INSTALLATION PREPARATION
INSTALLATION OVERVIEW
Determining How to Mount the Transducer
Your Humminbird fishfinder includes a standard
transducer. This transducer can be mounted on the
transom of the boat or bonded to the inside of a fiberglass
hull boat.
The transom installation, which is the most widely used,
places
techni
way to
mount
the bo
the wa
e on
r on
milar
n
ull
on
m
ed
eed
operature
epoxy
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INSTALLATION PREPARATION
ALTERNATE MOUNTING METHODS
ALTERNATE TRANSDUCERS AND MOUNTING METHODS
Your Humminbird fishfinder comes with everything necessary for installation and
operation on most boats. However, there are several situations which may
require a different type of transducer. Inboard boats, wood or metal hulls, and sail
boats create unique transducer mounting needs Alternate transducers and
mount
Porta
The st
installa
Humm
suctio
or othe
Trollin
The st
most t
acces
mount
Thru-
Thru-h
of the
turbule
hulls t
materi
sonar
Thru-hr
with tho
perform this type of installation, it is best to refer to a qualified marine technician.
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INSTALLATION PREPARATION
TRANSDUCER EXCHANGE
TRANSDUCER EXCHANGE
Other transducers are available as replacements for the standard transducer.
You may exchange your new and unassembled transducer for another type by
returning it to the address listed in Customer Support. Some transducers may
have additional cost. Refer to the Accessory catalog or call Customer Support for
inform
BEGI
Now th
installaon
the neof
the coou
will ne
In add
operat
·
·
·
·
·
·
·
·
·
A p
Ph
A r
Pe
12
A 1
A f
Sil
2-p
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INSTALLATION
TRANSOM INSTALLATION
Do not begin this transducer installation until you read the Installation
Preparation in the Operation Guide. This chapter contains information
critical to the correct installation of your transducer.
Due to the wide variety of boat hulls, only general instructions are
presented in the installation guide. Each boat hull represents a unique set
of req
TRAN
Step O
Begin
trans
the b
·
·
It is
rel
wa
the
co
riv
the
bo
pro
If p
mo
wa
is t
loc
is s
·
·
The transducer when mounted should point straight down.
The design of the transducer will accommodate a wide range
of deadrises and remain ported straight down (Figure 2).
On boats with stepped hulls, it may be possible to mount the transducer on
the step. Never mount the transducer on the transom behind a step, as this
area of the transom will not be in contact with the water at high speed (Figure
3).
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INSTALLATION
TRANSOM INSTALLATION
·
If the propeller(s) is (are) forward of the transom, it may be impossible to find
an area clear from turbulence, and a different mounting technique or
transducer type should be considered.
Step Two - Drill the Mounting Holes
1. Re
2. Ho
trag
the
of
3. Us
sh
dri
4. Us
ap
sta
to
co
Step T
1. Att
5,
the
loc
Note:
betwe
washe
ears.
2. Using the AIlen wrenches provided, loosely tighten the pivot
screw (Figure 6). Do not completely tighten the assembly at
this time, so the pivot angle can be adjusted later.
3. Insert the pivot/transducer assembly into the mounting
bracket as shown in Figure 7. Do not snap the assembly
closed.
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INSTALLATION
TRANSOM INSTALLATION
Step Four - Mount the Transducer to the Transom
1. Apply silicone sealant to the mounting holes drilled into the transom.
2. Align the transducer assembly with the drilled holes in the transom (Figure 8).
3. Use either a flat head screwdriver, a 5/16" (8mm) hex driver, or a 5/16" (8mm)
so
(25
as
mo
Sn
Step F
The br
allow a
descri
be nec
1. Fir
len
piv
(6m
2. Fu
It m
init
wa
3. Ad
tra
tra
bracket on the transom with a pencil.
4. Force the pivot to the up position to gain access to the
mounting screws. Assure the transducer location has not
changed, then fully tighten the two mounting screws (Figure
11). Snap the pivot back down.
Confirm the pivot angle has not changed.
Note: A third screw location is provided for the
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INSTALLATION
TRANSOM INSTALLATION
Step Six - Route the Cable
There are several ways to route the transducer cable to the to the area where the
control head will be installed. The most common procedure routes the cable
through the transom into the boat.
Inside
wiring
the tra
Route
cables
interfe
If the c
the tra
Custo
Follow
1. Dri
ca
2. Fill
3. Pla
(16
4. Se
5/8
Note:
enouge to
the si
transd
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INSTALLATION
INSIDE THE HULL INSTALLATION
INSIDE THE HULL INSTALLATION
Inside the hull installation requires the mount system and control
head be installed and operational. See Installing the Control Head
for instruction on installing the unit.
