Plastimo ECHOFISH 820 User manual

Installation
& operation manual
Dual-frequency
fishfinder
ECHOFISH 820
Other languages
available on CD

Echofish 820 –Installation & Operation manual
2
Introduction
Thank you for choosing our Echofish 820 fishfinder and welcome to
the innovations of 3/$67,02. We have been committed
to fishfinder R&D activities and our products have been reputed for
their cutting-edge technologies and reliable performances.
Your fishfinder is a high-quality sonar designed for both professional
and novice fisherman in a variety of water areas and conditions. This
product benefits from 1 year warranty against any damages induced
by non-human factors. Damages which could happen out-of-
warranty will be handled with reasonable charges based on concrete
situations. For details regarding maintenance service, please refer to
the warranty section at the end of this manual.
To familiarize yourself better with the product’s operations and, in
order maximize its use, we invite you to read this manual carefully.
Please read the transducer and sonar unit mounting step by step to
benefit from the optimum performances of your instrument. An in-
correct installation, especially the transducer one, could make your
sonar unit works abnormally or not work at all.
For any possible problems you may face during the operation, please
refer to the Trouble Shooting section.
Except as expressly provided herein, no part of this manual may
be copied, reproduced, republished, transmitted or distributed for
any
purpose, without prior written consent of 3/$67,02
3/$67,02 may find it necessary to change or end RXUSROLFLHV
regulations and special offers at any time. We reVHUYHWKH
right to change or improve its products and to make FKDQJHVLQ
the
content without obligation to notify any perVRQRU
organization.
For current updates or any other information, please visit our web-
site or contact us at:
www.SODVWLPR.com
PLASTIMO – Lorient-France
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Echofish 820 –Installation & Operation manual
3
Table of contents
Understanding sonar ........................................................... 4
No-skipping detection ......................................................... 5
Dual Beam Sonar................................................................. 6
What’s in the box ? ............................................................. 6
Transducer installation
1. Transom installation ................................................ 7
2. Shoot-thru-hull transducer installation....................... 12
Sonar unit installation ......................................................... 15
Operation Instruction
Understanding the Fishfinder screen ............................... 18
Real time sonar window................................................. 19
Keyboard instruction ..................................................... 20
Data interface .............................................................. 21
Menu Operations
Chart speed .......................................................... 22
Noise Filter ........................................................... 22
Color line.............................................................. 24
Sensitivity ............................................................ 25
Fish ID. Sens ........................................................ 25
Water type .......................................................... 26
Frequency ........................................................... 27
TCG Control .......................................................... 28
Depth Range......................................................... 29
Zoom Range ......................................................... 30
Backlight .............................................................. 31
Echostyle.............................................................. 32
Keel offset ............................................................ 33
Beeper ................................................................. 34
Simulator ............................................................. 35
Languages ............................................................ 36
System info .......................................................... 36
Load default.......................................................... 37
Temperature units ................................................. 37
Depth units........................................................... 38
Fish ID alarm ........................................................ 38
Shallow ................................................................ 39
Battery................................................................. 40
Trouble Shooting................................................................. 41
Maintenance........................................................................ 43
Storage ............................................................................... 44
Guarantee Conditions ......................................................... 44
Specifications and features................................................. 45

Echofish 820 –Installation & Operation manual
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UNDERSTANDING SONAR
If you are familiar with the manipulation of a sonar, please
skip to the next section. However, if you have never owned
any sonar fishfinder yet, this section will teach you the basic
theory about sonar.
Based on the sonar technology, the Echofish 820 fish-
finder can detect the underwater conditions, including
fish presence or bottom structure. The transducer sends a
sound wave signal into the water in a cone shape. At the
source, the wave is narrow; however as it penetrates
deeper, the sound wave spreads forming a cone (i.e
flashlight). The sound wave bounces back to the transduc-
er when it strikes any object. The object can be a fish, the
structure, the bottom or any other object with a different
density from the water.
The transducer amplifies the return signal and sends it
back to the fishfinder . By measuring the time between the
sound wave transmission and its bounce, the fishfinder can
calculate the distance thanks to the inner microproces-
sor. T h e fishfinder displays the information on the screen
for your interpretation.

Echofish 820 –Installation & Operation manual
5
No Skipping Detection
Your fishfinder integrates a high detecting technology. Real-
ly precise, it enables a “No-skipping detection”.
When the sonar works, it continually samples the echo at
same interval (for your fishfinder, it is 0.06 ms). T he
continuous signals form different sampling points. The
shorter the distance between 2 sampling points is, the more
precise your f ishf ind er is. Even small size objects can be
detected.

