Furuno FCV-1900 User manual

FISH FINDER
HI-RES FISH FINDER
FISH SIZE INDICATOR
FCV-1900
FCV-1900B
FCV-1900G
OPERATOR'S MANUAL
www.furuno.com
Model
(Product Name: FISH FINDER)

The paper used in this manual
is elemental chlorine free.
・FURUNO Authorized Distributor/Dealer
9 52 Ashihara cho,
Nishinomiya, 662 8580, JAPAN
A
:
APR
2015
.
Printed in Japan
All rights reserved.
B
:
MAY
22, 2015
Pub. No.
OME-23860-B
(
REFU
)
FCV-1900 1900B 1900G
0 0 0 1 9 0 5 0 0 1 1

i
IMPORTANT NOTICES
General
• This manual has been authored with simplified grammar, to meet the needs of international us-
ers.
• The operator of this equipment must read and follow the descriptions in this manual. Wrong op-
eration or maintenance can cancel the warranty or cause injury.
• Do not copy any part of this manual without written permission from FURUNO.
• If this manual is lost or worn, contact your dealer about replacement.
• The contents of this manual and equipment specifications can change without notice.
• The example screens (or illustrations) shown in this manual can be different from the screens
you see on your display. The screens you see depend on your system configuration and equip-
ment settings.
• Save this manual for future reference.
• Any modification of the equipment (including software) by persons not authorized by FURUNO
will cancel the warranty.
• All brand and product names are trademarks, registered trademarks or service marks of their
respective holders.
How to discard this product
Discard this product according to local regulations for the disposal of industrial waste. For disposal
in the USA, see the homepage of the Electronics Industries Alliance (http://www.eiae.org/) for the
correct method of disposal.
How to discard a used battery
Some FURUNO products have a battery(ies). To see if your product has a battery, see the chapter
on Maintenance. Follow the instructions below if a battery is used. Tape the + and - terminals of
battery before disposal to prevent fire, heat generation caused by short circuit.
In the European Union
The crossed-out trash can symbol indicates that all types of batteries
must not be discarded in standard trash, or at a trash site. Take the
used batteries to a battery collection site according to your national
legislation and the Batteries Directive 2006/66/EU.
In the USA
The Mobius loop symbol (three chasing arrows) indicates that Ni-Cd
and lead-acid rechargeable batteries must be recycled. Take the used
batteries to a battery collection site according to local laws.
In the other countries
There are no international standards for the battery recycle symbol. The number of symbols can
increase when the other countries make their own recycle symbols in the future.
Cd
Ni-Cd Pb

ii
SAFETY INSTRUCTIONS
WARNINGWARNING
WARNING
Indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided,
can result in minor or moderate injury.
Warning, Caution Mandatory Action
Prohibitive Action
WARNINGWARNING
ELECTRICAL SHOCK HAZARD
Do not open the equipment.
Hazardous voltage exists inside the
equipment. Refer repair to authorized
service personnel.
Immediately turn off the power at the
switchboard if something is dropped
into the equipment.
Continued use of the equipment can
cause fire or electrical shock.
Immediately turn off the power at the
switchboard if the equipment is
emitting smoke or fire.
Continued use of the equipment can
cause fire or electrical shock. Contact a
FURUNO agent for service.
Do not disassemble or modify the
equipment.
Fire, electrical shock or injury can
result.
Keep the equipment away from rain
and water splash.
Fire, electrical shock or injury can
result if water leaks into the equipment.
Do not put containers with liquids on
the top of the equipment.
Fire, electrical shock or injury can
result.
Do not operate the equipment with
wet hands.
Electrical shock can result.
Use the proper fuse.
Use of an incorrect fuse can damage
the equipment and can cause fire.
The operator must read the applicable safety instructions before attempting to operate the
equipment.
Use only the specified power and
signal cable.
Fire or damage to the equipment
can result if a different cable is
used.

