Humminbird 150SX User manual

Operations Manual

THANK YOU
Thank you for choosing Humminbird, America’s #1 name
in fishfinders. Humminbird has built its reputation by
designing and manufacturing top-quality, thoroughly
reliable marine equipment. Your Humminbird is designed
for trouble-free use in even the harshest marine
environment.
In the unlikely event that your Humminbird does require
repairs, we offer an exclusive Service Guarantee - free of
charge during the first year after purchase, and available at
a reasonable rate after the one-year period. Complete
details are included at the end of this manual.
We encourage you to read this operations manual carefully
in order to get full benefit from all the features and uses of
your Humminbird product. Also, to register your purchase
and help us learn more about you, please fill out the
warranty registration card at the back of this manual.
WARNING! This device should not be used as a
navigational aid to prevent collision, grounding,
boat damage, or personal injury. When the boat is
moving, water depth may change too quickly to
allow time for you to react. Always operate the boat
at very slow speeds if you suspect shallow water or
submerged objects.
WWW.HUMMINBIRD.COM

INSTALLATION PREPARATION . . . . . . . . . . . . . . . . . . . . . . . 2
Parts Supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . 2
Alternative Transducers and Mounting Methods. . . . . . 4
Transducer Exchange . . . . . . . . . . . . . . . . . . . . . . . . . 5
USING THE 150SX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
How Sonar Works . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Simulator Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 6
What You See On Screen . . . . . . . . . . . . . . . . . . . . . . 8
Control Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Menu Functions. . . . . . . . . . . . . . . . . . . . . . . . . 12
ADVANCED FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Using Diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
MAINTENANCE AND WARRANTY . . . . . . . . . . . . . . . . . . 22
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Customer Support . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
TABLE OF CONTENTS
Rev. 10522E

2
INSTALLATION PREPARATION
PARTS SUPPLIED
PARTS SUPPLIED
Before installing your 150SX, please ensure the following parts are included
in the box:
If any of these items is missing, contact your local distributor.
ACCESSORIES
Humminbird offers a wide assortment of accessories that complement and
expand the capability of your new 150SX. These accessories are designed
with the same high standards and are backed by the same one-year
warranty. The Humminbird Accessory catalog included with your unit
contains descriptions of the many accessories available and ordering
information. All Humminbird accessories are available through your full-
service Humminbird dealer or factory direct through our number listed in
the Customer Support section.
INSTALLATION OVERVIEW
The 150SX consists of two primary components to install: the control head
and the transducer.
The control head contains the sonar transmit and receive circuitry, as well
as the user controls and display. It should be installed in a location that
provides access to the controls and visibility while in use. The control head
mounts on a quick disconnect mounting system that swivels and tilts
providing flexibility for viewing from almost anywhere on the boat.
The transducer converts electrical energy from the transmitter into
mechanical pulses or sound waves. The transducer also receives the
reflected sound waves and converts them back into electrical signals for
display on the control head. It should be installed in contact with the
•150sx fish finder
•transducer with 20ft (6m) of cable
•transducer mounting hardware kit
•mounting system and mounting
hardware kit
•6 ft (2m) power cable
•operations manual
•installation sheet
•publications kit

3
INSTALLATION PREPARATION
INSTALLATION OVERVIEW
surface of the water in an area that has smooth water flow - usually on the
transom of the boat. There are several mounting options for the
transducer. Review the following section to determine the method that
works for you and your boat.
Determining How to Mount the Transducer
The 150SX includes a model XHS-6-24 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 the transducer
on the outside of the boat hull. This
technique produces the least signal loss,
and provides a way to adjust the
transducer after installation. The
mounting hardware included is designed
to protect both the boat and the
transducer should the boat strike debris
in the water or when trailering.
As an alternative to transom mounting, it is possible on many fiberglass-
hulled boats to glue the transducer on the inside of the boat hull. Since
fiberglass has similar sonar character-
istics as water, the sonar signal can
pass through the boat hull with
minimal loss. The hull of the boat
must be single layer construction
(not double-hulled). Also, any air
trapped in the lamination of the
fiberglass would prevent the sonar
signal from passing through.
Transom Mounted Transducer
Inside the Hull Mounted Transducer
For additional details reference the
TRANSDUCER INSTALLATION section of
the enclosed Installation Sheet.