Inside
thickn
depth
hull of
depen
This in
silicon
materi
a tend
Step O
Begin
hull to
best lo
·
Ob
mo
pro
·
As
an
loc
Step T
There is no opportunity for adjustment after the transducer glued
in place. Therefore, it is best to perform a trial installation on inside the hull
transducers first, and run the boat at high speeds to determine the best mounting
area.
1. At the identified mounting location, lay the transducer body face down with
the pointed end towards the bow.
2. Fill the hull with enough water to submerge the transducer body. Use a sand
filled bag or other heavy object to hold the transducer in position.
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INSTALLATION
INSIDE THE HULL INSTALLATION
3. Power up the Control Head.
4. Run the boat at various speeds and water depths while observing the screen
on the Control Head. If the unit functions well at low speeds but begins to skip
or miss the bottom at higher speeds, the transducer needs to be moved. If
depth performance is required, test the fishfinder in water at the desired
de
ac
Step T
1. On
tra
2. Re
mo
ne
su
En
3. Mi
tho
4. Co
16
5. Pre
pu
of
Note:
transd
6. Weight the transducer so it does not move while the epoxy is curing.
When the epoxy cures, no water is necessary inside the hull. Neither water,
spilled gasoline, or oil will affect the performance of the transducer.
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INSTALLATION
CONTROL HEAD INSTALLATION
CONTROL HEAD INSTALLATION
Step One - Determine Where to Mount
Begin the installation by determining where to mount the control head. Consider
the following to determine best location:
·
Thble)
sh
ca
·
Th
ho
or
do
ho
fish
a h
co
·
·
Th
pro
an
Th
piv
(Fi
Step T
A 6’ (2
fishfind
multi-s
CAUTION: Some boats have 24 or 36 volt electric systems. Be
sure your unit is connected to a 12 VDC power supply.
The Power can be connected to the boat's electrical system at two
places: a fuse panel, usually located near the console, or directly to the battery.
If a fuse terminal is available, use crimp-on type electrical connectors (not
included) that match the terminal on the fuse panel. Attach the black wire to
ground, and the red wire to 12 VDC power (Figure 20). Be sure to use a one amp
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INSTALLATION
CONTROL HEAD INSTALLATION
and one amp fuse (not included) for the protection of the unit (Figure 21).
Humminbird is not responsible for over voltage or over current failures.
In order to minimize the potential for interference with other
marine electronics a separate power source (such as a
second battery) may be necessary.
Step T
1. Se
sur
pe
2. Se
mo
Step F
1. If t
mo
ce
Note:
surfac
that lo
under
rear o
(Figur
2. Ins
the
3. Pa
und
in place around the cables and into the 1” (25mm) hole.
4. Pass the cables through the mounting base, out the top of
the mounting bracket.
5. Place the mounting bracket on the mounting surface aligned with the drilled
holes. Insert the four flathead wood screws into the mounting holes and
tighten fully (Figure 23).
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INSTALLATION
CONTROL HEAD INSTALLATION
Step Five - Assembling the Connector Holder
1. Insert the cable connectors into the connector holder.
The cable connectors are labeled, and there are
corresponding labels on the connector holder (Figure
26). The slots for the connectors are keyed to prevent
rev
the
2. Ca
mo
mo
(Fi
3. Sn
ho
4. Ins
#6
bra
5. Ins
bra
de
29
Your
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INSTALLATION
TEST THE INSTALLATION
TEST THE INSTALLATION
Testing should be performed with the boat in the water, however you can initially
confirm basic operation with the boat trailered.
Press POWER once to turn the unit on. There will be an audible chirp when any
button
ensure
The fir
Diagn
connege
will ind
out.
Note: er
detec
If a tra
unless mer
reache
sonar
If the bg
proper
capabnar
signal
If the u
speed or
miss to
the ap
Note:
adjustments before optimum high-speed performance is achieved.
Important: For Transom Mount transducer installations, install the third mounting
screw after the final transducer adjustments.
Humminbird · 3 Humminbird Lane · Eufaula, Alabama 36027
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Mounting the LCR 120
Before mounting the LCR 120, gather the parts you need: LCR 120, mounting hardware
j\kit power cable, and sensor cable. If the sensor cable is not long enough for your installation,
see “Accessories” earlier in this manual for information on the EC-6 10’ extension cable Next,
consider where to mount the LCR 120. The gimbal mounting bracket offers mounting capabilities
for the top of a shelf or the bulkhead (and lets you tilt the unit forward and backward for ease of
viewing and operation.) To choose the best location, consider the following.
·
·
·
he
der.
is
·
and
the
After with
the in
1.
2.