SAFETY INSTRUCTIONS
iii
CAUTIONCAUTION
CAUTIONCAUTION
Name: Danger Label
Type: 10-089-7544-0
Code No.: 100-394-370-10
Warning Label
Warning label is attached to the Processor Unit. Do not remove the label.
If the label is missing or illegible, contact a FURUNO agent or dealer about replacement.
Do not use depth information for
navigation while the picture advance
speed is set to "stop".
The depth indication is not refreshed
while the picture is stopped. Use of
depth data for navigation in this case
could lead to grounding or other
dangerous situation.
Do not transmit with the transducer
out of water.
The transducer will be damaged.
Keep the bottom echo and depth
indication shown stably.
Unstable bottom echo and depth
indication can result in grounding if the
vessel is steered acoording to the
informations on the display. If unstable,
adjust the setting of [Bottom Level] or
[TX Power].
No user-serviceable parts inside.
Do not remove cover.
Electrical shock hazard.
DANGER
Do not connect/disconnect the
cables connected to the
processor unit while turning the
power on.
The unit may be damaged.
Adjust the gain properly.
Too little gain may present no picture.
Too much gain shows excessive noise
on the picture.

iv
TABLE OF CONTENTS
FOREWORD ...................................................................................................................vi
SYSTEM CONFIGURATION ........................................................................................viii
1. OPERATION ..........................................................................................................1-1
1.1 Control Description..................................................................................................... 1-1
1.2 How to Turn the Power On or Off............................................................................... 1-2
1.3 How to Adjust Display Brilliance and Key Backlighting .............................................. 1-3
1.4 How to Select Display Mode ......................................................................................1-3
1.4.1 Single frequency display ................................................................................ 1-4
1.4.2 Dual frequency display................................................................................... 1-5
1.4.3 Zoom display.................................................................................................. 1-5
1.4.4 User 1 and 2 displays..................................................................................... 1-8
1.5 How to Adjust the Range ........................................................................................... 1-9
1.6 Shifting the Range.................................................................................................... 1-10
1.7 Adjusting the Gain.................................................................................................... 1-10
1.8 Measuring Depth...................................................................................................... 1-11
1.9 Inscribing Lines (TLL)............................................................................................... 1-11
1.10 Scroll Back Mode ..................................................................................................... 1-11
1.11 Menu Operating Procedure......................................................................................1-12
1.12 Fish Size Histogram (FCV-1900G Only) .................................................................. 1-14
1.12.1 How to show the fish size histogram window............................................... 1-14
1.12.2 How to interpret the fish size histogram window..........................................1-15
1.12.3 How to move the fish size histogram window .............................................. 1-15
1.13 How to Set Measuring Area for Fish Size Histogram (FCV-1900G Only)................ 1-16
1.13.1 Measuring fish in entire area........................................................................ 1-16
1.13.2 Measuring fish in a specific depth range...................................................... 1-17
1.13.3 Measuring bottom fish.................................................................................. 1-17
1.13.4 Measuring fish in a specific area.................................................................. 1-18
1.14 Save and Replay a Screenshot................................................................................ 1-18
1.14.1 How to save a screenshot............................................................................ 1-18
1.14.2 How to replay a screenshot.......................................................................... 1-19
1.14.3 How to delete a screenshot..........................................................................1-19
1.15 Function Keys .......................................................................................................... 1-20
1.15.1 How to execute a program........................................................................... 1-20
1.15.2 How to program the function keys................................................................ 1-21
1.16 Picture Advance Speed............................................................................................ 1-22
1.17 Rejecting Interference .............................................................................................. 1-23
1.18 Erasing Weak Echoes.............................................................................................. 1-23
1.19 Rejecting Low Level Noise.......................................................................................1-24
1.20 Adjusting TVG .......................................................................................................... 1-25
1.21 A-scope Display ....................................................................................................... 1-26
1.22 Fish Information (ACCU-FISH™).............................................................................. 1-27
1.22.1 How to activate ACCU-FISH™..................................................................... 1-28
1.22.2 Fish symbols ................................................................................................ 1-28
1.22.3 Displaying fish info ....................................................................................... 1-29
1.23 Alarms ......................................................................................................................1-29
1.24 Sonde Mark and V-Temperature Graph................................................................... 1-32
1.24.1 How to show the sonde mark....................................................................... 1-32
1.24.2 How to show the V-temperature graph ........................................................ 1-33
1.25 Bottom Discrimination Display ................................................................................. 1-34
1.26 Telesounder Setting (For Japan) ............................................................................. 1-36

