Koden CVS-872D User manual

CVS-872D Revision History
0092607062-01 i
CVS-872D Installation Manual
Doc No. 0092607062
Document Revision History
No.
Doc. –Rev. No.
Date Revised
(Y/M/D)
Revised content
0
0092607062-00
2021/08/05
First edition
1
0092607062-01
2021/11/10
Error correction
2
3
4
5
6
7
8
9
10
Document No. Revised Version Norm
When part of the document needs to be revised, the document has advanced revised number.
The document No. is indicated at the lower right side on the cover and at the left or right side
of the footer region of each page.
© 2021 Koden Electronics Co., Ltd. All rights reserved.
No part of this publication may be reproduced, transmitted, translated in any form by any means
without the written permission of Koden Electronics Coo., Ltd. The technical descriptions contained in
this publication are subject to change without notice. Koden assumes no responsibility for any errors,
incidentals or consequential damages caused by misinterpretation of the descriptions contained in this
publication.

Important Notice CVS-872D
ii 0092607062-01
Important Notice
•For copy and transcription of this Installation Manual (hereinafter referred to as this manual),
permission from Koden is needed. Koden prohibits the un-authorized copy and transcription of this
manual.
•If this manual is lost or damaged, consult a dealer of Koden or Koden.
•The specification of the products and the contents in this manual are subject to change without
notice.
•The contents displayed on the menu of product may be different from the expression of this
manual. The fonts and shapes of the keys and menus in the illustration may differ from the actual
ones, and some parts may be omitted.
•Koden is not liable for damages and troubles arisen from misunderstanding of the contents in this
manual.
•Koden is not liable for any damages caused by earthquake, lightning, wind and flood damage and
fire for which Koden is not responsible, and actions by third parties, other accidents, customer’s
unintended error/abuse and the use under other abnormal conditions.
•Koden is not liable for damages of accompaniment (change/loss of memorized content, loss of
business profit, stop of business) arisen from use or failure of our products.
•If the stored data are changed or lost, irrespective of causes of troubles and damages, Koden is
not liable for them.
•Koden is not liable for any damages arisen from malfunction caused by combination of software
and connected equipment in which Koden is not engaged.

CVS-872D For Your Safe Operation
0092607062-01 iii
For Your Safe Operation
Symbol used in this Installation Manual
The following graphical symbols are used in this manual. The meaning of each symbols shall
be well understood and apply at maintenance and inspection works.
Symbol
Meaning
Mark for warning
This symbol denotes that there is a risk of death or serious injury when
not dealing with it correctly.
Mark for danger high voltage
This symbol denotes that there is a risk of death or serious injury caused
by electric shock when not dealing with it correctly.
Mark for caution
This symbol denotes that there is a risk of slight injury or damage of
device when not dealing with it correctly.
Mark for prohibition
This symbol denotes prohibition of the specified conduct. Description of
the prohibition is displayed near the mark.
Caution items on equipment
Be careful of a high voltage inside.
A high voltage, which may risk your life, is used. This high voltage
remains in the circuit after you have powered off switch. To prevent
touching the high voltage circuit inadvertently, the hard cover is provided
to the high voltage circuit and the high voltage caution label is affixed.
Ensure to power off switch for your safety and discharge the electricity
remaining in the capacity before starting to check. An engineer
authorized by our company should inspect and maintain
Be sure to power off in the boat.
If the power switch is inadvertently powered on during work, you will be
electrified. To prevent such accident from occurring, ensure to power off
in the boat and the power of equipment. Furthermore, it is safer to hang
the caution tag described as [Under Work] near the power switch of
equipment.
Be careful of dust
Inhaling dust may cause A respiratory disease. When cleaning the
inside of equipment, be careful not to inhale dust. Wearing a safety
mask is recommended.
Warning
Warning
Caution
Warning