4
Inside the hull installations require no holes be drilled into the boat and
through experimentation, high-speed operation comparable to transom
mounting can be achieved. Two part, slow cure epoxy is required to glue
the transducer in place.
ALTERNATE TRANSDUCERS AND MOUNTING METHODS
The 150SX 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
mounting methods are detailed below.
Portable Mounting
The standard transducer can be adapted for
portable installations using part number MHX-
PT2. This accessory adapts your transducer to a
suction cup mount for temporary installation on
the boat hull or other surface.
Trolling Motor Mounting
The standard transducer can also be adapted to
mount on most trolling motors using part
number AD-STM-7. This accessory includes a
bracket and hose clamp that allows mounting
the transducer to the body of most trolling
motors.
INSTALLATION PREPARATION
ALTERNATE TRANSDUCERS AND MOUNTING METHODS

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 costs. Refer to the Accessory cata-
log or call Customer Support for information.
BEGINNING INSTALLATION
Now that you have determined the transducer mounting method, you can
begin installation of the 150SX. The fold out installation guide included
provides detailed step by step instructions for installation of the control
head and transducer. For transom mount transducer installations, you will
need the mounting template at the back of this manual.
In addition to the parts included you need the following for installation and
operation:
•A powered hand drill and various drill bits
•Phillips and flat-head screw drivers
•A ruler or measuring tape
•Pen or pencil
•12 volt power source (your boat’s battery)
•A 1-amp fuse
•A fuse holder (if you are wiring directly to the boat’s battery)
•Silicone sealant (for sealing drilled holes)
•2-part, slow-cure epoxy (for inside the hull transducer installations)
INSTALLATION PREPARATION
TRANSDUCER EXCHANGE
5

USING THE 150SX
HOW SONAR WORKS
6
HOW SONAR WORKS
Your Humminbird unit uses sonar to
locate and define underwater objects,
define the bottom terrain, as well as
determine distance.
Sonar technology is based on sound
waves. Your Humminbird unit sends
out a sound wave signal. With this
signal it determines distance by
measuring the time between the
transmission of the sound wave and
when the sound wave is reflected off
an object. Your Humminbird uses the
reflected signal to interpret location,
size and composition of an object.
Sonar is very fast. A sound wave can travel from the surface to a depth of
240' (70m) and back again in less than ¹⁄₄ of a second. It is unlikely that
your boat can "outrun" this sonar signal.
The 150SX is a 200 kHz, single-beam fishfinder. The 200 kHz frequency
provides excellent sonar resolution (the ability to distinguish small returns
or returns which are close to the bottom), while providing depth
capabilities to 600’(185m). The shape of the sonar beam is symmetrical
and covers an area of approximately 24 degrees side to side and front
to rear.
Actual depth capability depends on factors such as bottom hardness, water
conditions, and transducer installation. Units will typically read to deeper
depths in fresh water than in salt water
SIMULATOR OPERATION
The 150SX contains a simulator that allows you to use the unit as if you are
on the water. The simulator is invaluable for learning how to operate the
150SX.

7
USING THE 150SX
SIMULATOR OPERATION
There are two ways to start the simulator. If
the unit is powered off, press and hold the
POWER button for approximately three
seconds until you hear a continuous chirp.
The simulator can also be started by
selecting the Simulator option on the start-
up screen after you power-up the unit.
When this screen is shown, simply press the DOWN ARROW until
“Simulator”is highlighted. When the screen times out, the unit will be in
simulator mode.
When in simulator operation, the 150SX responds to control inputs as if it
is in actual operation, so feel free to experiment, or to customize the unit
for your particular operation.
To exit Simulator mode, power the unit off.
When in simulator mode, the word “simulator” occasionally
scrolls across the display indicating the information on-screen is
not real sonar data.
FEATURE MEMORY
If your 150SX is installed with a transducer connected, any changes you
make to the set-up or User Options (see Control Functions) while in
Simulator are retained in the unit’s memory. This allows you to use
simulator to experiment with the various set-up options, and retain your
selected settings for normal operation.
If you are using the 150SX in Simulator when no transducer is connected,
any selected options are lost when the unit is powered off. The 150SX will
return to Factory Settings, or options selected when last used with a
transducer, if no transducer is connected.
IMPORTANT: A transducer must be connected to the 150SX in
order to retain user settings selected when in simulator mode. If
no transducer is detected, the unit defaults to pre-selected
options when powered off.