TABLE OF CONTENTS
v
1.27 Menu Description......................................................................................................1-37
1.27.1 [Sounder] menu............................................................................................1-37
1.27.2 [Display] menu..............................................................................................1-38
1.27.3 [Measurement] menu ...................................................................................1-39
1.27.4 [Data] menu..................................................................................................1-40
2. SYSTEM MENU .....................................................................................................2-1
2.1 How to Open the [System] Menu................................................................................2-1
2.2 [User] Menu ................................................................................................................2-1
2.3 [Range] Menu.............................................................................................................2-4
2.4 [TX/RX] Menu.............................................................................................................2-5
2.5 [Key] Menu .................................................................................................................2-7
2.6 [Language] Menu........................................................................................................2-7
2.7 [Units] Menu ...............................................................................................................2-7
2.8 [NMEA Port Set&Monitor] Menu.................................................................................2-8
2.9 [Calib] Menu ...............................................................................................................2-9
2.10 [Stabilization] Menu ..................................................................................................2-11
2.11 [Tankenmaru Setting] Menu (For Japan)..................................................................2-12
2.12 [Save Setting] Menu .................................................................................................2-12
2.13 [Image Replay] Menu ...............................................................................................2-13
3. MAINTENANCE & TROUBLESHOOTING............................................................3-1
3.1 Maintenance...............................................................................................................3-1
3.2 Fuse Replacement .....................................................................................................3-2
3.3 Troubleshooting..........................................................................................................3-2
3.4 Error Icon....................................................................................................................3-4
3.5 Communication Port Monitor ......................................................................................3-5
3.6 Diagnostic Test...........................................................................................................3-6
3.7 LCD Test ....................................................................................................................3-7
APPENDIX 1 MENU TREE .......................................................................................AP-1
APPENDIX 2 SCREEN LAYOUT..............................................................................AP-6
APPENDIX 3 DISPLAY DIVISION............................................................................AP-9
SPECIFICATIONS ..................................................................................................... SP-1
INDEX ......................................................................................................................... IN-1

vi
FOREWORD
Congratulations on your choice of the FURUNO FCV-1900 series Fish Finder. We are confident
you will see why the FURUNO name has become synonymous with quality and reliability.
Since 1948, FURUNO Electric Company has enjoyed an enviable reputation for innovative and
dependable marine electronics equipment. This dedication to excellence is furthered by our ex-
tensive global network of agents and dealers.
This equipment is designed and constructed to meet the rigorous demands of the marine environ-
ment. However, no machine can perform its intended function unless installed, operated and
maintained properly. Please carefully read and follow the recommended procedures for operation
and maintenance.
Features
The FCV-1900 series are dual frequency Fish Finders. Comprised of a control unit, processor unit
and transducer (optional or locally supply), the FCV-1900 series show echo-gram (echo) on a
monitor (locally supply). The FCV-1900 series have three models: FCV-1900, FCV-1900B and
FCV-1900G. The features available with each models are shown in the table below.
*: The transmission mode is set by the installer.
You can upgrade the FCV-1900 and FCV-1900B to the high-end model. For details of upgrading,
contact your dealer.
The main features of the FCV-1900 series are
• FURUNO Free Synthesizer (FFS) transceiver design allows use of user-selectable operating
frequencies.
• Displays the fish echo on a vertical or horizontal monitor.
The figures in this manual follow the horizontal monitor.
• Fish size histogram feature provides approximate fish size in the dense school of fish in graph
form (FCV-1900G only).
• The TruEcho CHIRP™technology delivers significant advancements in signal clarity and target
definition (FCV-1900G and FCV-1900B).
• The ACCU-FISH™feature identifies individual fish with size or depth indication and fish symbol.
• Displays echo-gram of up to four frequency on one display.
(Requires Network Sounder DFF1/DFF3 or Bottom Discrimination Sounder BBDS1.)
• Bottom discrimination display provides estimate of bottom composition.
(Requires Bottom Discrimination Sounder BBDS1.)
• Picture storage and replay.
• The scroll back mode shows a maximum of the past two screens of fish finder images.
Feature Model
FCV-1900G FCV-1900B FCV-1900
Fish Size Histogram OK NG NG
Transmission
Mode*
[TruEcho CHIRP] mode (Frequency
modulated wave) OK OK NG
[Std] mode (Continuous wave) OK

