Humminbird XNT 9 20 Installation Manual Download Page 6

6

532310-3_A

TRANSDUCER

 

Installation Guide

 

3.  If the bottom is visible on-screen with a digital readout for Depth, the unit is working properly. 

If the unit is working properly, gradually increase the boat speed to test high-speed 
performance. If the unit functions well at low speeds, but begins to skip or miss the bottom at 
higher speeds, the transducer requires adjustment.

4.  If you have the correct angle set on the transducer, yet lose a bottom reading at high speed, 

adjust the height and the running angle in small increments to give you the ideal transducer 
position for your boat. First, adjust the height in small increments. 

5. 

If you are still not getting good high speed readings, 

you may need to disassemble the 

transducer mounting assembly and re-position the ratchets.

If you do change the transducer position, 

re-trace the position of the mounting bracket 

before proceeding.

NOTE:

 It is often necessary to make several incremental transducer adjustments before optimum 

high speed performance is achieved. Due to the wide variety of boat hulls, however, it is not always 

possible to obtain high speed depth readings.

Finalize the Transducer Installation

Once you have reached a consistently good sonar signal at the desired speeds, you are ready to lock 
down the transducer settings. 

6.  Remove the transducer from the bracket (after noting where the ratchets are assembled), 

then re-align the mounting bracket against the transom of the boat to match the traced 
silhouette. Check the bracket position with the level again to make sure it is still level, then 
mark the third mounting hole using a pencil or marker. 

7.  Unscrew and remove the mounting screws and the transducer bracket and set aside.
8.  Drill the third mounting hole, using a 5/32" (4 mm) drill bit.

NOTE FOR FIBERGLASS HULLS: 

It is best to use progressively larger drill bits to reduce the chance 

of chipping or flaking the outer coating.

9.  Use a marine-grade silicone sealant to fill all three drilled mounting holes, especially if the 

holes penetrated the transom wall.

10. Re-position the transducer bracket against the transom of the boat, then hand-install  

all three screws. Make sure that the transducer location has not changed, then fully tighten 
all three mounting screws (see illustration 

Fully Tightening All Three Mounting Screws

).  

Hand-tighten only! 

11. Re-install the transducer to the mounting bracket, making sure to assemble the ratchets in 

the same location they had before. 
If you have performed the preceding procedures correctly, the transducer should be level and 
at the right height for optimal operation.

Setting Up an Accessory Transducer on the Control Head

The control head will automatically select the transducer that was included with your control head. 
If a compatible accessory transducer is connected, you will need to set the transducer type on the 
control head. When you select the transducer type, the related views and menus will be added to 
the system.

 

Δ

For additional configuration information, download the control head operations manual from 
our Web site at 

humminbird.com

.

Fully Tightening All Three 

Mounting Screws

(Hand-tighten only!)

Summary of Contents for XNT 9 20

Page 1: ...ad and understand your boat s warranty before starting this installation Visit our Web site at humminbird com for additional information and resources for transducer installations Also visit youtube c...

Page 2: ...level on the trailer both from port to starboard and from bow to stern 2 Hold the mounting bracket against the transom of the boat in the location you have selected Align the bracket horizontally usi...

Page 3: ...Put the pivot bolt through the assembly to hold it in position and loosely install the nut but do NOT tighten the nut at this time see Installing the Pivot Bolt CAUTION Do not use a high speed driver...

Page 4: ...ucer mounting bracket with a pencil or marker 5 Tighten the pivot bolt using the pivot screw and nut to lock the assembly Hand tighten only CAUTION Do not use a high speed driver on this combination o...

Page 5: ...le to the transducer port on the control head or cable connector if applicable The connector is keyed to prevent reversed installation and insertion should be easy Do not force the connectors into the...

Page 6: ...ced silhouette Check the bracket position with the level again to make sure it is still level then mark the third mounting hole using a pencil or marker 7 Unscrew and remove the mounting screws and th...

Page 7: ...citizen operating in compliance with known and applicable environmental regulations and a good neighbor in the communities where we make or sell our products WEEE DIRECTIVE EU Directive 2002 96 EC Was...

Page 8: ...de votre bateau avant de commencer cette installation Visitez notre site Web humminbird com pour plus d informations et de ressources sur les installations de transducteurs Visitez galement youtube co...

Page 9: ...gement et le d chargement du bateau 5 Sur les bateaux ayant une coque d crochement il est possible de monter le transducteur sur led crochement Nemontezpasletransducteursurletableauarri re derri reund...

Page 10: ...ux m canismes rochet une position num rot e sur l articulation du transducteur puis le monterez et ajusterez sa position sans le bloquer en place 1a Si le tableau arri re est un angle de 14 degr s un...

Page 11: ...du transducteur Inclinaison vers le bas Il existe une d clivit naturelle de 4 5 degr s du bord d attaque bord le plus pr s du tableau arri re du bateau au bord de fuite bord le plus loign du bateau d...

Page 12: ...l exc dent quelque part placez le c ble que vous aurez tir des deux directions de fa on ne former qu une seule boucle Doublez le c ble partir de ce point et enroulez le en spirale Le fait de ranger l...

Page 13: ...ueil S lectionnez une vue sonar Autre Consultez le guide d utilisation de votre t te de commande 3 Si le fond et un indicateur num rique de la profondeur sont visibles l cran c est que l appareil fonc...

Page 14: ...ch it base de silicone de qualit marine surtout si les trous traversent le tableau arri re 10 Replacez le support du transducteur sur le tableau arri re du bateau puis serrez les vis de montage la mai...

Page 15: ...es et applicables et la politique de bon voisinage des communaut s o elle fabrique et vend ses produits DIRECTIVE DEEE La directive EU 2002 96 CE sur les d chets d quipements lectriques et lectronique...

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