Echofish 820 –Installation & Operation manual
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Dual beam sonar
The Echofish 820 adopts a 200/50 kHz Dual beam sonar
system. With the Dual beam sonar setting, you can use the
narrow 12°beam to penetrate the deep bottom while you are
still being able to use the wide 35° beam for a wide detection.
What’s in the box ?
Please do not start the installation of your fishfinder be-
fore reading the instructions carefully. This manual con-
tains critical information to install your fishfinder correctly .
F or any problems you m a y f a c e during the installa-
tion, please contact your local dealer for assistance.
Before a n y i n s t a l l a t i o n , please check the p acking list
below and make sure you are not missing any items:

Echofish 820 –Installation & Operation manual
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A- Display unit
B- Bracket
C- Transducer
D- Pivot
E- Template
F- Locking bolt
G- Pivotbolt
H- Pivot nut
I- 4x15mm screws
J- 3x20mm screws
Transducer installation
1. Transom installation
1.1 Select the mounting location
When choosing the transducer mounting location, do not
forget to consider the flowing as well. The sonar transmis-
sion / reception can be affected severely in turbulent waters.
Never mount the transducer behind rows of rivet, water in-
take, discharge port, propeller area, etc. These areas can
create turbulences when the boat moves a t a high speed.
1.2 Mark the location and drill the mounting holes
Make sure the boat is flush and parallel with the water sur-
face.
Hold the template against the transom of the boat, mark

Echofish 820 –Installation & Operation manual
8
Wrong
Right
two holes in both slots. The center of both holes must be
parallel with water surface. Make sure the distance between
the bottom of the template and the lower edge of the tran-
som is about 0~5mm.
Using a 5/32” bit, drill 2 holes of 1” (25mm) deep approx-
imately at the marked location. Be careful not to drill deeper
than 1”.
1.3 Assemble the transducer
Slightly spread the pivot and match the transducer to the pi-
vot. The toothed surface makes them not separate easily.
Put the locking nut into the slot of the pivot, insert the pivot
bolt and hand-tighten.
Note: Do not overtighten the pivot-bolt with an Allen wrench; oth-
erwise you will not be able to adjust the angle of the transducer.
Note: Do not push the pivot into the bracket.

Echofish 820 –Installation & Operation manual
9
1.4 Transducer installation
a- Apply marine sealant to the 4 x 15mm screws and the
two holes on transom. Hold the bracket against the transom
again, slightly tightens the template by two 4 x 15mm
screws.
Note: Do not overtighten; otherwise you will not be able to adjust
the transducer.
b- Adjust the template to make it roughly vertical to the wa-
ter surface. T ighten the two screws with an Allen wrench.
c- Press the pivot into the bracket and rotate the transducer
to make it parallel with the water surface.
Note: The pivot matches the transducer by ratchets. Incline is 12
degree. In some situations, you may find it impossible to adjust the
transducer completely parallel with the water surface. In this
situation a slight incline (1~5degree) is acceptable.
1.5 Routing the cable
You can choose to route the transducer through or over the
transom. If through the transom, please follow the next
steps:
a- Hold one cable clamp at approximately 1/4 distance
f rom the top of transom to the transducer. Mark the posi-
tion with a pencil. Using a 1/8” bit, drill two holes o f
approximately 3/8” (10mm) deep.

Echofish 820 –Installation & Operation manual
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b- Apply some marine sealant to the hole and tighten the
cable clamp with two screws.
c- If more than one cable clamp is needed, repeat step a)
and b).
Note: make sure the cable between the transducer and the first
clamp is not tightened. Otherwise the transducer cable can be easily
damaged when adjusting the transducer. To avoid this situation,
please rotate the transducer to the utmost position before tightening
the first cable clamp.
d) When routing the transducer cable to the sonar unit, avoid
enwinding the transducer cable with other electrical wires or
some electrical devices that may cause interference.
1.6 Initial installation test
To get the best transducer installation, we suggest you to
test the initial installation and to adjust the transducer ac-
cording to the test outcome.
Before testing, please make sure the installation is finished: the
transducer cable must be correctly connected to t he dis-
play unit. Make sure the distance between the transducer
and bottom is not beyond the depth of your fishfinder’s ca-
pacity.
a- Power up the display unit and check whether there is sonar
information on the screen. If so, it means the display unit is
correctly connected to the transducer. If not, please check
the connection between the display unit and the transducer.
The template touchs the
transducer