For Your Safe Operation CVS-872D
iv 0092607062-01
Caution on location of equipment
Do not install the equipment where it is excessively damp and suffers
from excessive water drops.
Measures against static electricity
The static electricity may be generated from the carpet on the floor in
the cabin or clothes made of synthetic fiber. The static electricity may
destroy the electronic parts on the circuit board. Handle the circuit
board, taking the measure of static electricity free.
Caution at installation of a transducers
Install the transducer at the location where it is not affected by bubble
and noise The bubble and noise seriously degrade the performance of
this unit.
Caution Items on handling
Do not disassemble or modify. It may leads to trouble, fire, smoking or
electric shock. In case of trouble, contact our dealer or our company.
In case of smoke or fire, boat power off and the power of this unit. It may
cause fire, electric shock or damage.
Be cautious of remaining high voltage.
A high voltage may remain in the capacitor for several minutes after you
have powered off. Before inspecting inside, wait at least 5 minutes after
powering off or discharge the remaining electricity in an appropriate
manner. Then, start the work.
The information displayed in this unit is not provided directly for your
navigation. For your navigation, be sure to see the specified material.
Use the specified fuse. If un-specified fuse is used, it may cause a fire,
smoke or damage.
Whenever transmitting, be sure to submerge the transducer in water
first. If transmitted without submerging the transducer, it may be
damaged.
Caution
Caution
Caution
Warning
ing
Warning
Caution
Caution
Caution

CVS-872D Contents
0092607062-01 v
Contents
Document Revision History.......................................................................................................................i
Important Notice.......................................................................................................................................ii
For Your Safe Operation.........................................................................................................................iii
Contents....................................................................................................................................................
...................................................................................................................................................v
System Configuration.............................................................................................................................vii
Configuration of Equipment...................................................................................................................viii
Characteristics of Transducer................................................................................................................ xiii
Dimensions............................................................................................................................................xiv
Specifications .........................................................................................................................................xv
Chapter 1 Installation …………………………………………………………………….1-1
1.1 Installation precautions..........................................................................................................1-1
1.1.1 Unpacking of components..................................................................................................... 1-1
1.1.2 Appearance verification of each unit and accessories ..........................................................1-1
1.1.3 Selection of location for installation .......................................................................................1-1
1.1.4 Laying and connection of cables ...........................................................................................1-2
1.1.5 Coordination after installation................................................................................................ 1-2
1.2 Installation of CVS-872D Display unit.................................................................................... 1-3
1.2.1 Desk-top installation...............................................................................................................1-3
1.2.2 Flush-mount installation......................................................................................................... 1-5
1.3 Installation of transducer........................................................................................................1-6
1.3.1 Cautions on installation of transducer.................................................................................... 1-6
1.3.2 Precautions regarding transducer installation .......................................................................1-7
1.3.3 In the case of inner hull installation........................................................................................ 1-8
1.4 Wiring...................................................................................................................................1-26
1.4.1 Connection of cables to Display unit.................................................................................... 1-26
1.5Connection of Hemisphere V102/V104s/V200s GPS Compass / ComNav Vector G1 GPS
Satellite Compass................................................................................................................1-53
1.5.1 Connection of Hemisphere V102/V104s/V200s GPS Compass / ComNav Vector G1 GPS
Satellite Compass................................................................................................................1-53
1.5.2 Connection of Hemisphere V104s GPS Compass..............................................................1-58
1.5.3 Connection of Hemisphere V200s GPS Compass..............................................................1-63
1.5.4 Setting of Hemisphere V102/V104s/V200s GPS Compass / ComNav Vector G1 GPS
Satellite Compass................................................................................................................1-68
1.6List of input/output sentences.............................................................................................. 1-74
1.6.1 Input sentence .....................................................................................................................1-74
1.6.2 Output sentence................................................................................................................... 1-74
1.6.3 Input/Output sentence details.............................................................................................. 1-75
Chapter 2 Adjustment …………………………………………………………………….2-1
2.1 Setup of transducer................................................................................................................ 2-1
2.1.1 Setup of type of transducer.................................................................................................... 2-1
2.2 Setup of frequency and beam angle...................................................................................... 2-2
2.3 Setup of Bottom Limit.............................................................................................................2-3
2.4 Setup of Draft Set ..................................................................................................................2-3
2.5 Setup of Gain (TD) for transducer .........................................................................................2-3
2.6 Setup of Output Limit for transmitter...................................................................................... 2-4
2.6.1 Display of Output Limit Menu................................................................................................. 2-4
2.6.2 Relation of the set value between [Output Limit] and [MENU] - [EchoAdjust] - [TX Power]
...............................................................................................................................................2-5
Chapter 3 Maintenance ………………………………………………………………..3-1
3.1 Inspection............................................................................................................................... 3-1
3.2 Cleaning.................................................................................................................................3-1