What You See On-Screen
Your 150SX uses a 128 V x 64 H matrix FSTN LCD display. This display
provides outstanding viewability in all light conditions over a wide range of
temperatures.
At initial power-up, the 150SX uses settings that were set at the factory.
After initial use, the 150SX will remember the settings you enter.
There are several elements on-screen that are common to all modes of
operation.
Depth. The digital depth number shows the water depth directly beneath
the transducer location.
Depth Range. The depth range is shown to the right of the screen. The upper
number is 0 indicating the surface of the water. The lower number is one of the nine
depth ranges available that best match the depth of the water. As the depth of the
water changes, the range changes as necessary in order to retain a bottom
representation on-screen.
When in Auto mode, the horizontal line at the top of the screen is the “zero line,”
representing the surface of the water. Occasionally there is a gap in this line. This gap
indicates the unit is updating the
display even if the bottom is not visible
on-screen, or if the bottom information
is not changing.
New sonar information appears on the
right side of the graphic area of the
display and moves to the left as new
information is displayed. The 150SX
automatically selects the appropriate
depth range to show the depth of
water beneath the transducer. This
range is selected so the bottom
representation is typically shown about
²⁄₃ down the display.
8
USING THE 150SX
WHAT YOU SEE ON-SCREEN
Water Depth
Bottom Depiction
Depth Range
Zero Line

Bottom. The graphic depiction of the bottom provides an effective tool
for understanding the composition of the bottom. If the bottom is hard
and smooth, the bottom depiction is narrow and dense. If the bottom is
soft mud or sand, the depiction will be thick and less dense. This indicates
much of the signal is absorbed by the soft bottom. If the bottom is rocky
or rugged in composition, the depiction is of varying density and textured
in appearance.
Wave action also affects the bottom
depiction. The information drawn is
a distance measurement, so if the
boat is moving up and down over flat
bottom, the bottom depiction often
appears in regular variations that
match wave timing.
Structure. Structure is defined as any
object physically attached to the
bottom. The sonar configuration of
the 150SX is optimized to give the
most accurate depiction of bottom
structure possible. Grass, trees,
stumps, wrecks or other debris are
accurately displayed, however the
depiction of these objects varies with
boat speed and direction. The best way to learn to interpret structure is to
operate the 150SX over a variety of known conditions and experiment with
user functions to best represent those conditions on-screen.
Surface Clutter. Surface clutter is the layer of water near the surface that
is rich in algae and other growth, and often is aerated by wind or wave
action. This area of water interferes with sonar transmission and often
appears on-screen as regular clusters of individual dots near the “0”line.
Thermoclines. Thermoclines are sharp differences in water temperature.
These are easily identified by the continuous nature of the return.
Second Returns. When a sonar signal is reflected off the bottom back to
9
USING THE 150SX
WHAT YOU SEE ON-SCREEN
Surface Clutter Rocky Bottom
Soft Bottom Hard Bottom

