Furuno TZTL12F Installation Manual page 17

5. Dry the face of the transducer and the hull.
Coat the transducer face and mounting
location with marine sealant. Hardening
begins in approx. 15 to 20 minutes so do
this step without delay.
6. Attach the transducer to the hull.
Press the transducer firmly down on the
hull and gently twist it back and forth to
remove any air which may be trapped in
the marine sealant.
7. Support the transducer with a piece of
wood to keep it in place while the sealant is
drying. It takes 24 to 72 hours to harden
completely.
8. Turn the power on and change the menu
setting as shown below. See section 3.3
for how to use the menu.
1) Tap the [Home] icon to show the home
screen and display mode settings.
2) Drag the menu to show [Sounder] in the menu, then tap [Sounder].
3) Drag the [Sounder] menu to show the [SOUNDER INITIAL SETUP] menu.
4) At the [Transmission Power] menu item, set the transmission power to a level
of [10].
5) Adjust the Bottom Level and Gain Offset settings as shown in the table below.
Bottom Level HF
Bottom Level LF
Gain Offset HF
Gain Offset LF
Menu Item
Transducer
Hull
Setting
-40
-40
20
20
1. MOUNTING
Marine
sealant
Marine
sealant
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