Contents CVS-872D
vi 0092607062-01
3.2.1 Display unit.............................................................................................................................3-1
3.2.2 Transducer.............................................................................................................................3-2
3.3 Fuse Replacement.................................................................................................................3-2
3.4 Diagnostics of troubles...........................................................................................................3-2
3.4.1 Necessary information for requesting repair..........................................................................3-2
3.4.2 Diagnostics test......................................................................................................................3-3
3.4.3 Initialize ..................................................................................................................................3-4
3.4.4 Update of program.................................................................................................................3-5
3.5 If you suspect a trouble..........................................................................................................3-6

CVS-872D System Configuration
0092607062-01 vii
System Configuration
Connection diagram
Owner supply
Option
Standard configuration
Legend
Display unit CVS-872D
With mounting bracket and hard cover
J1 connector
J2 connector
J3 connector
External echo sounder
(Owner supply)
CW-372-5M
Speaker with amplifier
(Owner supply)
CW-264A-2M
NMEA2 circuit input output
(12 V power output)
(Owner supply)
CW-373-5M
CW-374-5M
CW-376-5M
CW-410-5M
GPS sensor
CCD camera
External monitor
NMEA1 circuit input output
(Owner supply)
J8 connector
Junction
box
JB-34
ジャンクシ
ョンボック
ス
CW-836-3M
CW-259-2M
POWER connector
White +
Black -
10.8 to 31.2 VDC
Transducer
TDM-052A/062A/083
TDM-091/091D/041/031D
TDM-071
J7 connector
CW-373-5M
CW-374-5M
CW-376-5M
CW-410-5M
J4
connector
CW-405-0.3M
CW-576-0.5M
J5
connector
J6
connector
CW-844-3M

Configuration of Equipment CVS-872D
viii 0092607062-01
Configuration of Equipment
Standard Equipment Configuration List
No.
Name of item
Type
Remark
Weight/
Length
Qty
1
Display unit
CVS-872D
With mounting bracket
and knobs
9.1 kg
1
2
Hard cover
A30MB10250
390g
1
3
DC power cable
CW-259-2M
With 3-pin connector and
one end plain
2 m
1
4
Fuse
F-7161-10A/
N30C-125 V
type(φ6.4 × 30)
Normal fusion type for
main power
1
5
Junction Box
JB-34
Transducer junction box
0.58kg
1
6
Connector
BD-06BFFA-LL6001
6-pin water resistant
connector
2
7
Transducer
Refer to next page
“Type of transducer”
Transducer cable
1
8
Basic Operation
Manual
CVS-872D.BM.E
English
1
9
Full Menu Reference
CVS-872D.FM.E
English
1
10
Quick Reference
CVS-872D/875D/877D
.QR.E
English
1
11
Installation manual
CVS-872D.IM.E
English
1
12
Menu List
CVS-872D/875D/877D
.ML.E
English
1
13
Transducer cable
CW-836-3M
With5-pin connectorand
one end solderingtoinsert
toJB
3 m
1
CW-844-3M
For connection of water
temp. and XID data.
3 m
1