FOREWORD
vii
• With quick gain setting, changes in the gain setting are applied to new echoes as well as all the
echoes already on the screen.
• Heaving compensation for stable echo always. (Requires Satellite Compass™.)
• Echo position and other information can be output to a chart plotter.
• Compatible with the Tankenmaru system.
The Tankenmaru system is sold only in Japan (as of May 2015).
Software used with this product
• Ubiquitous QuickBoot Copyright©2015 Ubiquitous Corp. All rights reserved.
• This product includes software to be licensed under the GNU General Public License (GPL) ver-
sion 2.0, GNU Lesser General Public Software License (LGPL) version 2.0, Apache, BSD and
others. The program(s) is/are free software(s), and you can copy it and/or redistribute it and/or
modify it under the terms of the GPL version 2.0 or LGPL version 2.0 as published by the Free
Software Foundation. Please access to the following URL if you need source codes: https://
www.furuno.co.jp/cgi/cnt_oss_e01.cgi.

viii
SYSTEM CONFIGURATION
FCV-1903
INTERFACE UNIT PWR
Processor Unit
FCV-1901
DVI
converter
USB connector
(for brill-control)
Monitor
External KP
Net Sonde
NMEA0183 device
(Sonar, Current Indicator
Satellite Compass
TM
,
Chart Plotter, etc.)
Junction Box
RJB-002
Control Unit
FCV-1902
Temperature Sensor
T-04MSB,
T-04MTB
Booster Box
BT-5
Transducer Transducer
Ethernet HUB
HUB-101
Interface Unit
FCV-1903
Network Fish Finder
DFF series,
BBDS1
Telesounder*
TS-80M2,
TS-7100
12-24 VDC
Rectifier Unit
RU-1746B-2
AC/DC Power Supply Unit
PR-240
100-115/
200-230 VAC,
1 ø, 50/60 Hz
100/110/115/
220/230 VAC,
1ø, 50/60 Hz
: Standard supply
: Optional or local supply
*: Product sold in Japan only
(as of May 2015)
Tankenmaru System*