the transducer, there is often enough
energy left in the signal to be reflected
off the surface of the water back to the
bottom a second time. Second returns
appear as a slightly weaker bottom
representation exactly twice the depth
of the primary bottom return. The
second return is most likely to occur in
shallow water and in areas of relatively
hard bottom.
Fish ID. The 150SX uses advanced
signal processing to further evaluate any
sonar return between the surface and
the bottom. For instance, a small school
of bait fish usually appears as a dense
cluster of individual dots. If the return meets certain additional criteria, a fish
symbol will be assigned. There are three different size fish symbols used to
indicate the intensity of the sonar return. While signal intensity is a good
indicator of relative fish size, different species of fish have different sonar
characteristics, so it is not always possible to distinguish fish size between
varying species. The signal intensity is "normalized" for depth so that a
small fish close to the boat does not appear as a large fish symbol.
ID+ adds an additional piece of information to help the user locate fish. On
selected fish symbols, the digital depth of the designated fish is drawn to
help locate the fish vertically.
CONTROL FUNCTIONS
The 150SX uses a simple five button keypad for all user input. Press any button
and an audible “chirp”confirms the control input. If a button has no function
or is inappropriate for the situation, an audible “error”is heard. The unit sounds
multiple chirps.
Power. The Power button powers the 150SX up for normal operation. When
the unit is on, POWER turns the unit off. POWER can also be used to go directly
into Simulator mode. To enter simulator, with the unit powered off, press and
hold POWER for several seconds until a continuous chirp is heard.
10
USING THE 150SX
CONTROL FUNCTIONS
Thermocline Second Return

Light. LIGHT controls the unit’s display backlight. With
the unit powered on, press LIGHT once to turn the
backlight on “high.”Press LIGHT a second time to turn
the backlight on “low,”and a third time turns the
backlight off. The backlight is very effective for low-
light and nighttime operation. When the backlight is
on, the 150SX will consume more power than with the
backlight off. This is important when using the 150SX
in a portable configuration powered by a separate
battery, or when powering the unit from a trolling
motor battery.
When powering the unit from a battery such as in portable applications,
you can prolong the battery life by using the backlight at a minimum.
The three lower buttons, MENU, UP ARROW, and DOWN ARROW work
together to control the 150SX menu-controlled user functions.
Menu. MENU displays a menu on-screen
for adjustment. In normal operation,
pressing MENU repeatedly cycles through
all available menu headings. When a menu
heading displays, the full menu appears
after a short pause. A menu remains on-screen for several seconds, and can
be adjusted by using the ARROW keys. If no adjustment is made in the
allotted time, the menu disappears. If you want the menu to remain on-
screen longer press and hold MENU—the menu will remain on-screen
indefinitely. Once you release the menu button, the screen will time out.
Once a menu times out, it is still considered the active menu. Press MENU
to bring up the last menu used.
Arrow Keys. The UP ARROW and DOWN ARROW make adjustments to
menu functions. On the left side of every menu there are UP ARROW and
DOWN ARROW symbols.
The ARROW buttons often can be used when no menu is on-screen. In
these situations, pressing the ARROW button affects the function of the
active (last-used) menu. This is a short-cut to menu operation. The menu
appears on-screen while the adjustment is made and times out. A
11
USING THE 150SX
CONTROL FUNCTIONS
Menu Heading

12
frequently used menu can be adjusted very quickly using this technique.
After an adjustment is made to a menu function, the menu times out after
a few seconds and the unit returns to normal operation.
Menu Layout. All menus use the same basic layout. The heading at the
top describes the menu function. The UP ARROW and DOWN ARROW
symbols to the left of the menu indicate which buttons are available for
adjustment. In menus that have several possible settings, a range of
adjustment indicator shows the total range available and the current
setting.
Within the menu are the options available. The selected option or current
setting is highlighted in the black box. If no adjustment is made, this is the
selected setting. Press an ARROW button while the menu is displayed to
select another option.
Several of the menus are multi-step. In some situations if an adjustment is
made, additional options become available for further adjustment.
Examples of these multi-step menus are Depth Range, Depth Alarm and
Zoom. See the detailed description of each function for further
explanation.
Menu Functions
Sensitivity. The Sensitivity function controls the sensitivity of the sonar
receiver. The 150SX automatically adjusts the level of receiver sensitivity
based on a number of factors including the depth of the water and the
level of noise present. Noise can be caused by other electronic devices,
engines, trolling motors, propeller cavitation and hydrodynamic flow
among others.
The user has the option of adjusting the Sensitivity higher or lower based
USING THE 150SX
MENU FUNCTIONS
Heading
Up Arrow Option
Down Arrow Option
Arrow Symbols
Selected Setting
Range of Adjustment Indicator