3.
4.
5.
6. Note
7. : Be
8.
Moun
ith
an in-lin
preceding page. Do not connect directly to the batter without a fuse. Attach the black lead to the
negative (-) terminal, and wire the red lead through the fuse to the positive (+) terminal.
NOTE: Do not use any power cable other than the one provided with your LCR120.
Section 3: Testing the Installation
After installing your LCR 120, sensor, and cables, you should test the installation.
Testing should be performed on the water since that is the only way to check your sensor’s
performance.
With your boat at idle, press the POWER button to turn the unit on. The LCR 120
performs a self-test on its electronics, then automatically selects the right depth range and
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sensitivity level for conditions. Momentarily, you’ll see the reading start to “March” across the
screen from right to left.
Increase your boat speed to ensure that you get a continuous bottom reading as the boat
moves. Your LCR 120 and its sensor are designed to operate at up to 75 mph, so feel free to test
them at very high speeds.
If the LCR 120 performs well at idle or slow speeds, but the display is not continuous at
higher speeds, the sensor is not installed properly. Air bubbles or turbulence from the boat hull
are passing across the sensor face, blocking the transmitting signal. By following the instructions
in “Mounting the Sensor,” you can make simple adjustments that should fix the problem.
NOTE: If other problems occur, see “Troubleshooting” later in this manual for tips from the
Hummingbird engineers. If you don’t find the solution there, call out Customer Service Hotline.
Sectio
nt
panel cuse
the LCR
use to
practice e
followed ized
accordi
Using
equipme
controls
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The unit must be turned off before you start the simulator. To activate it, press down and
hold the POWER button until a chirping sound begins. Release the button, and the built-in
simulator begins displaying the typical LCR 120 a typical LCR 120 reading.
You can use the simulator to learn the functions explained in the following pages, just as
if you were getting actual on-the-water readings (but not that “Sensitivity” is disables). To turn off
the simulator, turn off the unit by pressing the POWER button again.
Of course, the best way to learn the LCR 120 is with actual use, especially in familiar
waters. If you know what’s below and see it on-screen, you’ll quickly become an LCR 120 expert.
LCR 120 Functions
The LCR 120 offers several functions that you can adjust with the front panel buttons.
(Note thchirp”
sound.)
simulat
unit
off. Wh
simulat
to
restart t
nt:
·
·
·
·
·
·
·
·
·
·
To adju
display ng,
you sho
ween
grass o
LCR 120 Functions
After you adjust any function, the display returns to its full-screen reading. IF the menu
doesn’t stay on the screen long enough, press the STOP button to hold the menu on the screen.
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Units
2. Selecting Units;
Factory Setting: MPH/SM
Sensi
3.
The LCR 120 automatically adjusts to the proper amount of sensitivity for conditions (i.e.
depth). You can bias the setting + or –5 levels to suit your personal taste. Increasing the
sensitivity targets and the thermoclines, which might not be displayed at the +0 setting.
If you want to manually adjust Sensitivity, select SENS and press the Up or Down arrow
button to adjust the display.
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Bottom Alarm
4. Enabling Bottom Alarm;
Factory Setting: Off
e it,
select B
Down a
shallowu
maintai
Fish A
5.
The Fish Alarm alerts you with a chirping sound whenever the LCR 120
detects fish (or another object not attached to the bottom). To activate it,
select FISH ALARM and press the ON-OFF button.
Initially, the fish alarm will sound when any target not attached to the bottom is
detected. The word “ALL” is displayed on the menu and two fish are shown on the lower
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part of the display. By pressing either arrow button, the word “LARGE” appears on the
display and the alarm will only sound when a large target is detected. A single fish
symbol is shown on the bottom of the display to represent that large fish only is selected.
While there is some variation in sonar characteristics of different species, typically the
strength of the return is relative to the size of the fish.
Zoom
6. Using Zoom Range;
Factory Setting: Off
ace;
he
se
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Display Speed
8. Setting Display Speed;
Factory Setting: One Level Below Maximum
u
n
s,
Depth
9.
When you turn the LCR 120 on, it finds the bottom \, sets the ideal Depth
Range, and automatically adjusts the Depth Range (to as much as 120’)
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as the depth changes. In this “Auto Depth Range” mode, the bottom is
blacked-in for easy-to-understand readings.
If you prefer, you can turn Auto Depth Range off. Select DEPTH
RANGE, press ON-OFF, and adjust the Depth Range with the Up or Down
arrow button.
In this “Manual Depth Range” mode, the bottom is not blacked in.
This lets you see a “second return,” which is preferred by some fisherman
because the width of the second echo can indicate bottom hardness.
Trip Log
10
the
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