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