13
on personal preference. You can select one of
11 sensitivity settings from -5 to +5. A setting of
0 (factory setting) has no effect on the auto-
matic sensitivity control. Increasing the
sensitivity (+1 through +5) enables the unit to
display the information from progressively smaller sonar returns. By
decreasing the sensitivity bias (-1 through -5), the unit effectively filters
small sonar returns.
In murky or muddy water, it is often helpful to reduce the sensitivity. This
prevents the display from being cluttered with sonar returns from debris or
suspended particles. In very clear or very deep water, it may be helpful to
increase the sensitivity since even the smallest sonar return may be of
interest to the user.
To adjust Sensitivity, press MENU repeatedly until the Sensitivity heading is
displayed. When the Sensitivity menu appears, use the UP ARROW to
increase the sensitivity, or the DOWN ARROW to reduce sensitivity. To
sequence through the available settings, press and hold either ARROW
button. Release the button at the setting you want to change.
After an adjustment is made, the menu disappears and the new sensitivity
setting is in affect.
Depth Range. The Depth Range function
controls the vertical distance displayed on
the graphic area of the display. There are
nine depth ranges available. The top of the
range is always 0, or the surface of the
water. Ranges of 0–15', 0–30', 0–60',
0–120', 0–180', 0–240', 0–360', 0–480',
and 0–600' are available. In the metric
version, ranges of 0–5, 0–10, 0–20, 0–40,
0–60, 0–80, 0–110, 0–150, and 0–185
meters are available.The range that positions the bottom depiction closest
to the bottom of the screen, will best utilize the available display resolution.
The 150SX automatically adjusts the depth range depending on the depth
of the water. The unit tries to maintain the bottom depiction about ²⁄₃
USING THE 150SX
MENU FUNCTIONS

down the total range (for example, in
20' (6m) of water, the 0-30' (0-10m)
range would be selected). This provides
the best display resolution and
therefore the best target separation
possible.
The Depth Range can be adjusted
manually. Press MENU repeatedly until
the Depth Range menu is visible. Two
options are available: Auto and
Manual.
The manual setting enables you to
adjust the current depth range setting.
The unit no longer adjusts the Depth
Range to the most appropriate range
for bottom display. Often, the bottom may not be visible on-screen. The
digital depth readout always determines the depth of the bottom, even if
it is not visible on-screen.
Using manual Depth Range control, you can view sonar information from
the area near the surface in great detail.
To return to automatic Depth Range control, press the MENU button until
the Depth Range menu appears on-screen and use the UP ARROW to
select AUTO.
Zoom. Zoom is similar to Depth Range because it
controls the range of information displayed on
screen. Zoom, however, allows selection of ranges
beneath the surface so any area of water between
the surface and the bottom can be enlarged to
provide more detailed information. By using the full
display to show a small area of coverage, the effective display resolution is
increased, and the unit’s ability to separate close targets is enhanced.
There are four Zoom ranges available: 7¹⁄₂' (2m), 15' (5m), 30' (10m), and 60'
14
USING THE 150SX
MENU FUNCTIONS
High Sensitivity Low Sensitivity
Sensitivity at “0”

15
USING THE 150SX
MENU FUNCTIONS
(20m). These ranges are not directly user controlled
but are instead dependent on the current depth
range. In shallow water, when the 15' (5m) or 30'
(10m) range is in use, the Zoom range is 7¹⁄₂ (2m). If
the 60' (20m) or 120' (40m) range is in use, the
Zoom range is 15' (5m), if a 180'-480'
(60-150m) depth range is in use, the
Zoom range is 30' (10m), and if the 600'
(185m) range is in use, the Zoom range is
60' (20m).
To enable ZOOM, press MENU
repeatedly until the Zoom heading is
displayed. When the Zoom menu
appears, use the DOWN ARROW to
select ON then use the DOWN ARROW
to select either AUTO or MANUAL.
While using Automatic Zoom, the depth
adjustment is controlled automatically,
allowing you to view the area immediately
above the bottom. This is especially useful if
you are looking for structure or minor variations in
terrain in areas of relatively flat bottom terrain. If
MANUAL is selected, The digital depth readout will
continue to track the bottom even when Zoom is
enabled.
If MANUAL Zoom is selected, use the DOWN ARROW
to select ADJUST, then use the UP and DOWN arrows to scroll through the available
Zoom Ranges.
To disable Zoom, press the MENU button until the Zoom menu is on-screen. Use
the UP ARROW to highlight Off, and let the menu
time out.
Depth Alarm. The 150SX contains an audible
alarm to warn you of shallow water depths. The

