish,Thai, Vietnamese, Indonesian, Burmese
Range Phasing
up to 1200 m
Expansion Range
Bottom-lock expansion: 2-10 m
Sectional expansion: 2-1200 m
Picture Advance Speed 8 steps: stop, 1/16, 1/8, 1/4, 1/2,1, 2, 4Pulselength & PRR
0.1-3.0 ms, Max 3,000 pulse/min
Interface(Input) BWC, GGA, GLL, GNS, HDG,HDT, MDA, MTW, MWV, RMA, RMB,RMC, VHW, VTG, XTE, ZDA(Output) DBS, DBT, DPT, MTW*, RMB*,
VHW*, TLL* by key operation

Model

219 8.6"

Basic Range

Transducers (Specify when ordering)520-5PSD (Plastic thru-hull), 520-5MSD (Bronze thru-hull),
525STID-MSD (Bronze thru-hull with a speed/temp sensor),
525STID-PWD (Plastic transom with a speed/temp sensor)

50 and 200 kHz
600 W622.4"

GENERAL
Frequency
Output PowerDISPLAY
Display Type
Effective Display Area
Pixel Number
Display

INTERCONNECTION DIAGRAM* External data required.

GPSNavigator

ENVIRONMENT
Temperature-15°C to +55°C
Waterproofing
IP55
POWER SUPPLY
12-24 VDC, 13W
EQUIPMENT LIST
Standard
1. Display Unit
CV-688E/688C (for Chinese)
2. Installation Materials and Standard Spare Parts
Option1. Speed/Temperature Sensor
ST950 (Thru-hull, bronze/plastic)
2. Connector Kit for Connection of Speed& Temperature Sensor or Temperature Sensor
3. NMEA+Power Cable

Beware of similar products

NMEA0183

12/24 VDCTransducer

FURUNO DANMARK A/SFURUNO FRANCE S.A.S.

FURUNO SHANGHAI CO., LTD.

FURUNO U.S.A., INC.

FURUNO SVERIGE AB

FURUNO ESPAÑA S.A.

FURUNO CHINA CO., LTD.

FURUNO PANAMA S.A.

FURUNO FINLAND OYFURUNO ITALIA S.R.L.

FURUNO SINGAPOREFURUNO (UK) LIMITEDFURUNO POLSKA Sp. Z o.o.

FURUNO HELLAS S.A.

FURUNO NORGE A/SFURUNO DEUTSCHLAND GmbHFURUNO (CYPRUS) LTD

U.S.A. | www.furunousa.com

Republic of Panama | www.furuno.com.paU.K. | www.furuno.co.uk

Norway | www.furuno.noOption

All brand and product names are registered trademarks,
trademarks or service marks of their respective holders.

FURUNO ELECTRIC CO., LTD.
Japan | www.furuno.com

GPSPlotter

Denmark | www.furuno.dk
Sweden | www.furuno.se
Finland | www.furuno.fi

Poland | www.furuno.pl

Germany | www.furuno.de

France | www.furuno.fr
Spain | www.furuno.es
Italy | www.furuno.it

Greece | www.furuno.gr

Cyprus | www.furuno.com.cy

China | www.furuno.com/cn

FURUNO ELECTRIC (MALAYSIA)SND. BHD.
Malaysia | www.furuno.my

Hong Kong | www.furuno.com/cn
Singapore | www.furuno.sg

Non-CEMarking

PT FURUNO ELECTRIC INDONESIA

Indonesia | www.furuno.id

C-2302LB
Catalogue No. CA000002007

Auto Tuning(Sensitivity)

FURUNO Digital
Filter

BottomDiscrimination

ACCU-FISH

www.furuno.com