CVS-872D Configuration of Equipment
0092607062-01 ix
Type of broadband transducer
Caution: Broadband transducer (TDM-052A, TDM-062A, TDM-083, TDM-091/091D
and TDM-071) shall not be operated in the air, as it will be damaged.
No.
Specification
Frequency
output
Material/
Cable length/
Cable diameter
Mounting
method
Beam width
(- 6 dB)
(Right and left x
Back and forth)(-6 dB)
1
TDM-052A
Low frequency
38 to 75 kHz
High frequency
130 to 210 kHz
Rubber mold
15 m
φ11
Ship’s
bottom
Low frequency
(38 kHz) 27° × 14°
(60 kHz) 18° × 10°
(75 kHz) 14° × 7°
High frequency
(130 kHz) 11°
(170 kHz) 8°
(210 kHz) 7°
2
TDM-062A
Low frequency
38 to 75 kHz
High frequency
85 to 135 kHz
Rubber mold
15 m
φ11
Ship’s
bottom
Low frequency
(38 kHz) 27° × 14°
(60 kHz) 18° × 10°
(75 kHz) 14° × 7°
High frequency
(85 kHz) 17°
(100 kHz) 13°
(135 kHz) 10°
3
TDM-083
Low frequency
28 to 60 kHz
High frequency
130 to 210 kHz
Rubber mold
15m
φ11
Ship’s
bottom
Low frequency
(28kHz) 31° × 15°
(45 kHz) 18° × 10°
(60 kHz) 12° × 7°
High frequency
(130 kHz) 11°
(170 kHz) 7°
(210 kHz) 6°
4
TDM-091/091D
Low frequency
42 to 65 kHz
High frequency
130 to 210 kHz
Rubber mold
15 m
φ11
Ship’s
bottom/
Ship’s side
Low frequency
(42 kHz) 35°
(65 kHz) 22°
High frequency
(130 kHz) 14°
(210 kHz) 8°
5
TDM-071
35 to 65 kHz
Rubber mold
15 m
φ11
Ship’s
bottom/
Ship’s side
(35 kHz) 31° × 24°
(65 kHz) 17° × 13°

Configuration of Equipment CVS-872D
x 0092607062-01
TDM-052A Beam Angle
TDM-062A Beam Angle
Koden TDM-062
Transducer
Beam width to -6 dB points
0
5
10
15
20
25
30
020 40 60 80 100 120 140 160
Freqency (kHz)
Degrees
Beam Width Athwartships
Beam Width Fore & Aft
Beam Width Average (Low Freq.)
Beam Width High Frequency
Koden TDM-052
Transducer
Beam width to -6 dB points
0
5
10
15
20
25
30
050 100 150 200 250
Frequency (kHz)
Degrees
Beam Width Athwartships
Beam Width Fore & Aft
Beam Width Average (Low Freq.)
Beam Width High Frequency
Frequency (kHz)