1-1
1. OPERATION
1.1 Control Description
No. Key Description
1Short press: Turn the power on. Open the brilliance adjustment window.
Long press: Turn the power off.
2Short press: Take a screenshot.
Long press: Open the preview window of the screenshot.
3 Touchpad
For FCV-1900G
• Move the measuring area marker when the measuring mode is [Specific
Range] or [Specific Area] and the function of the touchpad is to control
measuring area.
• Move the fish size histogram window when the function of the touchpad
is to move the fish size histogram window.
For FCV-1900 and FCV-1900B
• Move the VRM (Variable Range Marker) when VRM key is in the VRM
mode.
• Move the TLL line (green dashed line) when VRM key is in the TLL mode.
4
For FCV-1900G
• Short press: Switch the function of the touchpad between controlling the
measurement area and moving the fish size histogram window.
• Long press: No function.
For FCV-1900 and FCV-1900B
• Short press: Execute assigned program.
• Long press: Open the menu to assign the function.
5
For FCV-1900G
• Short press: Switch the measuring mode (see section 1.13).
• Long press: No function.
For FCV-1900 and FCV-1900B
• Short press: Execute assigned program.
• Long press: Open the menu to assign the function.
21 3
ESC
MENU
MODE
F1
F2
VRM
RANGE
SHIFT
GAIN
PUSH TO ENTER
Power lamp
1 2
3
4 5 6
7 8 9
1010
11
12
1313
1414
1515
1616
1
2

1. OPERATION
1-2
1.2 How to Turn the Power On or Off
Press the key to turn on the power. A beep sounds and the display changes in the
following sequence: FURUNO display →model display, then the last-used display is
shown. When the key brilliance is set to other than “0”, the power lamp above the key
lights.
To turn off the power, press the key more than three seconds. The time remaining
until power off is counted down on the screen.
Note 1: Do not turn off the ship’s mains when the processor unit is running. The setting
values may not be saved properly.
Note 2: The processor unit consumes electric power when the power is off (stand-by
power consumption: 0.06 A). It is recommended to turn off the fish finder at the ship’s
mains if you will not be using it for some time.
6
For FCV-1900G
• Short press: Switch the setting direction between lengthwise direction
(depth) and cross direction (time) when the measuring mode is [Specific
Area].
• Long press: No function.
For FCV-1900 and FCV-1900B
• Short press: Execute assigned program.
• Long press: Open the menu to assign the function.
7,
For FCV-1900G
• Adjust the measuring area when the measuring mode is [Specific Range],
[Bottom Trace], or [Specific Area].
For FCV-1900 and FCV-1900B
• Adjust the display range.
8 RANGE Assign the range control function to the ENTER knob.
9 GAIN Assign the gain control function to the ENTER knob.
10 SHIFT Assign the shift range control function to the ENTER knob.
11 VRM • Assign the VRM and TLL control functions to the ENTER knob.
• Switch the VRM key’s mode: VRM mode and TLL mode.
12 ENTER knob
Rotate • Adjust the display range, gain, VRM, TLL line, or shift range.
• Move the cursor*.
• Adjust setting value*.
*: Clockwise rotation increases the value and moves the cursor
downward and rightward. Counterclockwise rotation decreases
the value and moves the cursor upward and leftward.
Short
press
• Confirm the selection.
• Output the TLL information to a chart plotter.
Long
press
• Activate the scroll back mode.
13 MENU/ESC • Open/close the menu.
• Escape from current operation.
14 MODE Open the [Mode] window to select the display mode.
15, 16 F1, F2 Short press: Execute assigned program.
Long press: Open the [FUNC] tab to assign the function.
No. Key Description
3