alarm is adjustable to depths of 3' (1m) to 99'
(30m). When the alarm is enabled, an audible
alarm sounds if the water beneath the boat is
equal to or less than the selected alarm depth.
The alarm sounds continuously for about five
seconds, and then intermittently to remind you
that you are still in shallow water.
Fish Alarm. The Fish Alarm alerts you to the
presence of fish, or other targets not connected
to the bottom. The Fish Alarm has three different
settings that correspond to the three different
size fish symbols shown on-screen.
The default setting is “OFF.”With the “Large fish
only”setting, the 150SX alarms on only those
targets that are represented by the large fish
symbols. The 150SX can be set to alarm on only
large and medium fish, or set to alarm on all fish.
Once the Fish Alarm is enabled, the 150SX emits
an audible beep when the
selected size fish symbol appears
on-screen.
Options. The Options Menu is a
series of linked menu functions used initially to
set your preferences. Once your preferences are
selected, it is unlikely these functions need to be
accessed during the normal operation of the
product.
The Options menu works differently than other
menu functions in that all of the options must
be cycled through in order to return to normal
operation. There are eleven Option menus:
Contrast, Display Speed, Battery Alarm, Bottom Black, Fish ID, Numeral Size,
Diagnostic, Units, Languages, Depth Offset, Reset.
16
USING THE 150SX
MENU FUNCTIONS
Set for large fish only
Set for large and medium fish
Set for all fish

17
USING THE 150SX
MENU FUNCTIONS
Contrast. The Contrast function allows the user to
control the level of contrast of the LCD display. The
150SX will automatically adjust the display contrast
to compensate for changing ambient temperatures;
however, some situations may occur where manual
adjustment will provide a higher level of contrast.
Eleven contrast settings, +5 to -5, are possible. The
display contrast will change as the adjustment is made so the optimum
level of contrast can be achieved. Use the ARROW buttons to highlight the
desired selection. The 150SX will reset to the factory setting when the unit
is powered off.
Display Speed. Display Speed controls the
rate at which the graphic information
moves across the display. There are 5
possible speeds; the fastest rate (5) is the
factory setting. Keep in mind that the
closer the update rate matches your boat
speed, the more accurate is the graphic
depiction of the terrain beneath your boat.
Use the UP and DOWN ARROWS to select
the desired update rate. The Display Speed
setting is remembered when the unit is powered off.
Battery Alarm. The Battery Alarm Option
allows you to select the voltage level at
which the Battery Alarm activates.
At the Battery Alarm menu (under options),
you will note that the default setting is OFF.
Push the DOWN ARROW BUTTON to select
the feature ON. Push the DOWN ARROW
BUTTON again to move into the ADJUST BATTERY ALARM setting. Using
the UP and DOWN ARROW BUTTONS, select a voltage between 9.0 and
12.0.
When the voltage drops below your selected voltage, an audible alarm will

sound, and a battery alarm icon will be displayed on screen with current
voltage level.
Bottom Black. There are two selections
available: OFF and ON. The factory
setting is OFF. With this setting, the
150SX displays the bottom using
Structure ID. This allows you to determine
the texture and relative hardness of the
bottom. Selecting Bottom Black “ON”
causes the unit to blacken in the display
below the bottom. This gives the user
easiest recognition of the bottom
location, even
from a great
distance.
The 150SX
remembers the
Bottom Black
setting when
powered off.
Fish ID.
ID+ ON enables
the 150SX to
interpret the raw sonar data and, using a variety of
techniques, depict appropriate target returns as
one of three different size fish symbols. The 150SX
also displays the depth beneath the surface with
the corresponding fish symbol.
Selecting Adjust and making incremental changes
enhances the fishfinder’s ability to identify sonar
returns as fish symbols.
18
USING THE 150SX
MENU FUNCTIONS
Bottom Black View
Raw Sonar ID+ On