CVS-872D Configuration of Equipment
0092607062-01 xi
Type of transducer
No.
Specification
Frequency output
Material/
Cable length/
Cable diameter
Mounting
method
Beam width
(- 6 dB)
(Right and left x
Back and forth)(-6 dB)
1
TD-282
28kHz
2kW
Rubber mold
15 m
φ11
Ship’s
bottom/
Ship’s side
40° × 23°
2
TD-401D
40kHz
1KW
Rubber mold
10 m
φ11
Ship’s
bottom/
Ship’s side
50° × 158
3
TD-501C
50/200kHz
1kW
Rubber mold
10 m
φ11
Ship’s
bottom/
Ship’s side
(50kHz) 58° × 20°
(200kHz) 17° × 18°
4
TD-501T-3B
50/200kHz
1kW
Bronze
9 m
Φ5
Through
hull
(50kHz) 20° × 22°
(200kHz) 5° × 5°
5
TD-501B
50kHz
1kW
Rubber mold
10 m
φ11
Ship’s
bottom/
Ship’s side
44° × 16°
6
TD-751
75kHz
1kW
Rubber mold
10 m
φ11
Ship’s
bottom/
Ship’s side
26° × 10°
7
TD-2001D
200kHz
1kW
Rubber mold
10 m
φ11
Ship’s
bottom/
Ship’s side
10° × 10°
8
TD-284
TD-284A
28kHz
3kW
Rubber mold
15 m
φ11
Ship’s
bottom/
Ship’s side
30° × 18°
9
TD-404T
40kHz
3kW
Rubber mold
15 m
φ11
Ship’s
bottom/
Ship’s side
16° × 11°
10
TD-504T
50kHz
3kW
Rubber mold
15 m
φ11
Ship’s
bottom/
Ship’s side
14° × 9°
11
TD-504F
50kHz
3kW
Rubber mold
15 m
φ11
Ship’s
bottom/
Ship’s side
14° × 11°
12
TD-754
75kHz
3kW
Rubber mold
15 m
φ11
Ship’s
bottom/
Ship’s side
14° × 7°
13
TD-66
200kHz
1kW
Rubber mold
20 m
φ11
Ship’s
bottom/
Ship’s side
6° × 6°

Configuration of Equipment CVS-872D
xii 0092607062-01
Option List
No.
Name of Item
Specification
Remark
Weight/
Length
1
Power rectifier
PS-010
Fuse (5A) 2 pcs.
2
AC power cable
VV-2D8-3M
Both ends plain.
3 m
3
Transducer
extension cable
C44-02
Refer to “Connection of
XID-adaptive TD” (page 1-29) for
cable configuration.
Specify
length at
order
4
Grounding cable
OW7/1.6S-3M
3 m
5
Connecting cable
CW-372-5M
With a 5-pin water resistant
connector & one end plain
5 m
CW-373-5M
With 6-pin water resistant
connectors both ends
5 m
CW-374-5M
With a 6-pin connector & a 6-pin
water resistant connector
5 m
CW-376-5M
With a 6-pin water resistant
connector & one end plain
5 m
CW-410-5M
With 6 pin water resistant
connectors both ends (Both 1-pin
(shield) are not wired)
5 m
CW-560-2M
With 15-pin water resistant D-Sub
connectors both ends
2 m
CW-264A-2M
12-pin waterproof connector at one
end / φ3.5 stereo jack at one end
2 m
CW-405-0.3M
Junction cable for CCD camera
0.3 m
6
Cable for external
monitor
CW-576-0.5M
Junction cable for external monitor
With a 10-pin water resistant
connector & a D-Sub connector
0.5 m
7
Connector
BD-05BFFA- LL6001
5-pin water resistant connector
BD-06BFFA- LL6001
6-pin water resistant connector
8
Transmission filter
C29EHB004A
Filter against leakage from wireless
equipment
No.
Specification
Frequency
output
Material/
Cable length/
Cable diameter
Mounting
method
Beam width
(- 6 dB)
(Right and left x
Back and forth)(-6 dB)
14
TDM-031
50/200kHz
1kW
Rubber mold
15 m
φ11
Ship’s
bottom/
Ship’s side
(50 kHz) 21° × 15°
(200 kHz) 5° × 3°
15
TDM-041/041D
50/200kHz
1kW
Rubber mold
15 m
φ11
Ship’s
bottom/
Ship’s side
(50 kHz) 30° × 30°
(200 kHz) 30° × 30°

