Humminbird 998c SI - Manual (Page 3)

Table of Contents
ii
Introduction 1
How Sonar Works ....................................................................................................................1
High Definition Side Imaging® Sonar (898c SI and 998c SI only) ............................................2
DualBeam PLUS™ Sonar (858c, 898c SI, 958c, 998c SI) ..........................................................3
QuadraBeam PLUS™ Sonar (optional-purchase QuadraBeam PLUS™ transducer only) ..........3
Universal Sonar 2......................................................................................................................4
How GPS and Cartography Work ............................................................................................4
Fishing System Configuration ..................................................................................................5
Accessory Bus ..........................................................................................................................5
Video-Out and RS 232 Connectors ..........................................................................................6
Installation Overview 6
Control Head Installation 6
Gimbal Mounting the Control Head........................................................................................7
Connecting the Control Head Power Cable to the Boat......................................................11
Transducer Installation Overview 12
858c & 958c Transom Mount Transducer Installation
DualBeam PLUS™ Transducer, XNT 9 20 T (858c and 958c only) 13
Overview..................................................................................................................................13
Locating the transducer mounting location..........................................................................14
Preparing the Mounting Location ........................................................................................15
Assembling the Transducer and Initial Mounting................................................................16
Routing the Cable ..................................................................................................................20
Test and Finish the Installation..............................................................................................21
Locking Down the Transducer (Optional)..............................................................................23
858c & 958c Inside the Hull Transducer Installation
DualBeam PLUS™ Transducer, XNT 9 20 T (858c and 958c only) 24
Locating the transducer mounting location ........................................................................24
Trial installation ......................................................................................................................25
Routing the cable....................................................................................................................26
Permanently mounting the transducer ................................................................................26
898c SI & 998c SI Transom Mount Transducer Installation
Side Imaging Transducer, XHS 9 HDSI 180T (898c SI or 998c SI only) 27
Overview..................................................................................................................................28
Locating transducer mounting location ................................................................................28
Mounting the transducer bracket to the boat......................................................................29
Attaching the pivot to the transducer ..................................................................................30
Mounting the transducer pivot assembly to the bracket ....................................................30
Adjusting the running position of the transducer................................................................31
Routing the cable....................................................................................................................32
Testing the installation ..........................................................................................................33
Trolling Motor Transducer Installation 33
Trolling Motor Transducer Options ........................................................................................33
Test and Finish the Transducer Installation ..........................................................................33
GPS Receiver Installation Overview 34
Stem Mounting with an Existing 1" - 14 Thread Stem........................................................35
Access Under Mounting Location ........................................................................................36
No Access Under Mounting Location ..................................................................................36
Finish Routing the Cable and Check GPS Receiver Operation............................................37
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