1. OPERATION
1-3
1.3 How to Adjust Display Brilliance and Key Back-
lighting
Adjust the display brilliance and key backlighting as follows. The display brilliance con-
trol is effective for these FURUNO monitors: MU-190, MU-190V, MU-150HD, MU-
190HD, MU-231.
1. Press the key to show the brilliance adjustment
window.
2. Rotate the ENTER knob to select [LCD] or [KEY].
• [LCD]: Adjust the display brilliance (setting range: 0 to 9).
• [KEY]: Adjust the backlighting for the keys (setting range: 0 to 4).
3. Rotate the ENTER knob to change the setting value, then push the knob.
The brilliance adjustment window is automatically closed if there is no operation
for approx. six seconds.
1.4 How to Select Display Mode
This equipment has seven display modes. Select the display mode as shown in the
procedure below.
1. Press the MODE key to open the [Mode] window.
The [Mode] window is automatically closed if there is no operation for approx. six
seconds.
2. Rotate the ENTER knob to select the display mode, then push the knob.
The screen related to the mode you selected appears. The display mode in use
appears at the top left corner of the screen.
Indication Meaning Indication Meaning
HF High frequency LF_BD Low frequency bottom discrim
LF High frequency HF1 High frequency with gain set-
ting 1
HF_BL High frequency bottom lock HF2 High frequency with gain set-
ting 2
LF_BL Low frequency bottom lock Mix Mix display
HF_BZ High frequency bottom zoom HE High frequency external fish
finder
LF_BZ Low frequency bottom zoom LE Low frequency external fish
finder
HF_MZ High frequency marker zoom HT High frequency telesounder
LF_MZ Low frequency marker zoom LT Low frequency telesounder
HF_BD High frequency bottom dis-
crim
Brill
Min Max
KEY
LCD
Mode
LF-ZOOM
LF
HF
HF-ZOOM
USER-1
USER-2
DUAL

1. OPERATION
1-4
Display example (low frequency echo)
1.4.1 Single frequency display
Low frequency
The lower the frequency of the ultra-
sonic signal, the wider the detection
area. Therefore, the low frequency is
useful for general detection and judg-
ing bottom condition.
High frequency
The higher the frequency of the ultra-
sonic signal, the better the resolution.
For this reason the high frequency is
ideal for detailed observation of
school of fish.
Depth
2020
4040
6060
8080
47.647.6ftft
*: Each bar equals 30 seconds.
0.00.0 00
0/99
x 1 x 1 x 1
Function of the
F1 and F2 key.
VRM 0.0
LF: 2.0
From left:
Internal fish finder,
external fish finder,
telesounder
20
40
60
47.6
m
0.0 0
x 1 x 1 x 1
LF: 2.0
Stabilization icon:
Appears when the
heaving
compensasion is
on.
Color bar
Display mode and gain
(Left: Display mode
right: Gain䠅
Picture advance speed Alrarm icon
Transmission line
Range scale
Alarm marker
Fish echo
Bottom
Minute marker*
䠷䠢1䠹Graph Location䠷䠢1䠹Graph Location 䠷䠢2䠹TVG䠷䠢2䠹TVG
Function of the ENTER knob
Screenshots taken/
Total no. of screenshots
High frequency
Low frequency
Detection area

1. OPERATION
1-5
1.4.2 Dual frequency display
The low frequency echo appears on the left; the high frequency echo on the right. This
display is useful for comparing underwater conditions with two different frequencies.
Note: The dual frequency and zoom display are divided vertically in the default setting.
You can divide the display horizontally (see page 1-38).
1.4.3 Zoom display
The zoom displays expand the specified area of the single frequency echo. Four
modes are available: bottom lock, bottom zoom, marker zoom and bottom discrimina-
tion. The default mode is bottom lock. For how to change the zoom mode, see page 1-
38.
Bottom lock display
The bottom lock display provides a normal picture on the right half of the screen and
a 16-9000 feet (default: 16 feet) wide layer in contact with the bottom is expanded onto
the left half of the screen. This mode is useful for detecting bottom fish.
Note 1: To adjust the range of the zoom display, go to the [Range] menu (see
section 2.3).
Note 2: To show or hide the zoom marker, go to the [Display] menu (see page 1-38).
47.647.6mm
0.00.0
2020
4040
6060
8080
00
2020
4040
6060
8080
00
0/99
x 1 x 1 x 1
VRM 0.0
HF: 2.0LF: 2.0
Low frequency High frequency
Freq. Beamwidth Resolution Detection
range Bottom tail
Low
High
Wide
Narrow
Low
High
Deep
Shallow
Long
Short
31.231.2
mm
0.00.05.35.3
Bottom lock display Single freq. display
Zoomed
fish echo
Zoom
marker
Fish echo
Bottom displayed
flat
*: This section zoomed on
the left half.
*
0/99
x 1
VRM 0.0
LF: 2.0LF_BL
1010
2020
3030
4040
00
33
22
11
00
55
44