CVS-872D Characteristics of Transducer
0092607062-01 xiii
Characteristics of Transducer
Directivity angle and detecting distance of transducers
The diagrams below are to convert the range to finding area under own boat in meters depending on
the spread of directivity angle of a transducer.
For example, when the directivity angle is 50˚, it can be confirmed that you are watching a range with a
diameter of 47 m at depth of 50 m, and a range with a diameter of 93 m at depth of 100 m.
Differences of performance and application of transducers depending on their
operating frequencies
Characteristics of transducers vary depending of the operating frequency. The table below shows the
differences of performance and characteristics depending on the frequency.
Frequency
Performance/application
Low frequency
High frequency
Directivity angle
Wide
Narrow
Detectable depth
Deep
Shallow
Resolution
(Capability to find fish school
distribution)
Less
More
Influence of air bubble and
underwater noise
Considerably affected
Comparatively less affected
Effective application
Search in wide range
Finding of sea bottom
sediment
Finding of density of fish school.
Finding of status of fish school at sea
bottom
Specifications:
W: Irradiated diameter (m)
θ: Half angle of irradiation (˚)
L: Depth from transducer (m)
50 m
100 m
47 m
93
m
Water surface
Boat
Draft
Example
Transducer
50˚
W
L’
L
θ
W= (tanθ× L) × 2
L’ = L÷cosθ
Transducer
Depth (m)
0
10
20
30
40
50
60
70
80
90
100
50˚
17˚
50
Radius (m)
0
10
20
30
40
10
20
30
40
50

Dimensions CVS-872D
xiv 0092607062-01
Dimensions
Unit: mm (inch)

CVS-872D Specifications
0092607062-01 xv
Specifications
Item
Content
Model
CVS-872D
Output power (RMS)
3kW
Transducer
TDM-052A
TDM-062A
Output frequency
(Transducer)
38 to 75 kHz and 130 to 210 kHz
38 to 75 kHz and 85 to 135 kHz
Selectable frequency range
24 to 240kHz 0.1kHz step
Output method
Simultaneous / Alternate
TX rate
1500 times / minute at maximum (In case of single frequency. Range
2.5m and Interference rejection off.)
Pulse width
50μs to 3.0ms
Display size and type
12.1 inch color XGA LCD
Display resolution
1024x 768 pixels (XGA)
Basic range
1 to 3000 (m), 5 to 8000 (ft), 1 to 1700 (fm), 1 to 2000 (I.fm)
(8 ranges can be set to users choice)
Zoom range
1 to 260 (m), 5 to 960 (ft), 1 to 140 (fm), 1 to 180 (I.fm)
Range unit
m, ft, fm ,I,fm
Shift
Max 3000 (m), 6000 (ft), 100 (fm / I.fm)
Shift step
Selectable: Numerical value, Range ratio 1/5, Registered value (8
types), Shift digit input, Range dependent
Presentation modes
High frequency, Low frequency, 1 to 4 frequency, Zoom images
(Bottom lock, Bottom discrimination, Bottom Zoom, zoom, Bottom
follow zoom), Nav mode, Vertical split, Horizontal split, Mix (7types)
A-scope can be displayed at all above modes.
Presentation colors
64 colors, 16 colors, 8 colors, Monochrome
Background colors
Marine Blue, Blue, Dark blue, Black, White, Nighttime color, Other 4
colors
Alarms
Bottom, Fish, Temperature*, Speed**, Arrival**, XTE**
Image speed
12 steps & stop
Functions
Interference rejection, Color erase, VRM, Noise reduction, White line,
Draft correct, Water temperature correct, Boat speed correct, Store
image (500 images), Sona-ToneTM, Homing, Event memory, Simple
plotter, Panel illumination, Power reduction, External trigger, Detection
area display, CM key, Water Temp. graph, Individual range operation,
Individual shift operation, Heaving compensation, Display direction
Auto functions
Range, Shift, TVG, TX Power, White line
Function registration
A scope, Shift digit input, Interference rejection, Color erase, Nose
reduction, White line, Background color, TVG, VRM interval, Image
recall, Image swap, Image Title, Sona-ToneTM, Nav start, frequency,
Event Key Usage, Key Lock, Depth Unit, Color Tone, B.D. Mode
Language
English, Japanese, Korean and others
Input data format and
sentences
NMEA0183 Ver.1.5/2.0/3.0
GGA, GLL, HDT, MTW, MWV, MWD, RMC, VHW, VTG, ZDA
Output data format and
sentences
NMEA0183 Ver.2.0/3.0（DBT: Ver.1.5）
DBT, DPT, GGA ,GLL, HDT, MTW, MWV, RMC, TLL, VHW, VTG, ZDA
NMEA ports
Total 2: input and output.
Power supply
10.8 to 31.2 V DC
Power consumption
60 W or less (24V DC)

