Uniden Clock User Manual

Digital Depth Sounder

OPERATING GUIDE

Contents

Unpacking ...............................2

Features ................................2

Installing the QT 206..........................3

Transducer Wiring...........................4

Power Cable Wiring ..........................4

Installing The Transducer.......................5

Transom Mount Transducers .....................5

Through-the-hull Transducers ....................8

Low Profile Transducers .......................9

Stem-type (power Boat Bronze) Transducers............10

Inside-the-hull Transducers .....................12

Understanding Sonar ........................14

Air Echoes ..............................14

Setting The Shallow Water Alarm ..................15

Shallow Water Sensitivity ......................16

When to Use Less Sensitivity ....................17

When to Use More Sensitivity....................18

Troubleshooting Guideline .....................19

Features, Specifications, and availability of Optional Accessories are all
subject to change without notice.

1

UNPACKING

Your QT-206 Depth Sounder box should contain the following items:

• Transducer with 3 lugs attached

• Power Cable (attached to the gauge)

• Mounting Bracket and hardware

• This Operating Guide

If any items are missing or damaged, please contact your dealer
immediately.

FEATURES

Depth Readings – The QT-206 is designed to give depth readings

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from 2.5 feet to a maximum depth of 199 feet. Depth readings are in
1/10 foot increments from 2.0 feet to 15 feet, and are shown as whole
numbers up to 199 feet. These readings are displayed on a large
Liquid Crystal Display (LCD).

Night Viewing – The QT-206 is back lit at all times with a soft

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glowing lamp designed to help your night time navigational needs.

2

INSTALLING THE QT-206

1. Find a location on your dash panel which will provide clear viewing
and access to the LCD window.

2. After finding the right location for the indicator unit, mark a 2-inch
hole to be cut out.

3. Check behind the panel for any cables or wiring which could be
damaged. Then cut out the 2-inch hole.

4. Test fit the unit in the hole, and make any adjustments with your
saw or drill.

5. Extending out of the back of the instrument is a brass shaft. Attach
the U-shaped mounting bracket over this shaft, and place the
washer on the shaft. Thread the nut onto the shaft until the
U-shaped bracket is firmly against the back of the dash panel.

6. Look at the front of the instrument to ensure that it is aligned
properly. Then tighten securely.

2 3/8"

1/2"

2"

2 1/2"

MOUNTING BRACKET

P/N: 950-025

BRASS STUD

P/N: 210-005

NUT
P/N: 3203-009

WASHER

P/N: 308-029

3

X-ducer

Red Black

Shield

Alarm

More

Power

Shallow

Sensitivity

+

Less

TRANSDUCER WIRING

On the rear of the unit, locate the terminal lugs extending out of the rear
of the instrument. These terminals are used to connect the transducer
wires.

When shipped from the factory, the transducer is wired with 3 female
lugs attached. These lugs need to be inserted onto the male terminals
located on the rear of the gauge.

The BLACK terminal is connected to the BLACK wire. The WHITE
terminal may be connected to either the RED, BLUE, or WHITE wire.
Connect the shield to the position marked “SHIELD”.

BLACK

SHIELD

RED, BLUE, OR WHITE

If you need these female lugs, contact your Uniden Marine dealer.

POWER CABLE WIRING

Because the QT-206 has no ON/OFF switch, you will need to wire it
directly to a power source which will turn the unit on as power is applied.
It may be convenient to wire the power cable directly to the Ignition
Switch so that when you turn the boat on, the depth sounder immediately
starts working. Some boats have already been prewired and labeled for
a depth sounder so that when the switch is turned ON, the depth
sounder receives power.

Another method for cable wiring is as follows:

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1. Connect the main unit to a 12-volt battery using the power cable
supplied with your unit. You may extend this cable as necessary,
but you must observe proper polarity (i.e., RED is positive and
BLACK is negative).

2.

Connect the BLACK wire to the negative (-) battery terminal.

3.

Connect the RED wire to the positive (+) battery terminal.

4. Make sure the connections are clean and tight so they do not
vibrate loose during the boat’s operation. Occasionally clean any
accumulated corrosion from the battery terminals.

5. If for some reason the fuse is blown, replace with a 1 amp fuse,
normal blow.

DO NOT OVER FUSE! The unit consumes 0.25 amps of current when it
is on. You will want to keep your battery fully charged.

INSTALLING THE TRANSDUCER

The three most popular transducer styles are:

• TRANSOM MOUNT – Ideal on boats with outboard engines, or on

I/O driven boats.

• THROUGH-THE-HULL – Ideal for boats with Inboard engine(s).

• INSIDE-THE-HULL – Often called “Shoot Through Transducer”; it

can be used effectively if installation procedures are followed
carefully.

TRANSOM MOUNT TRANSDUCERS
Selecting An Installation Location

Mount the transducer fairly close to the centerline (keel) of the boat,
which will ensure minimum potential aeration over the acoustic window
of the transducer.
between the drives.

On single drive installations

the side of the boat where the propeller blade is rotating downwards.
This is usually the right (starboard) side. If possible, do not mount the

On twin drive installations

, you should mount the transducer bracket on

5

, install the transducer

transducer directly behind any strakes, ribs, intakes and outlets for live
wells and/or engine cooling water, or any protrusion which may cause
turbulence or cavitation. On slower, heavier displacement boats, good
results can be achieved further from the keel.

FIBERGLASS V-HULL BOATS—TWIN ENGINE

(MODERATE TO DEEP-VEE DEADRISE ANGLE)

FIBERGLASS V-HULL MODERATE TO
LARGE DEADRISE

TRANSDUCER IS BELOW
STRAIGHT LINE
EXTENSION OF HULL.

HULL

DO NOT INSTALL YOUR TRANSDUCER UNDERNEATH A GASOLINE
OVERFLOW. THIS WILL DESTROY THE PLASTIC MATERIAL OF
THE TRANSDUCER AND THE BRACKET. THIS DAMAGE IS NOT

®

COVERED UNDER WARRANTY. Also, do not use LOCKTITE

or any
other solvents on the mounting hardware or transducer. These materials
may destroy the transducer.

Mounting The Transducer

The transducer and bracket assembly should be oriented vertically with
respect to the water to yield a vertically-directed acoustic beam.

1. Attach the transducer to the bracket as shown below.

2. Place transducer and bracket at the selected location on the boat

transom. Align the bracket so that the bottom surface of the
transducer is even with the underside of the boat.

FIBERGLASS V-HULL BOATS—TWIN ENGINE

(MODERATE TO DEEP-VEE DEADRISE ANGLE)

INSTALL BETWEEN DRIVES—MODERA TE TO

HULL

WEDGE POINTING FORWARD

(Install between drives)

DEEP-VEE DEADRISE ANGLE

DEADRISE ANGLE

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