1. OPERATION
1-6
Bottom zoom display
This mode expands bottom and bottom fish on the left-half window, and is useful for
determining bottom contour. When the bottom depth increases, the display automati-
cally shifts to keep the bottom echo at the lower part of the screen.
Marker zoom display
The marker zoom mode expands specified area of the normal picture to full vertical
size of the screen on the left-half window. You may specify the portion to expand by
operating the VRM (Variable Range Marker). The area between the VRM and zoom
marker is expanded. This mode is useful for determining the size of fish in the midwa-
ter.
30.5
30.5
m
m
0.0
0.0
0.0
0.0
0/99
x 1
Bottom zoom display Single freq. display
Bottom
Zoom marker
Zoom marker automatically follows
change in depth.
VRM 0.0
LF: 2.0LF_BZ
10
10
20
20
30
30
40
40
0
0
28
28
29
29
30
30
31
31
27
27
30.830.8mm
20.020.022.522.5
0/99
x 1
Marker zoom display Single frew. display
Zoomed
fish echo
VRM
Fish
echo
Fish
echo
Zoom markerZoom marker
*
*: This section zoomed.
VRM 0.0
LF: 2.0LF_MZ
1010
2020
3030
4040
00
2121
2222
2323
2424
2020
2525

1. OPERATION
1-7
Bottom discrimination display
The bottom discrimination display has two modes: Bottom discrimination 1/2 and Bot-
tom discrimination 1/3. For how to change the mode, see page 2-4.
• Bottom discrimination 1/2 display:
The bottom discrimination 1/2 screen shows the single frequency echo on the right
half of the screen and the bottom discrimination display occupies the left half of the
screen. The bottom discrimination display shows the bottom as a straight line, which
is useful for determining bottom hardness.
• Bottom discrimination 1/3 display:
This display is similar to the bottom discrimination 1/2 display except the bottom dis-
criminator display occupies the bottom one-third of the left half of the screen as be-
low.
Bottom
discrimination 1/2
display Single freq. display
*
*: Bottom tail
Long tail = Hard bottom
Short tail = Soft bottom
30.230.2
mm
0.0
0.0
0/99
x 1 x 1 x 1
VRM 0.0
LF: 2.0LF_BD
10
10
20
20
30
30
40
40
0
0
2
2
1
1
0
0
10
10
20
20
Bottom
discrimination 1/3
display Single freq. display
*: Bottom tail
Long tail = Hard bottom
Short tail = Soft bottom
*
30.230.2mm
0.00.0
x 1 x 1 x 1
LF: 2.0LF_BD
0/99 VRM 0.0
1010
2020
3030
4040
00
22
11
00
1010
33

1. OPERATION
1-8
1.4.4 User 1 and 2 displays
The user displays let you customize displays as desired. Two displays are provided
and the default settings for each are
User 1 display: This screen is split vertically three ways and is comprised of LF, HF
and MIX displays.
User 2 display: This display is split in fourths and is comprised of LF, HF, LF bottom
zoom and HF bottom zoom displays.
For how to customize user displays, see section 2.2.
Default user 1 and user 2 display
Mix display
Low
frequency
display
High
frequency
display
Low freq. display High freq. display
Bottom zoom
display (LF)
Bottom zoom
display (HF)
49.6
m
44.5
m
0/99
x 1 x 1 x 1
VRM 0.0
HF: 2.0LF: 2.0 Mix
0.00.0 0.00.0
0/99
x 1 x 1 x 1
VRM 0.0
HF: 2.0LF: 2.0
HF_BZLF_BZ
2020
4040
6060
8080
00
2020
4040
6060
8080
00
2020
4040
6060
8080
00
2020
4040
6060
8080
00
2020
4040
6060
8080
00
4545
5050
5555
6060
4040
4545
5050
5555
6060
4040