Specifications CVS-872D
xvi 0092607062-01
Environmental
Operating temperature
-15°C to +55°C
Water protection
IPX5
Store temperature
-30 °C to +70°C
Upper limit of humidity
93%±3％(+40°C)
Dimension of equipment
(without knob & pedestal)
320.7×320.7×144mm
Dimension of equipment
(with knob & pedestal)
330.6×364×180.5mm
Weight
9.1kg
*Requires data from Temp sensor or external Temp data input
**Requires data from GPS

CVS-872D Chapter 1 Installation
0092607062-01 1-1
Chapter 1 Installation
1.1 Installation precautions
In order to obtain the maximum performance of the echo sounder, this echo sounder should
be installed by a qualified engineer in charge of installation and maintenance. Installation
procedures include the following:
(1) Unpacking of components
(2) Inspection of composition units, spare parts, accessories and installation materials.
(3) Checking of supply voltage and current capacity
(4) Selection of location for installation
(5) Installation of CVS-872D Display unit and transducer
(6) Attachment of accessories
(7) Planning and implementation of cable laying and connection
(8) Coordination after installation
1.1.1 Unpacking of components
Unpack components and check that all the items correspond with the description of the
packing list. When a discrepancy or damage has been found, contact the dealer you
purchased or our sales company.
1.1.2 Appearance verification of each unit and accessories
Inspect the appearance of each components and accessories and check that no dents or
damages exist.
If any dents or damages exist and they are believed to be caused by accident during
transportation, contact the transportation and insurance company and consult our sales
company or our dealer nearest to you.
1.1.3 Selection of location for installation
In order to obtain the maximum performance of the unit, it is necessary to install in
consideration of matters described below:
(1) Install the equipment at a location in a bridge so that its display can be easily seen.
(2) Keep enough space for maintenance. Especially, secure enough space at the rear panel
where many cables are connected.
(3) Keep the equipment as far away from wireless transmitter/receivers as possible.

Chapter 1 Installation CVS-872D
1-2 0092607062-01
1.1.4 Laying and connection of cables
(1) Keep the transducer and power cable as far away from the cables of other electronic
equipment as possible.
(2) The cabinet of CVS-872D Display unit shall be securely grounded to the hull, using the
grounding terminal on the rear panel.
Caution: The ground side of power input of this equipment is connected to the ground
terminal.
In case of + (positive) ground, it cannot be used. The power may short-circuit.
(3) If you connect the power cable directly to the battery, interference from the other
electronic equipment is expected to be less. (See Fig. 1.1)
Fig. 1.1 Connection of Power line
1.1.5 Coordination after installation
Be sure to confirm the following points before starting up this equipment. The confirmation is
mandatory to operate the equipment normally:
(1) Is the power voltage in the boat within the appropriate voltage range? Is the current
capacity enough?
(Voltage range: 10.8 VDC to 31.2 VDC measured at the power connector.)
(2) Is the electric current capacity sufficient?
(Power consumption: 60 W)
(3) Is the wiring of transducer cable correct? Is the wiring shorted?
良い例 送受信表示機 送受信表示機
バッテリー バッテリー
ノイズ ノイズ
悪い例
Noise
Battery
Display unit
Good example
Bad example
Display unit
Battery
Noise
CVS-872D
CVS-872D