i
Table of Contents
Sec. 1: Read Me First! ...............................................................1
Capabilities and Specifications: X125, X126DF, X135, X136DF..2
How Sonar Works.........................................................................3
How to Use this Manual: Typographical Conventions................4
Sec. 2: Installation & Accessories..........................................7
Preparations..................................................................................7
Transducer Installation................................................................7
Recommended Tools and Supplies...........................................8
Selecting a Transducer Location..................................................8
How Low Should You Go?.........................................................9
Shoot-Thru-Hull vs. Transom Mounting...................................10
Transom Transducer Assembly and Mounting.........................10
Trolling Motor Bracket Installation (Single-Frequency only)..16
Transducer Orientation and Fish Arches..................................17
Shoot-Thru-Hull Preparation and Installation.........................17
Speed/Temperature Sensors.................................................20
Sensor Chart...............................................................................21
Optional Speed Sensor Installation.......................................22
Power Connections......................................................................23
Mounting the Unit: Bracket, In-Dash or Portable....................25
Face Cover...................................................................................29
Sec. 3: Basic Sonar Operation...............................................31
Keyboard.....................................................................................31
Power/Lights (Turn Unit On and Off) .......................................32
Menus..........................................................................................32
Main Menu..............................................................................32
Sonar Menu.............................................................................34
Pages ...........................................................................................35
Basic Sonar Quick Reference...............................................38
Sonar Operations........................................................................39
Fish Symbols vs. Full Sonar Chart........................................41
Other Free Training Aids.......................................................42
Sec. 4: Sonar Options & Other Features ............................43
ASP (Advanced Signal Processing).........................................43
Alarms.........................................................................................44
Depth Alarms..........................................................................44
Zone Alarm..............................................................................45
Fish Alarm...............................................................................46
Brightness...................................................................................46
Calibrate Speed...........................................................................46
Chart Speed.................................................................................47
Contrast.......................................................................................48