1. OPERATION
1-9
1.5 How to Adjust the Range
Select the display range indicated on the screen. Default settings for the display range
are shown below.
*: Japanese unit of depth measurement.
1. Press the RANGE key to assign the range control function to the ENTER knob.
2. Rotate the ENTER knob to select the display range.
The current setting value appears at the upper right of the display.
Note 1: For FCV-1900 and FCV-1900B, you can select the display range by pressing
the or key.
Note 2: Basic ranges may be preset as desired, on the [Range] menu (see
ssection 2.3).
Note 3: The range can be adjusted automatically to display the bottom echo on the
screen always. For how to turn on the auto range mode, see page 2-4. The range shift
and range control are inoperative in the auto range mode.
Note 4: In the dual frequency display, the range for the low and high frequencies can
be adjusted mutually or independently. Turn on [Split Range] in the [Range] menu to
enable independent adjustment (see page 2-4).
Adjusting the range in the dual frequency and user display
The range of the each echo display (other than mix and zoom display) can be set in-
dividually on the dual frequency and user display. The range shift and gain control also
can be set individually.
Note: To set the range individually, turn on [Split Range] in the [Range] menu. The
range of the external fish finder and telesounder can set individually regardless of the
setting for [Split Range].
1. Press the RANGE key to select the display to adjust the range.
The red cursor appears at the in-
dication of the mode and gain on
the selected display. For exam-
ple of the four-way split display,
the cursor moves in the se-
quence as shown in the figure
right.
Note: The indication of the mode
and gain does not appear when
the [Mode&Gain Display] is
turned off.
2. Rotate the ENTER knob to select the display range.
The range of the selected display changes.
Unit Range
12345678
meter 10 20 40 80 150 300 500 1000
feet 30 60 120 250 500 1000 1600 3000
fathoms 5 10 20 40 80 160 250 500
Hiro* 6 12 25 50 100 200 300 600
passi/braza 6 12 25 50 100 200 300 600
㽲
㽳
㽴
㽵
㪟㪫㪑㩷㪉㪅㪇 㪟㪝㪑㩷㪉㪅㪇
㪣㪫㪑㩷㪉㪅㪇 㪣㪝㪑㩷㪉㪅㪇
Red cursor appears on the selected display.
Mode and
gain
Example: Four-way split display

1. OPERATION
1-10
1.6 Shifting the Range
The basic range and range shifting functions used together give you the means to se-
lect the depth you can see on the screen. The basic range can be thought of as pro-
viding a “window” into the water column and range shifting as moving the “window” to
the desired depth.
Note: This function is inoperative when the auto range mode is active.
1. Press the SHIFT key to assign the range shift control function to the ENTER knob.
When you press the SHIFT key while the auto range mode is active, "N/A" ap-
pears at the upper right of the display.
2. For the user display, press the SHIFT key several times to select the display to
adjust the range shift.
3. Rotate the ENTER knob to select the amount of shift desired.
The current setting value appears at the upper right of the display.
Note: The bottom echo may be lost if the amount of shift is greater than actual depth.
1.7 Adjusting the Gain
Adjust the gain according to signal strength.
1. Press the GAIN key to assign the gain control function to the ENTER knob.
2. For the dual frequency and user display (other than mix and zoom displays), press
the GAIN key several times to select the display to adjust the gain.
3. Rotate the ENTER knob to adjust the gain so fish echoes are clearly displayed
with minimal noise on the screen (setting range: 0.0 to 10.0).
The new gain setting is also applied to past echoes. The current setting value ap-
pears at the upper right of the display.
Window can be
shifted up and
down to select
starting depth.
Gain too high Gain proper Gain too low
CAUTIONCAUTION
Adjust the gain properly.
Too little gain may present no picture.
Too much gain shows excessive
noise on the picture.