Operation Instructions
Fish-finding & Depth Sounding Sonars
X125, X126DF, X135, X136DF
Copyright 2003 Lowrance Electronics, Inc All rights reserved
Sec. 2 Installation & Accessories
Speed/Temperature Sensors
Sec. 4 Sonar Options & Other Features
Sec. 3 Basic Sonar Operation
Sec. 5 Sonar Troubleshooting
Sec. 6 Supplemental Material
Section 1 Read Me First
How this manual can get you out on the water, fast
Capabilities and Specifications X125, X126DF, X135, X136DF General
X136DF and
X126DF and
Back-up memory
How Sonar Works
How to use this manual typographical conventions
Menu Commands
Arrow Keys
Keyboard
Instructions = Menu Sequences
Page
Preparations
Section Installation & Accessories
Transducer Installation
Recommended Tools and supplies
Selecting a Transducer Location
Align transducer centerline with hull bottom
How low should you go?
Good and poor transducer locations
1. Assembling the bracket
TRANSOM TRANSDUCER ASSEMBLY AND MOUNTING
Shoot-thru-hull vs. Transom Mounting
Insert and align ratchets
Align plastic ratchets in bracket
Alignment letters Alignment positions Transducer Transducer bracket
Insert bolt and check transducer position on transom
2. Aligning the transducer on the transom
Add ratchets to bracket and transducer
3. Assembling the transducer
Transom Transom
4. Drilling mounting holes
5. Attaching transducer to transom
Bottom of hull
Flat-bottom hull
Deep-vee hull
Align transducer centerline with hull bottom and attach transducer to
Transducer mounted on trolling motor, side view
TROLLING MOTOR BRACKET INSTALLATION single-frequency only
Attach motor mounting bracket to transducer
TRANSDUCER ORIENTATION AND FISH ARCHES
SHOOT-THRU-HULL PREPARATION
Partial fish arches
Transducer aimed
Fill with polyester resin
Flotation material
Inner hull
Epoxy to hull first
Shoot-thru-hull Installation
Epoxy transducer to hull
Speed/Temperature Sensors
Sensor Chart
Two-temperature sensor installation MY-4X Cable
Three-temperature sensor installation
Three-temperature sensor installation with speed
Optional Speed Sensor Installation
Stern view showing good location for mounting sensor on transom
Power Connections
Optional power off switch for saltwater installations To unit
Black wire
Red wire with
battery
Mounting the Unit Bracket, In-Dash or Portable
Sonar unit cable connections
Bracket Installation
Front
Front view left and side view right showing dimensions of the
sonar unit when mounted on gimbal bracket
72.9 2.87
173.9
In-Dash Installation
Portable Installation
In-Dash
Template4.46
Face Cover
D cell battery
Page
Section 3 Basic Sonar Operation
Keyboard
Main Menu
Power/lights on and off
Menus
Main Menu Commands
Main Menu
Sonar Menu
Pages
Surface signal
Sonar chart display options from left digital data and FlashGraf
Basic Sonar Quick Reference
Sonar Operations
To adjust sensitivity
Fish Symbols vs. Full Sonar Chart
Important Tip
Other Free Training Aids
Free training emulator is available for your unit on our web site
To change the ASP level
Section 4 Sonar Options & Other Features
ASP Advanced Signal Processing
Alarms
Depth Alarms
To adjust and turn on the zone alarm
Zone Alarm
To adjust and turn on the deep alarm
Calibrate Speed
Fish Alarm
Brightness
Chart Speed
Contrast
Depth Cursor
Depth Range - Automatic
Cursor line
Depth Range - Manual
Depth Range - Upper and Lower Limits
To change the upper and lower limits
EXITEXITEXIT Fish arches Area zoomed
To turn off upper and lower limits
Fish I.D. Fish Symbols & Depths
FasTrack
You may see fish symbols on the screen when actually, there are no fish. The reverse is also true. The illustrations on the next page show how Fish I.D. can actually miss fish that are present
To turn the Fish I.D. feature on
FishTrack
FishReveal
To turn on FishTrack
To turn FishReveal on
Fish not visible Visible Fishfish arch Fish arches
To change the frequency setting to 50 kHz
Frequency Change Transducer Frequency X126DF and X136DF only
Grayline
To change the frequency setting to 200 kHz
To adjust the Grayline level
Fig. 1A Fig. 2A Fig. 3A
Fig. 1B
Hard
Fish near
Overlay Data
HyperScroll
Noise Rejection
To turn off displayed data
To change displayed data font size
Ping Speed & HyperScroll
To change Ping Speed
To turn off HyperScroll
To adjust Sensitivity
Pop-up Help
Screen Contrast and Brightness
Reset Options
Reset Water Distance
Sensitivity & Auto Sensitivity
To adjust sensitivity in auto mode
Automatic Sensitivity
To turn Auto Sensitivity back on
To adjust sensitivity in manual mode
Set Keel Offset
Set Language
Software Version Information
To change the chart mode color scheme
Sonar Chart Mode
Sonar Chart Display Options
Full Sonar Chart
Split Zoom Sonar Chart
Split Frequency Sonar Chart X126DF and X136DF only
Digital Data/Chart
To adjust sensitivity in auto mode
The Split Frequency Sonar Chart page allows you to adjust
Digital Data/Chart
1. From the Sonar Page in Digital Data mode, press MENU↓ to
Sonar Simulator
FlashGraf
Surface Clarity
Stop Chart
To adjust the Surface Clarity level
Transducer Type X126DF and X136DF only
Units of Measure
Upper and Lower Limits
Zoom & Zoom Bar
To set Speed/Distance Unit of Measure Press ↑ or ↓ to change the
Right, same view zoomed to
Zoom Pan
At left, Sonar Page, normal view. Center, same view zoomed to
Page
Section Sonar Troubleshooting
Weak bottom echo, digital readings erratic, or no fish signals
Unit wont turn on
Unit freezes, locks up, or operates erratically
No fish arches when the Fish I.D. feature is off
NOISE
Page
Page
Index
Page
LOWRANCE ELECTRONICS 12000 E. SKELLY DRIVE, TULSA, OK 800
LOWRANCE ELECTRONICS FULL ONE-YEAR WARRANTY
Section 6 Supplemental Material
How to Obtain Service…
…in the USA
…in Canada
…outside Canada and the USA
Accessory Ordering Information for all countries
Shipping Information
Visit our web site
Lowrance Pub
Copyright
All Rights Reserved
